G Ops - K Line description in RadCom - slightly OT

[M0XDF]

Slightly off-topic, but I've opened up my March RadCom, to find a W&S add on the inside back page, advertising a K line (K3, P3, KPA500) as a 600W station - am I going nut's or have they decided that 100W from the K3 plus 500W from the KPA means you get 600W out?

73 de David, M0XDF (K3 #174, P3 #108)

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom. -Isaac Asimov, scientist and writer (1920-1992)

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[Vic Rosenthal]

While the KPA500 is rated at 500W I believe that in practice it can
deliver up to 600W. Unlike some manufacturers, Elecraft is conservative
in its power ratings.

On 18 Feb 2015 13:05, David Ferrington, M0XDF wrote:

> Slightly off-topic, but I've opened up my March RadCom, to find a W&S
> add on the inside back page, advertising a K line (K3, P3, KPA500) as
> a 600W station - am I going nut's or have they decided that 100W from
> the K3 plus 500W from the KPA means you get 600W out?
>
> 73 de David, M0XDF (K3 #174, P3 #108)
>
> The saddest aspect of life right now is that science gathers
> knowledge faster than society gathers wisdom. -Isaac Asimov,
> scientist and writer (1920-1992)

--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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[Scott Manthe-2]

My KPA500 will put out 600 watts with ease, 680-700 on some bands. I've
never pushed that hard, although I routinely run it at 550-575, so maybe
they're not fudging things too much.

73,
Scott, N9AA


On 2/18/15 6:05 AM, David Ferrington, M0XDF wrote:

> Slightly off-topic, but I've opened up my March RadCom, to find a W&S add on the inside back page, advertising a K line (K3, P3, KPA500) as a 600W station - am I going nut's or have they decided that 100W from the K3 plus 500W from the KPA means you get 600W out?
>
> 73 de David, M0XDF (K3 #174, P3 #108)
>
> The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom. -Isaac Asimov, scientist and writer (1920-1992)
>
> ______________________________________________________________
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> .
>

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[M0XDF]

OK, I hadn't realised it was that much over-spec'd - which is good - not for us Brits of course, with an upper limit of 400W :-(

73 de David, M0XDF (K3 #174, P3 #108)

Thank everyone who calls out your faults, your anger, your impatience, your egotism; do this consciously, voluntarily.
-Jean Toomer, poet and novelist (1894-1967)

> On 18 Feb 2015, at 13:09, Scott Manthe <[hidden email]> wrote:
>
> My KPA500 will put out 600 watts with ease, 680-700 on some bands. I've never pushed that hard, although I routinely run it at 550-575, so maybe they're not fudging things too much.
>
> 73,
> Scott, N9AA
>
>
> On 2/18/15 6:05 AM, David Ferrington, M0XDF wrote:
>> Slightly off-topic, but I've opened up my March RadCom, to find a W&S add on the inside back page, advertising a K line (K3, P3, KPA500) as a 600W station - am I going nut's or have they decided that 100W from the K3 plus 500W from the KPA means you get 600W out?
>>
>> 73 de David, M0XDF (K3 #174, P3 #108)
>>
>> The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom. -Isaac Asimov, scientist and writer (1920-1992)
>>
>> ______________________________________________________________
>> 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
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>
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> Please help support this email list: http://www.qsl.net/donate.html
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[Ignacy]

One issue with solid state amps is that IMD increases rapidly well before the saturation point. Probably most 100W rigs can be cranked up to 150W but with bad IMD especially into some loads. So 700W saturated may mean 500W linear.

The maximum semi-linear power can be easily found by measuring  1db or 2db compression point. My Expert 2k-fa can easily deliver > 2 KW peak but the compression point is around 1500W.

Ignacy, NO9E