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KAT500 power source

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Lane-2

KAT500 power source

Hi all,

I just put together a KAT500 and would like to be sure of this last step of
supplying power to it.

I'm have the 18AWG Rg Angle cable shipped with it which plugs into the
11-15 VDC on the back of the KAT500. However, I'm not exactly sure if I
have the right power for it. My power supply is an Alinco DM-330MV which
has the +- clips on the lower left where I think this could go. Hoping
someone can confirm.

http://www.alinco.com/Products/DM330MVE/

Though my version has MV and not MVE or MVT printed on it.

Any help much appreciated.
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Dick Dievendorff

Re: KAT500 power source

It's not that critical. Just 11 to 14 volts or so at an ampere max. The positive is the center of the coaxial DC power connector.

73 de Dick, K6KR

On May 1, 2013, at 19:20, SRD <[hidden email]> wrote:

> Hi all,
>
> I just put together a KAT500 and would like to be sure of this last step of
> supplying power to it.
>
> I'm have the 18AWG Rg Angle cable shipped with it which plugs into the
> 11-15 VDC on the back of the KAT500. However, I'm not exactly sure if I
> have the right power for it. My power supply is an Alinco DM-330MV which
> has the +- clips on the lower left where I think this could go. Hoping
> someone can confirm.
>
> http://www.alinco.com/Products/DM330MVE/
>
> Though my version has MV and not MVE or MVT printed on it.
>
> Any help much appreciated.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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KC6CNN

Re: KAT500 power source

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k6dgw

Re: KAT500 power source

On 5/1/2013 7:38 PM, Gerald Manthey wrote:
> Can the KPA500 handle more than 1000 watts? Say like 1100 to 1500?

You must mean KAT500, and I don't think so. At least I wouldn't try it.
I think it will handle anything the KPA500 will make [~700W], after
all, this *is* Elecraft, and that's what they do, but 1,500W is over
twice that much and seems to be pushing it more than a little.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org

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KC6CNN

Re: KAT500 power source

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Vic Rosenthal

Re: KAT500 power source

I suspect that the power handling is not really dependent on the SWR, but rather on the
nature of the impedance that gives rise to that SWR (the resistance and both the magnitude
and the sign of the reactance).

One antenna system showing a 3:1 SWR might produce high voltages and low currents in the
tuner, and another the opposite. The stress on the different components might vary all
over the place.

I know Elecraft is conservative, but I recommend caution in this case.

On 5/1/2013 7:51 PM, Gerald Manthey wrote:

> Yea, I meant KAT500. Ok I saw it would do 1000 at 3-1 but was curious about
> 1500.
> Thanks
> On May 1, 2013 9:48 PM, "Fred Jensen" <[hidden email]> wrote:
>
>> On 5/1/2013 7:38 PM, Gerald Manthey wrote:
>>
>>> Can the KPA500 handle more than 1000 watts? Say like 1100 to 1500?
>>>
>> You must mean KAT500, and I don't think so. At least I wouldn't try it.
>> I think it will handle anything the KPA500 will make [~700W], after all,
>> this *is* Elecraft, and that's what they do, but 1,500W is over twice that
>> much and seems to be pushing it more than a little.
>>
>> 73,
>>
>> Fred K6DGW
>> - Northern California Contest Club
>> - CU in the 2013 Cal QSO Party 5-6 Oct 2013
>> - www.cqp.org
>>
>>
>>

--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/

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Jim Brown-10

Re: KAT500 power source

In reply to this post by KC6CNN

On 5/1/2013 7:38 PM, Gerald Manthey wrote:
> Can the KPA500 handle more than 1000 watts? Say like 1100 to 1500?

Yes, for SWR of about 3:1 or better, it's good for USA legal limit. I'm
running two KAT500s with Ten Tec Titan 425 legal limit amps into
antennas that don't need a lot of tuning. The thing you must be careful
of (and get RIGHT) is that your power amp is bypassed while the KAT500
is tuning. If the amp cannot be forced into bypass mode by interrupting
PTT (my Titans cannot), you must do that manually (and I do).

73, Jim K9YC
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KC6CNN

Re: KAT500 power source

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Dick Dievendorff

Re: KAT500 power source

In reply to this post by k6dgw

http://www.elecraft.com/KAT500/kat500.html

Specifications

Frequency Typical Matching Range and Power Limit
3 - 30 MHz 600W into 5 to 500 Ohms (10:1 SWR)
1000W into 16 to 150 Ohms (3:1 SWR )

1.8 - 2MHz 600W into 10 to 500 Ohms (5:1 Low Impedance, 10:1
High Impedance SWR)
1000W into 16 to 150 Ohms (3:1 SWR )

30 - 60MHz 500W into 5:1 SWR (10 to 250 Ohms)

Matching specified to a 1.0:1 to 1.6:1 resultant SWR. Power rating is ICAS
(Intermittent Commercial and Amateur Service).

73 de Dick, K6KR

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Fred Jensen
Sent: Wednesday, May 01, 2013 7:49 PM
To: [hidden email]
Subject: Re: [Elecraft] KAT500 power source

On 5/1/2013 7:38 PM, Gerald Manthey wrote:
> Can the KPA500 handle more than 1000 watts? Say like 1100 to 1500?

You must mean KAT500, and I don't think so. At least I wouldn't try it.
I think it will handle anything the KPA500 will make [~700W], after all,
this *is* Elecraft, and that's what they do, but 1,500W is over twice that
much and seems to be pushing it more than a little.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org

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KC6CNN

Re: KAT500 power source

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Bill K9YEQ

Re: KAT500 power source

Gerald,

I run 1500 through mine. I tune first into a load that has low SWR first
before I use the Tuner as it won't handle high swr at the legal limit based
on the specs. Obviously it is safer to do so at 500 watts and it is pushing
the design and component limits should one chose to do so at 1500 watts. I
currently have a remote tuner near the antenna load and am using the KAT500
in the shack. (Yes, I know, double tuner loss) This gives my amp a near
perfect load. The remote tuner doesn't get it at near 1:1, but I see <
1.3:1 to the Kat500 which provides the near 1:1. You can do the math to
see the amount of reflected power, I don't have to, I have a meter in the
amp to tell me that my reflected power is near 0 merely a meter twitch. I
would rather waste a tuner than a $6K amp.

73,
Bill
K9YEQ
K2 FT, KX1 FT, KX3 FT, KAT500 FT

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Gerald Manthey
Sent: Thursday, May 02, 2013 9:21 AM
To: Dick Dievendorff
Cc: [hidden email]
Subject: Re: [Elecraft] KAT500 power source

Dick, On the Elecraft web site in the news section it reads in part " The
KAT500 uses the same topology and high performance tuning algorithms as the
popular 100W autotuner in the K3. Typical matching range at 500-600W is up
to 10:1 on most bands. (slightly less on 160m and 6M). This also equates to
a range of 3:1 for higher power levels, up to 1200-1500 W."
So is it up to 1200 - 1500 watts?
On May 2, 2013 8:20 AM, "Dick Dievendorff" <[hidden email]> wrote:

> http://www.elecraft.com/KAT500/kat500.html
>
> Specifications
>
> Frequency Typical Matching Range and Power Limit
> 3 - 30 MHz 600W into 5 to 500 Ohms (10:1 SWR)
> 1000W into 16 to 150 Ohms (3:1 SWR )
>
> 1.8 - 2MHz 600W into 10 to 500 Ohms (5:1 Low Impedance, 10:1
> High Impedance SWR)
> 1000W into 16 to 150 Ohms (3:1 SWR )
>
> 30 - 60MHz 500W into 5:1 SWR (10 to 250 Ohms)
>
> Matching specified to a 1.0:1 to 1.6:1 resultant SWR. Power rating is
> ICAS (Intermittent Commercial and Amateur Service).
>
>
> 73 de Dick, K6KR
>
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Fred Jensen
> Sent: Wednesday, May 01, 2013 7:49 PM
> To: [hidden email]
> Subject: Re: [Elecraft] KAT500 power source
>
> On 5/1/2013 7:38 PM, Gerald Manthey wrote:
> > Can the KPA500 handle more than 1000 watts? Say like 1100 to 1500?
>
> You must mean KAT500, and I don't think so. At least I wouldn't try it.
> I think it will handle anything the KPA500 will make [~700W], after
> all, this *is* Elecraft, and that's what they do, but 1,500W is over
> twice that much and seems to be pushing it more than a little.
>
> 73,
>
> Fred K6DGW
> - Northern California Contest Club
> - CU in the 2013 Cal QSO Party 5-6 Oct 2013
> - www.cqp.org
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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> list: http://www.qsl.net/donate.html
>
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>
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> list: http://www.qsl.net/donate.html
>

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Jim Brown-10

Re: KAT500 power source

In reply to this post by KC6CNN

On 5/2/2013 7:55 AM, Walter Underwood wrote:
> But the specs trump the "news". The news was a forecast.
>
> So 1500W may be in the "it works for me" category instead of "supported".

1500W came as straight from the horse's mouth as it is possible to get
-- the engineer who ran the beta test program, and who runs them at
legal limit in his own contesting station.

73, Jim K9YC
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Richard Thorne-4

Re: KAT500 power source

This would be nice for my station. I don't have huge swr issues. I'd
just like to flatten the swr on my 40m yagi or 80m delta loop while
bouncing around contesting or dxing.

Rich - N5ZC

On 5/2/2013 10:36 AM, Jim Brown wrote:

> On 5/2/2013 7:55 AM, Walter Underwood wrote:
>> But the specs trump the "news". The news was a forecast.
>>
>> So 1500W may be in the "it works for me" category instead of
>> "supported".
>
> 1500W came as straight from the horse's mouth as it is possible to get
> -- the engineer who ran the beta test program, and who runs them at
> legal limit in his own contesting station.
>
> 73, Jim K9YC
> ______________________________________________________________
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Eric Swartz - WA6HHQ

Re: KAT500 power source

Administrator

In reply to this post by Jim Brown-10

Its important to understand that KAT500 operation outside of the
specified power limits is not covered by the warranty should something
get damaged. We set these specifications with some safety margin to
assure that the ATU will not become damaged in normal operation.

While it may work at higher powers, one does so at your own risk.

73,

Eric
elecraft.com

On 5/2/2013 8:36 AM, Jim Brown wrote:

KC6CNN

Re: KAT500 power source

CONTENTS DELETED

The author has deleted this message.

Eric Swartz - WA6HHQ

Re: KAT500 power source

Administrator

Yes, that is incorrect. I was not aware that was there and we will delete it from the web page. The Manual should be correct. The QST review also had the correct specs, I believe.

Eric
elecraft.com
_..._

On May 2, 2013, at 3:23 PM, Gerald Manthey <[hidden email]> wrote:

> Hello Eric
> So the web page saying 1200 to 1500 would not be correct? I would only run
> the amp at 1000 anyway, but just making sure before I buy one.
> Thanks
> Gerald.
> On May 2, 2013 2:28 PM, "Eric Swartz - WA6HHQ, Elecraft" <[hidden email]>
> wrote:
>
>> Its important to understand that KAT500 operation outside of the specified
>> power limits is not covered by the warranty should something get damaged.
>> We set these specifications with some safety margin to assure that the ATU
>> will not become damaged in normal operation.
>>
>> While it may work at higher powers, one does so at your own risk.
>>
>> 73,
>>
>> Eric
>> elecraft.com
>>
>> On 5/2/2013 8:36 AM, Jim Brown wrote:
>>
>>> On 5/2/2013 7:55 AM, Walter Underwood wrote:
>>>
>>>> But the specs trump the "news". The news was a forecast.
>>>>
>>>> So 1500W may be in the "it works for me" category instead of "supported".
>>>
>>> 1500W came as straight from the horse's mouth as it is possible to get --
>>> the engineer who ran the beta test program, and who runs them at legal
>>> limit in his own contesting station.
>>>
>>> 73, Jim K9YC
>>> ______________________________**______________________________**__
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>>
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