Elecraft

K3S poor CW keying further investigation

Classic

List

Threaded

32 messages Options

Jim Brown-10

Re: K3S poor CW keying further investigation

On 4/25/2020 5:13 AM, Chuck Chandler wrote:
> At rest
> the K3S panel display shows 13.6V, with full power key down it dips to 11.5
> or so. This seems like a lot. I'm running the power cable thru a
> RigRunner Powerpole strip. If I can dig out another power supply from the
> packed boxes I can wire the K3S directly to the supply.

The power strip and the cable length combine to cause the high drop. The
rig should always be powered directly from the power supply, and with
the shortest practical cable. There are several vendors who sell
PowerPole connector parts. All that's needed to install them are a
soldering iron, diagonal cutters, and decent needlenose pliers. It's not
too difficult to make a Y-cable so that you can feed a single PSU to
both the radio and the power strip.

73, Jim K9YC

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

N4ZR

Re: K3S poor CW keying further investigation

In reply to this post by Martin Sole-3

Thanks, Martin - I take it all back - my radio drops the voltage down to
11.0 volts at 100 watts key down. I'm really surprised, because I
figured that the breakers in the 4005i wouldn't have so much drop.I'll
have to figure out how best to siamese my power supply output so that it
goes both to the RigRunner and directly to the radio. That'll leave the
power supply's fusing as the only protection for the radio, but I guess
that's OK.

73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

On 4/25/2020 12:24 PM, Martin Sole wrote:

> DISP and rotate vfo B for desired measurement option.
>
> Martin, HS0ZED
>
>
>
> On 25/04/2020 23:19, N4ZR wrote:
>> That's right - my focus was (perhaps too narrowly) on the behavior of
>> the power supply under load, not on losses in the system. Now if
>> someone can just tell me how to read the voltage at the transceiver -
>> I know there's a menu setting somewhere but my radio is fairly early
>> and the manual doesn't say.
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network
>> at <http://reversebeacon.net>, now
>> spotting RTTY activity worldwide.
>> For spots, please use your favorite
>> "retail" DX cluster.
>>
>> On 4/25/2020 11:25 AM, hawley, charles j jr wrote:
>>> I did notice that the post mentioned that his power supply dipped in
>>> voltage but as for preventing issues due to low voltage, it's not
>>> your voltmeter on the power supply that is the proper indicator. It
>>> is the voltage on the input to the K3 that you should be noting.
>>> It's available on the menu and displays in the VFO B area on the
>>> screen.
>>>
>>> Jack BMW Motorcycles
>>> Chuck KE9UW
>>> [hidden email]
>>>
>>> Sent from my iPad
>>>
>>>> On Apr 25, 2020, at 9:51 AM, N4ZR <[hidden email]> wrote:
>>>>
>>>> For whatever it may be worth, my K3 is run through a West Mountain
>>>> RigRunner 4005i, and the voltmeter on my SEC 1235M doesn't even
>>>> flicker when I go key-down at 100 watts.
>>>>
>>>> I'm wondering if a 25-amp-rated supply (perhaps a little
>>>> optimistic) might be to blame. My K3 draws 20.2 amps at 100 watts
>>>> key down.
>>>>
>>>> 73, Pete N4ZR
>>>> Check out the Reverse Beacon Network
>>>> at <http://reversebeacon.net>, now
>>>> spotting RTTY activity worldwide.
>>>> For spots, please use your favorite
>>>> "retail" DX cluster.
>>>>
>>>>> On 4/25/2020 10:32 AM, Jim Rhodes wrote:
>>>>> I had been using a power pole strip to power everything. After
>>>>> seeing some
>>>>> discussion on this topic some time ago I found that in the string
>>>>> of 3
>>>>> power pole connections in my setup at the time I was seeing around
>>>>> a 1 volt
>>>>> drop in the voltage on the K3 metering between receive and 100 watts
>>>>> keydown. That voltage drop was confirmed by my VOM so I wired the rig
>>>>> directly to the supply and the voltage drop was less than 0.25
>>>>> volts. That
>>>>> is the way my rigs and VHF/UHF amps will be connected from now on
>>>>> with only
>>>>> a fuse inline. The low current stuff will stay on the power pole
>>>>> strip
>>>>> where they do just fine lighting up lights and stuff.
>>>>>
>>>>>> On Sat, Apr 25, 2020, 09:16 Don Schroder
>>>>>> <[hidden email]> wrote:
>>>>>>
>>>>>> Bob,
>>>>>>
>>>>>> Is it safe to run my K2 using Anderson Power Pole connections,
>>>>>> and/or
>>>>>> RigRunner equipment?
>>>>>>
>>>>>> For my info, what is the reason for NOT using them?
>>>>>>
>>>>>> I’m rewiring, and I want to do it right!
>>>>>>
>>>>>> Gunny, KE0PVQ
>>>>>>
>>>>>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for
>>>>>> Windows 10
>>>>>>
>>>>>> From: Gmail<mailto:[hidden email]>
>>>>>> Sent: Saturday, April 25, 2020 9:03 AM
>>>>>> To: Bob McGraw K4TAX<mailto:[hidden email]>
>>>>>> Cc: [hidden email]<mailto:[hidden email]>
>>>>>> Subject: Re: [Elecraft] K3S poor CW keying further investigation
>>>>>>
>>>>>> Nuts, just measure the drop between radio and power supply see if
>>>>>> it is
>>>>>> reasonable. Mine is 0.25 volts when transmitting. I run 14.0 out
>>>>>> of supply.
>>>>>> Ray
>>>>>> W8LYJ
>>>>>>
>>>>>> Sent from my iPad
>>>>>>
>>>>>>> On Apr 25, 2020, at 07:48, Bob McGraw K4TAX
>>>>>>> <[hidden email]> wrote:
>>>>>>>
>>>>>>> As to the RigRunner power pole strip.........PUT IT IN THE
>>>>>>> TRASH where
>>>>>> it belongs.    NEVER NEVER NEVER use a power distribution strip
>>>>>> to power a
>>>>>> 100 watt radio.   ALWAYS connect the radio direct to the power
>>>>>> supply
>>>>>> terminals.   NO exceptions!
>>>>>>> 73
>>>>>>>
>>>>>>> Bob, K4TAX
>>>>>>>
>>>>>>>
>>>>>>>> On 4/25/2020 7:13 AM, Chuck Chandler wrote:
>>>>>>>> After more checking, I suspect the internal 100W amp is the common
>>>>>> factor
>>>>>>>> in the poor keying characteristics I'm seeing and hearing about
>>>>>>>> from my
>>>>>>>> rig. I am trying to determine if my power supply is doing it's
>>>>>>>> job.
>>>>>>>>
>>>>>>>> I'm using a TenTec 963 switching supply rated at 25A
>>>>>>>> continuous. At
>>>>>> rest
>>>>>>>> the K3S panel display shows 13.6V, with full power key down it
>>>>>>>> dips to
>>>>>> 11.5
>>>>>>>> or so. This seems like a lot. I'm running the power cable thru a
>>>>>>>> RigRunner Powerpole strip. If I can dig out another power
>>>>>>>> supply from
>>>>>> the
>>>>>>>> packed boxes I can wire the K3S directly to the supply.
>>>>>>>>
>>>>>>>> Is 11.5V at key down enough to cause the slow rise time being
>>>>>>>> reported?
>>>>>>>>
>>>>>>>> 73 de Chuck, WS1L
>>>>>>>>
>>>>>>> ______________________________________________________________
>>>>>>> Elecraft mailing list
>>>>>>> Home:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>
>>>>>>> Help:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>
>>>>>>> Post: mailto:[hidden email]
>>>>>>>
>>>>>>> This list hosted by:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>
>>>>>>> Please help support this email list:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>
>>>>>>> Message delivered to [hidden email]
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>
>>>>>> Help:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>
>>>>>> Please help support this email list:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>
>>>>>> Message delivered to [hidden email]
>>>>>>
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by: http://www.qsl.net
>>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>>> Message delivered to [hidden email]
>>>>> ______________________________________________________________
>>>>> Elecraft mailing list
>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>> Post: mailto:[hidden email]
>>>>>
>>>>> This list hosted by: http://www.qsl.net
>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>> Message delivered to [hidden email]
>>>> ______________________________________________________________
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:[hidden email]
>>>>
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>> Message delivered to [hidden email]
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

donovanf

Re: K3S poor CW keying further investigation

Hi Pete,

The K3 100 watt power amplifier includes a 25 amp circuit breaker
on the rear panel of your radio. The rest of the K3 electronics is
protected by an internal 5 amp self resetting fuse.

There's absolutely no need for external fuses, except in a mobile installation
where external fuses are required in both the positive and negative power
leads to avoid a possibly disastrous automotive fire.

73
Frank
W3LPL

----- Original Message -----

From: "N4ZR" <[hidden email]>
To: "Martin Sole" <[hidden email]>, [hidden email]
Sent: Saturday, April 25, 2020 4:54:37 PM
Subject: Re: [Elecraft] K3S poor CW keying further investigation

Thanks, Martin - I take it all back - my radio drops the voltage down to
11.0 volts at 100 watts key down. I'm really surprised, because I
figured that the breakers in the 4005i wouldn't have so much drop.I'll
have to figure out how best to siamese my power supply output so that it
goes both to the RigRunner and directly to the radio. That'll leave the
power supply's fusing as the only protection for the radio, but I guess
that's OK.

73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

On 4/25/2020 12:24 PM, Martin Sole wrote:

> DISP and rotate vfo B for desired measurement option.
>
> Martin, HS0ZED
>
>
>
> On 25/04/2020 23:19, N4ZR wrote:
>> That's right - my focus was (perhaps too narrowly) on the behavior of
>> the power supply under load, not on losses in the system. Now if
>> someone can just tell me how to read the voltage at the transceiver -
>> I know there's a menu setting somewhere but my radio is fairly early
>> and the manual doesn't say.
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network
>> at <http://reversebeacon.net>, now
>> spotting RTTY activity worldwide.
>> For spots, please use your favorite
>> "retail" DX cluster.
>>
>> On 4/25/2020 11:25 AM, hawley, charles j jr wrote:
>>> I did notice that the post mentioned that his power supply dipped in
>>> voltage but as for preventing issues due to low voltage, it's not
>>> your voltmeter on the power supply that is the proper indicator. It
>>> is the voltage on the input to the K3 that you should be noting.
>>> It's available on the menu and displays in the VFO B area on the
>>> screen.
>>>
>>> Jack BMW Motorcycles
>>> Chuck KE9UW
>>> [hidden email]
>>>
>>> Sent from my iPad
>>>
>>>> On Apr 25, 2020, at 9:51 AM, N4ZR <[hidden email]> wrote:
>>>>
>>>> For whatever it may be worth, my K3 is run through a West Mountain
>>>> RigRunner 4005i, and the voltmeter on my SEC 1235M doesn't even
>>>> flicker when I go key-down at 100 watts.
>>>>
>>>> I'm wondering if a 25-amp-rated supply (perhaps a little
>>>> optimistic) might be to blame. My K3 draws 20.2 amps at 100 watts
>>>> key down.
>>>>
>>>> 73, Pete N4ZR
>>>> Check out the Reverse Beacon Network
>>>> at <http://reversebeacon.net>, now
>>>> spotting RTTY activity worldwide.
>>>> For spots, please use your favorite
>>>> "retail" DX cluster.
>>>>
>>>>> On 4/25/2020 10:32 AM, Jim Rhodes wrote:
>>>>> I had been using a power pole strip to power everything. After
>>>>> seeing some
>>>>> discussion on this topic some time ago I found that in the string
>>>>> of 3
>>>>> power pole connections in my setup at the time I was seeing around
>>>>> a 1 volt
>>>>> drop in the voltage on the K3 metering between receive and 100 watts
>>>>> keydown. That voltage drop was confirmed by my VOM so I wired the rig
>>>>> directly to the supply and the voltage drop was less than 0.25
>>>>> volts. That
>>>>> is the way my rigs and VHF/UHF amps will be connected from now on
>>>>> with only
>>>>> a fuse inline. The low current stuff will stay on the power pole
>>>>> strip
>>>>> where they do just fine lighting up lights and stuff.
>>>>>
>>>>>> On Sat, Apr 25, 2020, 09:16 Don Schroder
>>>>>> <[hidden email]> wrote:
>>>>>>
>>>>>> Bob,
>>>>>>
>>>>>> Is it safe to run my K2 using Anderson Power Pole connections,
>>>>>> and/or
>>>>>> RigRunner equipment?
>>>>>>
>>>>>> For my info, what is the reason for NOT using them?
>>>>>>
>>>>>> I’m rewiring, and I want to do it right!
>>>>>>
>>>>>> Gunny, KE0PVQ
>>>>>>
>>>>>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for
>>>>>> Windows 10
>>>>>>
>>>>>> From: Gmail<mailto:[hidden email]>
>>>>>> Sent: Saturday, April 25, 2020 9:03 AM
>>>>>> To: Bob McGraw K4TAX<mailto:[hidden email]>
>>>>>> Cc: [hidden email]<mailto:[hidden email]>
>>>>>> Subject: Re: [Elecraft] K3S poor CW keying further investigation
>>>>>>
>>>>>> Nuts, just measure the drop between radio and power supply see if
>>>>>> it is
>>>>>> reasonable. Mine is 0.25 volts when transmitting. I run 14.0 out
>>>>>> of supply.
>>>>>> Ray
>>>>>> W8LYJ
>>>>>>
>>>>>> Sent from my iPad
>>>>>>
>>>>>>> On Apr 25, 2020, at 07:48, Bob McGraw K4TAX
>>>>>>> <[hidden email]> wrote:
>>>>>>>
>>>>>>> As to the RigRunner power pole strip.........PUT IT IN THE
>>>>>>> TRASH where
>>>>>> it belongs. NEVER NEVER NEVER use a power distribution strip
>>>>>> to power a
>>>>>> 100 watt radio. ALWAYS connect the radio direct to the power
>>>>>> supply
>>>>>> terminals. NO exceptions!
>>>>>>> 73
>>>>>>>
>>>>>>> Bob, K4TAX
>>>>>>>
>>>>>>>
>>>>>>>> On 4/25/2020 7:13 AM, Chuck Chandler wrote:
>>>>>>>> After more checking, I suspect the internal 100W amp is the common
>>>>>> factor
>>>>>>>> in the poor keying characteristics I'm seeing and hearing about
>>>>>>>> from my
>>>>>>>> rig. I am trying to determine if my power supply is doing it's
>>>>>>>> job.
>>>>>>>>
>>>>>>>> I'm using a TenTec 963 switching supply rated at 25A
>>>>>>>> continuous. At
>>>>>> rest
>>>>>>>> the K3S panel display shows 13.6V, with full power key down it
>>>>>>>> dips to
>>>>>> 11.5
>>>>>>>> or so. This seems like a lot. I'm running the power cable thru a
>>>>>>>> RigRunner Powerpole strip. If I can dig out another power
>>>>>>>> supply from
>>>>>> the
>>>>>>>> packed boxes I can wire the K3S directly to the supply.
>>>>>>>>
>>>>>>>> Is 11.5V at key down enough to cause the slow rise time being
>>>>>>>> reported?
>>>>>>>>
>>>>>>>> 73 de Chuck, WS1L
>>>>>>>>
>>>>>>> ______________________________________________________________
>>>>>>> Elecraft mailing list
>>>>>>> Home:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>
>>>>>>> Help:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>
>>>>>>> Post: mailto:[hidden email]
>>>>>>>
>>>>>>> This list hosted by:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>
>>>>>>> Please help support this email list:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>
>>>>>>> Message delivered to [hidden email]
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>
>>>>>> Help:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>
>>>>>> Please help support this email list:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>
>>>>>> Message delivered to [hidden email]
>>>>>>
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by: http://www.qsl.net
>>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>>> Message delivered to [hidden email]
>>>>> ______________________________________________________________
>>>>> Elecraft mailing list
>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>> Post: mailto:[hidden email]
>>>>>
>>>>> This list hosted by: http://www.qsl.net
>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>> Message delivered to [hidden email]
>>>> ______________________________________________________________
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:[hidden email]
>>>>
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>> Message delivered to [hidden email]
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Pete Lascell-2

Re: K3S poor CW keying further investigation

To bad the power supply doesn't have remote voltage sense to regulate at the far end of the 12 volt power cable.
Pete W4WWQ

----- Original Message -----
From: <[hidden email]>
To: <[hidden email]>
Sent: 4/25/2020 2:47:12 PM
Subject: Re: [Elecraft] K3S poor CW keying further investigation
________________________________________________________________________________

Hi Pete,

The K3 100 watt power amplifier includes a 25 amp circuit breaker
on the rear panel of your radio. The rest of the K3 electronics is
protected by an internal 5 amp self resetting fuse.

There's absolutely no need for external fuses, except in a mobile installation
where external fuses are required in both the positive and negative power
leads to avoid a possibly disastrous automotive fire.

73
Frank
W3LPL

----- Original Message -----

From: "N4ZR" <[hidden email]>
To: "Martin Sole" <[hidden email]>, [hidden email]
Sent: Saturday, April 25, 2020 4:54:37 PM
Subject: Re: [Elecraft] K3S poor CW keying further investigation

Thanks, Martin - I take it all back - my radio drops the voltage down to
11.0 volts at 100 watts key down. I'm really surprised, because I
figured that the breakers in the 4005i wouldn't have so much drop.I'll
have to figure out how best to siamese my power supply output so that it
goes both to the RigRunner and directly to the radio. That'll leave the
power supply's fusing as the only protection for the radio, but I guess
that's OK.

73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

On 4/25/2020 12:24 PM, Martin Sole wrote:

> DISP and rotate vfo B for desired measurement option.
>
> Martin, HS0ZED
>
>
>
> On 25/04/2020 23:19, N4ZR wrote:
>> That's right - my focus was (perhaps too narrowly) on the behavior of
>> the power supply under load, not on losses in the system. Now if
>> someone can just tell me how to read the voltage at the transceiver -
>> I know there's a menu setting somewhere but my radio is fairly early
>> and the manual doesn't say.
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network
>> at <http://reversebeacon.net>, now
>> spotting RTTY activity worldwide.
>> For spots, please use your favorite
>> "retail" DX cluster.
>>
>> On 4/25/2020 11:25 AM, hawley, charles j jr wrote:
>>> I did notice that the post mentioned that his power supply dipped in
>>> voltage but as for preventing issues due to low voltage, it's not
>>> your voltmeter on the power supply that is the proper indicator. It
>>> is the voltage on the input to the K3 that you should be noting.
>>> It's available on the menu and displays in the VFO B area on the
>>> screen.
>>>
>>> Jack BMW Motorcycles
>>> Chuck KE9UW
>>> [hidden email]
>>>
>>> Sent from my iPad
>>>
>>>> On Apr 25, 2020, at 9:51 AM, N4ZR <[hidden email]> wrote:
>>>>
>>>> For whatever it may be worth, my K3 is run through a West Mountain
>>>> RigRunner 4005i, and the voltmeter on my SEC 1235M doesn't even
>>>> flicker when I go key-down at 100 watts.
>>>>
>>>> I'm wondering if a 25-amp-rated supply (perhaps a little
>>>> optimistic) might be to blame. My K3 draws 20.2 amps at 100 watts
>>>> key down.
>>>>
>>>> 73, Pete N4ZR
>>>> Check out the Reverse Beacon Network
>>>> at <http://reversebeacon.net>, now
>>>> spotting RTTY activity worldwide.
>>>> For spots, please use your favorite
>>>> "retail" DX cluster.
>>>>
>>>>> On 4/25/2020 10:32 AM, Jim Rhodes wrote:
>>>>> I had been using a power pole strip to power everything. After
>>>>> seeing some
>>>>> discussion on this topic some time ago I found that in the string
>>>>> of 3
>>>>> power pole connections in my setup at the time I was seeing around
>>>>> a 1 volt
>>>>> drop in the voltage on the K3 metering between receive and 100 watts
>>>>> keydown. That voltage drop was confirmed by my VOM so I wired the rig
>>>>> directly to the supply and the voltage drop was less than 0.25
>>>>> volts. That
>>>>> is the way my rigs and VHF/UHF amps will be connected from now on
>>>>> with only
>>>>> a fuse inline. The low current stuff will stay on the power pole
>>>>> strip
>>>>> where they do just fine lighting up lights and stuff.
>>>>>
>>>>>> On Sat, Apr 25, 2020, 09:16 Don Schroder
>>>>>> <[hidden email]> wrote:
>>>>>>
>>>>>> Bob,
>>>>>>
>>>>>> Is it safe to run my K2 using Anderson Power Pole connections,
>>>>>> and/or
>>>>>> RigRunner equipment?
>>>>>>
>>>>>> For my info, what is the reason for NOT using them?
>>>>>>
>>>>>> I’m rewiring, and I want to do it right!
>>>>>>
>>>>>> Gunny, KE0PVQ
>>>>>>
>>>>>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for
>>>>>> Windows 10
>>>>>>
>>>>>> From: Gmail<mailto:[hidden email]>
>>>>>> Sent: Saturday, April 25, 2020 9:03 AM
>>>>>> To: Bob McGraw K4TAX<mailto:[hidden email]>
>>>>>> Cc: [hidden email]<mailto:[hidden email]>
>>>>>> Subject: Re: [Elecraft] K3S poor CW keying further investigation
>>>>>>
>>>>>> Nuts, just measure the drop between radio and power supply see if
>>>>>> it is
>>>>>> reasonable. Mine is 0.25 volts when transmitting. I run 14.0 out
>>>>>> of supply.
>>>>>> Ray
>>>>>> W8LYJ
>>>>>>
>>>>>> Sent from my iPad
>>>>>>
>>>>>>> On Apr 25, 2020, at 07:48, Bob McGraw K4TAX
>>>>>>> <[hidden email]> wrote:
>>>>>>>
>>>>>>> As to the RigRunner power pole strip.........PUT IT IN THE
>>>>>>> TRASH where
>>>>>> it belongs. NEVER NEVER NEVER use a power distribution strip
>>>>>> to power a
>>>>>> 100 watt radio. ALWAYS connect the radio direct to the power
>>>>>> supply
>>>>>> terminals. NO exceptions!
>>>>>>> 73
>>>>>>>
>>>>>>> Bob, K4TAX
>>>>>>>
>>>>>>>
>>>>>>>> On 4/25/2020 7:13 AM, Chuck Chandler wrote:
>>>>>>>> After more checking, I suspect the internal 100W amp is the common
>>>>>> factor
>>>>>>>> in the poor keying characteristics I'm seeing and hearing about
>>>>>>>> from my
>>>>>>>> rig. I am trying to determine if my power supply is doing it's
>>>>>>>> job.
>>>>>>>>
>>>>>>>> I'm using a TenTec 963 switching supply rated at 25A
>>>>>>>> continuous. At
>>>>>> rest
>>>>>>>> the K3S panel display shows 13.6V, with full power key down it
>>>>>>>> dips to
>>>>>> 11.5
>>>>>>>> or so. This seems like a lot. I'm running the power cable thru a
>>>>>>>> RigRunner Powerpole strip. If I can dig out another power
>>>>>>>> supply from
>>>>>> the
>>>>>>>> packed boxes I can wire the K3S directly to the supply.
>>>>>>>>
>>>>>>>> Is 11.5V at key down enough to cause the slow rise time being
>>>>>>>> reported?
>>>>>>>>
>>>>>>>> 73 de Chuck, WS1L
>>>>>>>>
>>>>>>> ______________________________________________________________
>>>>>>> Elecraft mailing list
>>>>>>> Home:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>
>>>>>>> Help:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>
>>>>>>> Post: mailto:[hidden email]
>>>>>>>
>>>>>>> This list hosted by:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>
>>>>>>> Please help support this email list:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>
>>>>>>> Message delivered to [hidden email]
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>
>>>>>> Help:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>
>>>>>> Please help support this email list:
>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>
>>>>>> Message delivered to [hidden email]
>>>>>>
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by: http://www.qsl.net
>>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>>> Message delivered to [hidden email]
>>>>> ______________________________________________________________
>>>>> Elecraft mailing list
>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>> Post: mailto:[hidden email]
>>>>>
>>>>> This list hosted by: http://www.qsl.net
>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>> Message delivered to [hidden email]
>>>> ______________________________________________________________
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:[hidden email]
>>>>
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>> Message delivered to [hidden email]
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

Edward R Cole

Re: K3S poor CW keying further investigation

In reply to this post by Chuck Chandler

Just an observation regarding Don's comment:

Last week I decided to do my radio shack reorganization (complete
relocation of things) and one result is the main 12v line from my
station Astron 50M PS, which is welding wire (no.6 awg?), to my main
distribution strip was shortened from about 16 to 6-feet. Resulting
with 110w output on 2m FM vs 90w previous (guessing due to better
voltage and/or lower coax loss).

One of the reasons for rearranging the station was to shorten
cabling. E.g. I eliminated a 20-foot runs of LMR-600 from both my 6m
1000w PA & 2m 1500w PA. 240vac line is about 12-foot longer to my
50v PS for the amps. I don't expect to see much voltage sag with a
load of 12A. I only saw 1-volt sag in the original location.

Many of my 12v equipment power lines will also be shortened. win-win!

73, Ed - KL7UW
630m to 3cm

Date: Sat, 25 Apr 2020 11:42:35 -0400
From: Don Wilhelm <[hidden email]>
To: Ron Manfredi <[hidden email]>, [hidden email]
Subject: Re: [Elecraft] K3S poor CW keying further investigation
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Solder each power supply lead to a short length of #10 wire. Insulate
the connection well.

73,
Don W3FPR

73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
[hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

ke9uw

Re: K3S poor CW keying further investigation

In reply to this post by N4ZR

I bought another one of those Samsung supplies just for the K3S.

Jack BMW Motorcycles
Chuck KE9UW
[hidden email]

Sent from my iPad

> On Apr 25, 2020, at 11:55 AM, N4ZR <[hidden email]> wrote:
>
> Thanks, Martin - I take it all back - my radio drops the voltage down to 11.0 volts at 100 watts key down. I'm really surprised, because I figured that the breakers in the 4005i wouldn't have so much drop.I'll have to figure out how best to siamese my power supply output so that it goes both to the RigRunner and directly to the radio. That'll leave the power supply's fusing as the only protection for the radio, but I guess that's OK.
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at <http://reversebeacon.net>, now
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
>
>> On 4/25/2020 12:24 PM, Martin Sole wrote:
>> DISP and rotate vfo B for desired measurement option.
>>
>> Martin, HS0ZED
>>
>>
>>
>>> On 25/04/2020 23:19, N4ZR wrote:
>>> That's right - my focus was (perhaps too narrowly) on the behavior of the power supply under load, not on losses in the system. Now if someone can just tell me how to read the voltage at the transceiver - I know there's a menu setting somewhere but my radio is fairly early and the manual doesn't say.
>>>
>>> 73, Pete N4ZR
>>> Check out the Reverse Beacon Network
>>> at <http://reversebeacon.net>, now
>>> spotting RTTY activity worldwide.
>>> For spots, please use your favorite
>>> "retail" DX cluster.
>>>
>>> On 4/25/2020 11:25 AM, hawley, charles j jr wrote:
>>>> I did notice that the post mentioned that his power supply dipped in voltage but as for preventing issues due to low voltage, it's not your voltmeter on the power supply that is the proper indicator. It is the voltage on the input to the K3 that you should be noting. It's available on the menu and displays in the VFO B area on the screen.
>>>>
>>>> Jack BMW Motorcycles
>>>> Chuck KE9UW
>>>> [hidden email]
>>>>
>>>> Sent from my iPad
>>>>
>>>>> On Apr 25, 2020, at 9:51 AM, N4ZR <[hidden email]> wrote:
>>>>>
>>>>> For whatever it may be worth, my K3 is run through a West Mountain RigRunner 4005i, and the voltmeter on my SEC 1235M doesn't even flicker when I go key-down at 100 watts.
>>>>>
>>>>> I'm wondering if a 25-amp-rated supply (perhaps a little optimistic) might be to blame. My K3 draws 20.2 amps at 100 watts key down.
>>>>>
>>>>> 73, Pete N4ZR
>>>>> Check out the Reverse Beacon Network
>>>>> at <http://reversebeacon.net>, now
>>>>> spotting RTTY activity worldwide.
>>>>> For spots, please use your favorite
>>>>> "retail" DX cluster.
>>>>>
>>>>>> On 4/25/2020 10:32 AM, Jim Rhodes wrote:
>>>>>> I had been using a power pole strip to power everything. After seeing some
>>>>>> discussion on this topic some time ago I found that in the string of 3
>>>>>> power pole connections in my setup at the time I was seeing around a 1 volt
>>>>>> drop in the voltage on the K3 metering between receive and 100 watts
>>>>>> keydown. That voltage drop was confirmed by my VOM so I wired the rig
>>>>>> directly to the supply and the voltage drop was less than 0.25 volts. That
>>>>>> is the way my rigs and VHF/UHF amps will be connected from now on with only
>>>>>> a fuse inline. The low current stuff will stay on the power pole strip
>>>>>> where they do just fine lighting up lights and stuff.
>>>>>>
>>>>>>> On Sat, Apr 25, 2020, 09:16 Don Schroder <[hidden email]> wrote:
>>>>>>>
>>>>>>> Bob,
>>>>>>>
>>>>>>> Is it safe to run my K2 using Anderson Power Pole connections, and/or
>>>>>>> RigRunner equipment?
>>>>>>>
>>>>>>> For my info, what is the reason for NOT using them?
>>>>>>>
>>>>>>> I’m rewiring, and I want to do it right!
>>>>>>>
>>>>>>> Gunny, KE0PVQ
>>>>>>>
>>>>>>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for
>>>>>>> Windows 10
>>>>>>>
>>>>>>> From: Gmail<mailto:[hidden email]>
>>>>>>> Sent: Saturday, April 25, 2020 9:03 AM
>>>>>>> To: Bob McGraw K4TAX<mailto:[hidden email]>
>>>>>>> Cc: [hidden email]<mailto:[hidden email]>
>>>>>>> Subject: Re: [Elecraft] K3S poor CW keying further investigation
>>>>>>>
>>>>>>> Nuts, just measure the drop between radio and power supply see if it is
>>>>>>> reasonable. Mine is 0.25 volts when transmitting. I run 14.0 out of supply.
>>>>>>> Ray
>>>>>>> W8LYJ
>>>>>>>
>>>>>>> Sent from my iPad
>>>>>>>
>>>>>>>> On Apr 25, 2020, at 07:48, Bob McGraw K4TAX <[hidden email]> wrote:
>>>>>>>>
>>>>>>>> As to the RigRunner power pole strip.........PUT IT IN THE TRASH where
>>>>>>> it belongs. NEVER NEVER NEVER use a power distribution strip to power a
>>>>>>> 100 watt radio. ALWAYS connect the radio direct to the power supply
>>>>>>> terminals. NO exceptions!
>>>>>>>> 73
>>>>>>>>
>>>>>>>> Bob, K4TAX
>>>>>>>>
>>>>>>>>
>>>>>>>>> On 4/25/2020 7:13 AM, Chuck Chandler wrote:
>>>>>>>>> After more checking, I suspect the internal 100W amp is the common
>>>>>>> factor
>>>>>>>>> in the poor keying characteristics I'm seeing and hearing about from my
>>>>>>>>> rig. I am trying to determine if my power supply is doing it's job.
>>>>>>>>>
>>>>>>>>> I'm using a TenTec 963 switching supply rated at 25A continuous. At
>>>>>>> rest
>>>>>>>>> the K3S panel display shows 13.6V, with full power key down it dips to
>>>>>>> 11.5
>>>>>>>>> or so. This seems like a lot. I'm running the power cable thru a
>>>>>>>>> RigRunner Powerpole strip. If I can dig out another power supply from
>>>>>>> the
>>>>>>>>> packed boxes I can wire the K3S directly to the supply.
>>>>>>>>>
>>>>>>>>> Is 11.5V at key down enough to cause the slow rise time being reported?
>>>>>>>>>
>>>>>>>>> 73 de Chuck, WS1L
>>>>>>>>>
>>>>>>>> ______________________________________________________________
>>>>>>>> Elecraft mailing list
>>>>>>>> Home:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>>> Help:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>>> Post: mailto:[hidden email]
>>>>>>>>
>>>>>>>> This list hosted by:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>>> Please help support this email list:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>>> Message delivered to [hidden email]
>>>>>>> ______________________________________________________________
>>>>>>> Elecraft mailing list
>>>>>>> Home:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>> Help:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>> Post: mailto:[hidden email]
>>>>>>>
>>>>>>> This list hosted by:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>> Please help support this email list:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>> Message delivered to [hidden email]
>>>>>>>
>>>>>>> ______________________________________________________________
>>>>>>> Elecraft mailing list
>>>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>>>> Post: mailto:[hidden email]
>>>>>>>
>>>>>>> This list hosted by: http://www.qsl.net
>>>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>>>> Message delivered to [hidden email]
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by: http://www.qsl.net
>>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>>> Message delivered to [hidden email]
>>>>> ______________________________________________________________
>>>>> Elecraft mailing list
>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>> Post: mailto:[hidden email]
>>>>>
>>>>> This list hosted by: http://www.qsl.net
>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>> Message delivered to [hidden email]
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to [hidden email]
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Chuck, KE9UW

ke9uw

Re: K3S poor CW keying further investigation

In reply to this post by Pete Lascell-2

Wonder what the time constant is for a remote sense power supply.

Jack BMW Motorcycles
Chuck KE9UW
[hidden email]

Sent from my iPad

> On Apr 25, 2020, at 2:00 PM, Pete Lascell <[hidden email]> wrote:
>
> To bad the power supply doesn't have remote voltage sense to regulate at the far end of the 12 volt power cable.
> Pete W4WWQ
>
> ----- Original Message -----
> From: <[hidden email]>
> To: <[hidden email]>
> Sent: 4/25/2020 2:47:12 PM
> Subject: Re: [Elecraft] K3S poor CW keying further investigation
> ________________________________________________________________________________
>
> Hi Pete,
>
>
> The K3 100 watt power amplifier includes a 25 amp circuit breaker
> on the rear panel of your radio. The rest of the K3 electronics is
> protected by an internal 5 amp self resetting fuse.
>
>
> There's absolutely no need for external fuses, except in a mobile installation
> where external fuses are required in both the positive and negative power
> leads to avoid a possibly disastrous automotive fire.
>
>
> 73
> Frank
> W3LPL
>
> ----- Original Message -----
>
> From: "N4ZR" <[hidden email]>
> To: "Martin Sole" <[hidden email]>, [hidden email]
> Sent: Saturday, April 25, 2020 4:54:37 PM
> Subject: Re: [Elecraft] K3S poor CW keying further investigation
>
> Thanks, Martin - I take it all back - my radio drops the voltage down to
> 11.0 volts at 100 watts key down. I'm really surprised, because I
> figured that the breakers in the 4005i wouldn't have so much drop.I'll
> have to figure out how best to siamese my power supply output so that it
> goes both to the RigRunner and directly to the radio. That'll leave the
> power supply's fusing as the only protection for the radio, but I guess
> that's OK.
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at <http://reversebeacon.net>, now
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
>
>> On 4/25/2020 12:24 PM, Martin Sole wrote:
>> DISP and rotate vfo B for desired measurement option.
>>
>> Martin, HS0ZED
>>
>>
>>
>>> On 25/04/2020 23:19, N4ZR wrote:
>>> That's right - my focus was (perhaps too narrowly) on the behavior of
>>> the power supply under load, not on losses in the system. Now if
>>> someone can just tell me how to read the voltage at the transceiver -
>>> I know there's a menu setting somewhere but my radio is fairly early
>>> and the manual doesn't say.
>>>
>>> 73, Pete N4ZR
>>> Check out the Reverse Beacon Network
>>> at <http://reversebeacon.net>, now
>>> spotting RTTY activity worldwide.
>>> For spots, please use your favorite
>>> "retail" DX cluster.
>>>
>>> On 4/25/2020 11:25 AM, hawley, charles j jr wrote:
>>>> I did notice that the post mentioned that his power supply dipped in
>>>> voltage but as for preventing issues due to low voltage, it's not
>>>> your voltmeter on the power supply that is the proper indicator. It
>>>> is the voltage on the input to the K3 that you should be noting.
>>>> It's available on the menu and displays in the VFO B area on the
>>>> screen.
>>>>
>>>> Jack BMW Motorcycles
>>>> Chuck KE9UW
>>>> [hidden email]
>>>>
>>>> Sent from my iPad
>>>>
>>>>> On Apr 25, 2020, at 9:51 AM, N4ZR <[hidden email]> wrote:
>>>>>
>>>>> For whatever it may be worth, my K3 is run through a West Mountain
>>>>> RigRunner 4005i, and the voltmeter on my SEC 1235M doesn't even
>>>>> flicker when I go key-down at 100 watts.
>>>>>
>>>>> I'm wondering if a 25-amp-rated supply (perhaps a little
>>>>> optimistic) might be to blame. My K3 draws 20.2 amps at 100 watts
>>>>> key down.
>>>>>
>>>>> 73, Pete N4ZR
>>>>> Check out the Reverse Beacon Network
>>>>> at <http://reversebeacon.net>, now
>>>>> spotting RTTY activity worldwide.
>>>>> For spots, please use your favorite
>>>>> "retail" DX cluster.
>>>>>
>>>>>> On 4/25/2020 10:32 AM, Jim Rhodes wrote:
>>>>>> I had been using a power pole strip to power everything. After
>>>>>> seeing some
>>>>>> discussion on this topic some time ago I found that in the string
>>>>>> of 3
>>>>>> power pole connections in my setup at the time I was seeing around
>>>>>> a 1 volt
>>>>>> drop in the voltage on the K3 metering between receive and 100 watts
>>>>>> keydown. That voltage drop was confirmed by my VOM so I wired the rig
>>>>>> directly to the supply and the voltage drop was less than 0.25
>>>>>> volts. That
>>>>>> is the way my rigs and VHF/UHF amps will be connected from now on
>>>>>> with only
>>>>>> a fuse inline. The low current stuff will stay on the power pole
>>>>>> strip
>>>>>> where they do just fine lighting up lights and stuff.
>>>>>>
>>>>>>> On Sat, Apr 25, 2020, 09:16 Don Schroder
>>>>>>> <[hidden email]> wrote:
>>>>>>>
>>>>>>> Bob,
>>>>>>>
>>>>>>> Is it safe to run my K2 using Anderson Power Pole connections,
>>>>>>> and/or
>>>>>>> RigRunner equipment?
>>>>>>>
>>>>>>> For my info, what is the reason for NOT using them?
>>>>>>>
>>>>>>> I’m rewiring, and I want to do it right!
>>>>>>>
>>>>>>> Gunny, KE0PVQ
>>>>>>>
>>>>>>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for
>>>>>>> Windows 10
>>>>>>>
>>>>>>> From: Gmail<mailto:[hidden email]>
>>>>>>> Sent: Saturday, April 25, 2020 9:03 AM
>>>>>>> To: Bob McGraw K4TAX<mailto:[hidden email]>
>>>>>>> Cc: [hidden email]<mailto:[hidden email]>
>>>>>>> Subject: Re: [Elecraft] K3S poor CW keying further investigation
>>>>>>>
>>>>>>> Nuts, just measure the drop between radio and power supply see if
>>>>>>> it is
>>>>>>> reasonable. Mine is 0.25 volts when transmitting. I run 14.0 out
>>>>>>> of supply.
>>>>>>> Ray
>>>>>>> W8LYJ
>>>>>>>
>>>>>>> Sent from my iPad
>>>>>>>
>>>>>>>> On Apr 25, 2020, at 07:48, Bob McGraw K4TAX
>>>>>>>> <[hidden email]> wrote:
>>>>>>>>
>>>>>>>> As to the RigRunner power pole strip.........PUT IT IN THE
>>>>>>>> TRASH where
>>>>>>> it belongs. NEVER NEVER NEVER use a power distribution strip
>>>>>>> to power a
>>>>>>> 100 watt radio. ALWAYS connect the radio direct to the power
>>>>>>> supply
>>>>>>> terminals. NO exceptions!
>>>>>>>> 73
>>>>>>>>
>>>>>>>> Bob, K4TAX
>>>>>>>>
>>>>>>>>
>>>>>>>>> On 4/25/2020 7:13 AM, Chuck Chandler wrote:
>>>>>>>>> After more checking, I suspect the internal 100W amp is the common
>>>>>>> factor
>>>>>>>>> in the poor keying characteristics I'm seeing and hearing about
>>>>>>>>> from my
>>>>>>>>> rig. I am trying to determine if my power supply is doing it's
>>>>>>>>> job.
>>>>>>>>>
>>>>>>>>> I'm using a TenTec 963 switching supply rated at 25A
>>>>>>>>> continuous. At
>>>>>>> rest
>>>>>>>>> the K3S panel display shows 13.6V, with full power key down it
>>>>>>>>> dips to
>>>>>>> 11.5
>>>>>>>>> or so. This seems like a lot. I'm running the power cable thru a
>>>>>>>>> RigRunner Powerpole strip. If I can dig out another power
>>>>>>>>> supply from
>>>>>>> the
>>>>>>>>> packed boxes I can wire the K3S directly to the supply.
>>>>>>>>>
>>>>>>>>> Is 11.5V at key down enough to cause the slow rise time being
>>>>>>>>> reported?
>>>>>>>>>
>>>>>>>>> 73 de Chuck, WS1L
>>>>>>>>>
>>>>>>>> ______________________________________________________________
>>>>>>>> Elecraft mailing list
>>>>>>>> Home:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>>
>>>>>>>> Help:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>>
>>>>>>>> Post: mailto:[hidden email]
>>>>>>>>
>>>>>>>> This list hosted by:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>>
>>>>>>>> Please help support this email list:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>>
>>>>>>>> Message delivered to [hidden email]
>>>>>>> ______________________________________________________________
>>>>>>> Elecraft mailing list
>>>>>>> Home:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0
>>>>>>>
>>>>>>> Help:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0
>>>>>>>
>>>>>>> Post: mailto:[hidden email]
>>>>>>>
>>>>>>> This list hosted by:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0
>>>>>>>
>>>>>>> Please help support this email list:
>>>>>>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0
>>>>>>>
>>>>>>> Message delivered to [hidden email]
>>>>>>>
>>>>>>> ______________________________________________________________
>>>>>>> Elecraft mailing list
>>>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>>>> Post: mailto:[hidden email]
>>>>>>>
>>>>>>> This list hosted by: http://www.qsl.net
>>>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>>>> Message delivered to [hidden email]
>>>>>> ______________________________________________________________
>>>>>> Elecraft mailing list
>>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>>> Post: mailto:[hidden email]
>>>>>>
>>>>>> This list hosted by: http://www.qsl.net
>>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>>> Message delivered to [hidden email]
>>>>> ______________________________________________________________
>>>>> Elecraft mailing list
>>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>>> Post: mailto:[hidden email]
>>>>>
>>>>> This list hosted by: http://www.qsl.net
>>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>> Message delivered to [hidden email]
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to [hidden email]
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Chuck, KE9UW

Vic Rosenthal

Re: K3S poor CW keying further investigation

In reply to this post by Don Schroder

Power poles are fine, if they are installed according to directions. Rig
runners are OK for accessories and QRP rigs, but if your K2 has the
amplifier it should be connected directly to the power supply.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 25/04/2020 17:15, Don Schroder wrote:

Leroy Buller

Re: K3S poor CW keying further investigation

In reply to this post by Chuck Chandler

Chuck, I am late to this discussion so I might be saying things that
already been said. I found the same issue. Voltage down to 11.5 volts on
any ps I used. So, I found the issue was power pole connectors that were
to light. Look for power pole connectors that handle 30 amps or so. Power
poles come in different amperage with the same shell. Don't get fooled
with that. I did.

Then I limited the cable to 24 inches. #10 wire and higher current power
poles. Voltage dropped fro. 13.8 to 13.1 at 100 watts .

Somebody said that DC systems act significantly to resistance. Lower the
resistance to the smallest number is what I tried to do.

Some ps have funky connectors o. The back, and might have to jigger those
to bolts and nuts. I opted to use sleeves crimped on the end of the wire,
soldered, and then stuffed in the connector. The set screws were replace
with machine bolts and tighten but you cannot over tighten because the
threads might strip.

Lee K0WA

On Sat, Apr 25, 2020, 7:14 AM Chuck Chandler <[hidden email]> wrote:

> After more checking, I suspect the internal 100W amp is the common factor
> in the poor keying characteristics I'm seeing and hearing about from my
> rig. I am trying to determine if my power supply is doing it's job.
>
> I'm using a TenTec 963 switching supply rated at 25A continuous. At rest
> the K3S panel display shows 13.6V, with full power key down it dips to 11.5
> or so. This seems like a lot. I'm running the power cable thru a
> RigRunner Powerpole strip. If I can dig out another power supply from the
> packed boxes I can wire the K3S directly to the supply.
>
> Is 11.5V at key down enough to cause the slow rise time being reported?
>
> 73 de Chuck, WS1L
>
> --
>
>
> ===================
> Chuck Chandler
> [hidden email]
> ===================
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Bob McGraw - K4TAX

Power Supplies and Voltage drop

{I changed the topic for good reason.}    Was " K3S poor CW keying
further investigation"

Lee brings up a good point with regard to power supply terminals.

If you have one of those power supplies that have the terminals with a
set screw in the side, you are limited to the number or wires or wire
size which can be correctly inserted.

Here is what I did to remedy the situation.    I obtained two 10-32 x 2"
brass screws from the hardware store. I got 4 nuts, 2 for each screw, 4
flat washers, 2 for each screw and two wing nuts.   I then cut the head
off of each screw and filed a flat spot about 1/2 " long and deep enough
to removed the threads. This modified screw was then inserted into the
power supply terminal so that the flat spot aligned with the set screw.
Tighten the set screw. Then run two of the nuts on the protruding
screw, just up to the power supply connector, but not tight against it,
and the second nut against the first to form a jam-nut. Add a flat
washer, add all the ring terminals you wish, and then a flat washer and
finally the wing nut.   Do the same for the other terminal.   Now you
have plenty of stud length and have not actually modified your power
supply. Some fear making modifications for fear of loosing warranty
coverage.

As a bonus, should you desire to remove the power supply, loosen the set
screws on the power supply connector and pull out the entire bolt/stud
assembly, ring terminals and wires, leaving them attached.   Only one
set screw to loosen removes the entire assembly. Now how neat is that?

73

Bob, K4TAX

On 4/25/2020 9:50 PM, Leroy Buller wrote:

> Chuck, I am late to this discussion so I might be saying things that
> already been said. I found the same issue. Voltage down to 11.5 volts on
> any ps I used. So, I found the issue was power pole connectors that were
> to light. Look for power pole connectors that handle 30 amps or so. Power
> poles come in different amperage with the same shell. Don't get fooled
> with that. I did.
>
> Then I limited the cable to 24 inches. #10 wire and higher current power
> poles. Voltage dropped fro. 13.8 to 13.1 at 100 watts .
>
> Somebody said that DC systems act significantly to resistance. Lower the
> resistance to the smallest number is what I tried to do.
>
> Some ps have funky connectors o. The back, and might have to jigger those
> to bolts and nuts. I opted to use sleeves crimped on the end of the wire,
> soldered, and then stuffed in the connector. The set screws were replace
> with machine bolts and tighten but you cannot over tighten because the
> threads might strip.
>
>
> Lee K0WA
>
> O

Bob McGraw - K4TAX

Re: Power Supplies and Voltage drop

One point brought to my attention by Jack Brindle, has to do with the
indicated voltage on the K3S display. The manual page 57, ADC REF makes
it clear as to the calibration procedure and that if the ADC REF is not
correct, then display values, such as the rig's supply voltage may not
indicate correctly.

I did check mine and found it to be in slight error. Once corrected
specifically following the procedure, things fell in line correctly.
You will need a DVM to accurately measure the voltage at pin #2 at the
ACC connector. This must be done "*while the ADC REF parameter is
being viewed in the menu*.".

Hopes this information helps.

73

Bob, K4TAX

On 4/25/2020 10:21 PM, Bob McGraw K4TAX wrote:

> {I changed the topic for good reason.}    Was " K3S poor CW keying
> further investigation"
>
> Lee brings up a good point with regard to power supply terminals.
>
> If you have one of those power supplies that have the terminals with a
> set screw in the side, you are limited to the number or wires or wire
> size which can be correctly inserted.
>
> Here is what I did to remedy the situation.    I obtained two 10-32 x
> 2" brass screws from the hardware store. I got 4 nuts, 2 for each
> screw, 4 flat washers, 2 for each screw and two wing nuts.   I then
> cut the head off of each screw and filed a flat spot about 1/2 " long
> and deep enough to removed the threads. This modified screw was then
> inserted into the power supply terminal so that the flat spot aligned
> with the set screw. Tighten the set screw. Then run two of the nuts
> on the protruding screw, just up to the power supply connector, but
> not tight against it, and the second nut against the first to form a
> jam-nut. Add a flat washer, add all the ring terminals you wish, and
> then a flat washer and finally the wing nut.   Do the same for the
> other terminal.   Now you have plenty of stud length and have not
> actually modified your power supply. Some fear making modifications
> for fear of loosing warranty coverage.
>
> As a bonus, should you desire to remove the power supply, loosen the
> set screws on the power supply connector and pull out the entire
> bolt/stud assembly, ring terminals and wires, leaving them attached.
> Only one set screw to loosen removes the entire assembly. Now how
> neat is that?
>
> 73
>
> Bob, K4TAX
>
>
> On 4/25/2020 9:50 PM, Leroy Buller wrote:
>> Chuck, I am late to this discussion so I might be saying things that
>> already been said. I found the same issue. Voltage down to 11.5
>> volts on
>> any ps I used. So, I found the issue was power pole connectors that
>> were
>> to light. Look for power pole connectors that handle 30 amps or so.
>> Power
>> poles come in different amperage with the same shell. Don't get fooled
>> with that. I did.
>>
>> Then I limited the cable to 24 inches. #10 wire and higher current
>> power
>> poles. Voltage dropped fro. 13.8 to 13.1 at 100 watts .
>>
>> Somebody said that DC systems act significantly to resistance. Lower the
>> resistance to the smallest number is what I tried to do.
>>
>> Some ps have funky connectors o. The back, and might have to jigger
>> those
>> to bolts and nuts. I opted to use sleeves crimped on the end of the
>> wire,
>> soldered, and then stuffed in the connector.   The set screws were
>> replace
>> with machine bolts and tighten but you cannot over tighten because the
>> threads might strip.
>>
>>
>> Lee K0WA
>>
>> O

Phil Kane-2

Re: Power Supplies and Voltage drop

In reply to this post by Bob McGraw - K4TAX

On 4/25/2020 8:21 PM, Bob McGraw K4TAX wrote:

> Here is what I did to remedy the situation. I obtained two 10-32 x 2"
> brass screws from the hardware store. I got 4 nuts, 2 for each screw, 4
> flat washers, 2 for each screw and two wing nuts. I then cut the head
> off of each screw and filed a flat spot about 1/2 " long and deep enough
> to removed the threads.

I fixed my brand-new Astron SS-50M a bit differently. One set screw on
the connection block was seized up, so Astron sent me two new blocks
with instructions to open the case and replace them. When I opened the
case I saw that the leads to the blocks had ring terminals held to the
blocks by a short screw. I removed the existing blocks and replaced
them with 10-32 x 2" brass screws. I used two short plates of ABS from
TAP Plastics to serve as insulated spacers (one inside the case and one
outside the case) and drilled the appropriate holes to permit the screws
to be held through the case with appropriate nuts and washers. The
leads to my power distribution board) are AWG 6 terminated in standard
electrical lugs held by massive set-screws and are fastened onto the
screws by appropriate nuts. If I have to remove them I keep a Spintite
(nut driver) nearby. Works great so far!

73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]