Elecraft › [K3]

Re K3 power supply

Classic

List

Threaded

11 messages Options

mikerodgerske5gbc

Re K3 power supply

While a 20a supply will get you by for the 100w radio, a 30a will provide "insurance". As Adrian pointed out adjustable voltage is a plus.
Power distribution strips should be avoided as some have found too much voltage drop with them. Run the k3 power direct.

73
Mike R

Play me some fiddle, but no stinkin' violin!

Amateur/Ham Radio KE5GBC
HF & Echolink mobile
______________________________________________________________
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

Joe Subich, W4TV-4

Re: Re K3 power supply

On 3/27/2012 6:22 AM, Mike Rodgers wrote:
> While a 20a supply will get you by for the 100w radio,

20A might get by but the IMD will suffer badly when the supply drops
out of regulation on voice peaks. If the K3's current display is
showing 16 - 17A steady state at 100W CW, one can be sure the short
term peaks in SSB are greater than 25A.

Give me a solid 25A CCS/35A ICAS analog supply set for 15.0V on the
K3 any day.

73,

... Joe, W4TV

On 3/27/2012 6:22 AM, Mike Rodgers wrote:

> While a 20a supply will get you by for the 100w radio, a 30a will provide "insurance". As Adrian pointed out adjustable voltage is a plus.
> Power distribution strips should be avoided as some have found too much voltage drop with them. Run the k3 power direct.
>
> 73
> Mike R
>
> Play me some fiddle, but no stinkin' violin!
>
> Amateur/Ham Radio KE5GBC
> HF& Echolink mobile
> ______________________________________________________________
> 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
>

______________________________________________________________
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

Matt Zilmer

Re: Re K3 power supply

Like a Samlex 1235!

matt W6NIA

On Tue, 27 Mar 2012 11:56:56 -0400, you wrote:

>
>On 3/27/2012 6:22 AM, Mike Rodgers wrote:
> > While a 20a supply will get you by for the 100w radio,
>
>20A might get by but the IMD will suffer badly when the supply drops
>out of regulation on voice peaks. If the K3's current display is
>showing 16 - 17A steady state at 100W CW, one can be sure the short
>term peaks in SSB are greater than 25A.
>
>Give me a solid 25A CCS/35A ICAS analog supply set for 15.0V on the
>K3 any day.
>
>73,
>
> ... Joe, W4TV
>
>
>On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>> While a 20a supply will get you by for the 100w radio, a 30a will provide "insurance". As Adrian pointed out adjustable voltage is a plus.
>> Power distribution strips should be avoided as some have found too much voltage drop with them. Run the k3 power direct.
>>
>> 73
>> Mike R
>>
>> Play me some fiddle, but no stinkin' violin!
>>
>> Amateur/Ham Radio KE5GBC
>> HF& Echolink mobile
>> ______________________________________________________________
>> 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
>>
>______________________________________________________________
>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

Joe Subich, W4TV-4

Re: Re K3 power supply

> Like a Samlex 1235!

Another noisy, failure prone switcher. Give me the heavy iron *ANALOG*
supply any day.

73,

... Joe, W4TV

On 3/27/2012 12:23 PM, Matt Zilmer wrote:

> Like a Samlex 1235!
>
> matt W6NIA
>
> On Tue, 27 Mar 2012 11:56:56 -0400, you wrote:
>
>>
>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>> While a 20a supply will get you by for the 100w radio,
>>
>> 20A might get by but the IMD will suffer badly when the supply drops
>> out of regulation on voice peaks. If the K3's current display is
>> showing 16 - 17A steady state at 100W CW, one can be sure the short
>> term peaks in SSB are greater than 25A.
>>
>> Give me a solid 25A CCS/35A ICAS analog supply set for 15.0V on the
>> K3 any day.
>>
>> 73,
>>
>> ... Joe, W4TV
>>
>>
>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>> While a 20a supply will get you by for the 100w radio, a 30a will provide "insurance". As Adrian pointed out adjustable voltage is a plus.
>>> Power distribution strips should be avoided as some have found too much voltage drop with them. Run the k3 power direct.
>>>
>>> 73
>>> Mike R
>>>
>>> Play me some fiddle, but no stinkin' violin!
>>>
>>> Amateur/Ham Radio KE5GBC
>>> HF& Echolink mobile
>>> ______________________________________________________________
>>> 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
>>>
>> ______________________________________________________________
>> 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
>

'DGB'

Re: Re K3 power supply

In reply to this post by Matt Zilmer

Great supply, especially the 1235M with the meters. Very quite and
small. Radio Dan W7RF had the best price and was quick delivery when I
got it a couple of months ago.

73 Dwight NS9I

On 3/27/2012 11:23 AM, Matt Zilmer wrote:

> Like a Samlex 1235!
>
> matt W6NIA
>
> On Tue, 27 Mar 2012 11:56:56 -0400, you wrote:
>
>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>> While a 20a supply will get you by for the 100w radio,
>> 20A might get by but the IMD will suffer badly when the supply drops
>> out of regulation on voice peaks. If the K3's current display is
>> showing 16 - 17A steady state at 100W CW, one can be sure the short
>> term peaks in SSB are greater than 25A.
>>
>> Give me a solid 25A CCS/35A ICAS analog supply set for 15.0V on the
>> K3 any day.
>>
>> 73,
>>
>> ... Joe, W4TV
>>
>>
>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>> While a 20a supply will get you by for the 100w radio, a 30a will provide "insurance". As Adrian pointed out adjustable voltage is a plus.
>>> Power distribution strips should be avoided as some have found too much voltage drop with them. Run the k3 power direct.
>>>
>>> 73
>>> Mike R
>>>
>>> Play me some fiddle, but no stinkin' violin!
>>>
>>> Amateur/Ham Radio KE5GBC
>>> HF& Echolink mobile
>>> ______________________________________________________________
>>> 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
>>>
>> ______________________________________________________________
>> 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
> ______________________________________________________________
> 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
>

Greg - AB7R

Re: Re K3 power supply

In reply to this post by Joe Subich, W4TV-4

I agree, but I have heard nothing but good comments about the small
PowerWerx supply.

On 3/27/12, Joe Subich, W4TV <[hidden email]> wrote:

>
> > Like a Samlex 1235!
>
> Another noisy, failure prone switcher. Give me the heavy iron *ANALOG*
> supply any day.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 3/27/2012 12:23 PM, Matt Zilmer wrote:
>> Like a Samlex 1235!
>>
>> matt W6NIA
>>
>> On Tue, 27 Mar 2012 11:56:56 -0400, you wrote:
>>
>>>
>>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>>> While a 20a supply will get you by for the 100w radio,
>>>
>>> 20A might get by but the IMD will suffer badly when the supply drops
>>> out of regulation on voice peaks. If the K3's current display is
>>> showing 16 - 17A steady state at 100W CW, one can be sure the short
>>> term peaks in SSB are greater than 25A.
>>>
>>> Give me a solid 25A CCS/35A ICAS analog supply set for 15.0V on the
>>> K3 any day.
>>>
>>> 73,
>>>
>>> ... Joe, W4TV
>>>
>>>
>>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>>> While a 20a supply will get you by for the 100w radio, a 30a will
>>>> provide "insurance". As Adrian pointed out adjustable voltage is a plus.
>>>> Power distribution strips should be avoided as some have found too much
>>>> voltage drop with them. Run the k3 power direct.
>>>>
>>>> 73
>>>> Mike R
>>>>
>>>> Play me some fiddle, but no stinkin' violin!
>>>>
>>>> Amateur/Ham Radio KE5GBC
>>>> HF& Echolink mobile
>>>> ______________________________________________________________
>>>> 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
>>>>
>>> ______________________________________________________________
>>> 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
>>
> ______________________________________________________________
> 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
>

N5GE

Re: Re K3 power supply

In reply to this post by Joe Subich, W4TV-4

I have two Walt Williams (local Texas ham) 100 amp "heavy iron" DC supplies and
when I stop using them will be when they pry them from under my cold, dead
operating console ;o)

"Farmers rotate crops to keep their land strong.
Voters can keep THEIR LAND STRONG by rotating
politicians at the ballot box each term."
-- Otis Mukinfus --
http://www.otismukinfus.com

On Tue, 27 Mar 2012 12:44:47 -0400, "Joe Subich, W4TV" <[hidden email]> wrote:

>
> > Like a Samlex 1235!
>
>Another noisy, failure prone switcher. Give me the heavy iron *ANALOG*
>supply any day.
>
>73,
>
> ... Joe, W4TV

______________________________________________________________
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

Amateur Radio Operator N5GE

Pete Smith N4ZR

Re: Re K3 power supply

In reply to this post by Joe Subich, W4TV-4

Noisiest thing about my Samlex 1235M is the fan. AD5X did an excellent,
careful review of this supply right after it came out. The data are there.

73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000 and
arcluster.reversebeacon.net, port 7000

On 3/27/2012 12:44 PM, Joe Subich, W4TV wrote:

> > Like a Samlex 1235!
>
> Another noisy, failure prone switcher. Give me the heavy iron *ANALOG*
> supply any day.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 3/27/2012 12:23 PM, Matt Zilmer wrote:
>> Like a Samlex 1235!
>>
>> matt W6NIA
>>
>> On Tue, 27 Mar 2012 11:56:56 -0400, you wrote:
>>
>>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>>> While a 20a supply will get you by for the 100w radio,
>>> 20A might get by but the IMD will suffer badly when the supply drops
>>> out of regulation on voice peaks. If the K3's current display is
>>> showing 16 - 17A steady state at 100W CW, one can be sure the short
>>> term peaks in SSB are greater than 25A.
>>>
>>> Give me a solid 25A CCS/35A ICAS analog supply set for 15.0V on the
>>> K3 any day.
>>>
>>> 73,
>>>
>>> ... Joe, W4TV
>>>
>>>
>>> On 3/27/2012 6:22 AM, Mike Rodgers wrote:
>>>> While a 20a supply will get you by for the 100w radio, a 30a will provide "insurance". As Adrian pointed out adjustable voltage is a plus.
>>>> Power distribution strips should be avoided as some have found too much voltage drop with them. Run the k3 power direct.
>>>>
>>>> 73
>>>> Mike R
>>>>
>>>> Play me some fiddle, but no stinkin' violin!
>>>>
>>>> Amateur/Ham Radio KE5GBC
>>>> HF& Echolink mobile
>>>> ______________________________________________________________
>>>> 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
>>>>
>>> ______________________________________________________________
>>> 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
> ______________________________________________________________
> 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
>

'DGB'

Re: Re K3 power supply

In reply to this post by Joe Subich, W4TV-4

I've had the 1223 for 6-yrs no problems except the on/off sw went once,
which they shipped me a new one for free. With that batting record, That
is what led me to purchase the 1225m for the K-3. We are talking 1000's
of hrs. of operating time with lots of on/off gestures.

Of course, everyone has their own experiences indeed. YMMV! In addition,
the PowerWerx looks so similar, I'd have to wonder if it isn't also
built by Samlex, I know they make them for Rat Shak, and under other
names as well!

73 Dwight NS9I

On 3/27/2012 11:44 AM, Joe Subich, W4TV wrote:

~BG~

Re: Re K3 power supply

As somebody who uses one of the PowerWerx, it's decent. Like the Samlex,
the most noise seems to be the fan more than anything else.

./ben
W6MCM

On Tue, Mar 27, 2012 at 1:47 PM, DGB <[hidden email]> wrote:

> Of course, everyone has their own experiences indeed. YMMV! In addition,
> the PowerWerx looks so similar, I'd have to wonder if it isn't also
> built by Samlex, I know they make them for Rat Shak, and under other
> names as well!
>
> 73 Dwight NS9I
>
>
______________________________________________________________
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

Phil Salas

Re: Re K3 power supply

In reply to this post by 'DGB'

I also got my Samlex 1235M from Radio Dan. Have had it a couple of years.
Works great.

Phil - AD5X

______________________________________________________________
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