[Elecraft] AM power for KPA500

Grant Youngman nq5t at tx.rr.com
Thu Apr 14 11:53:32 EDT 2011


Always helps to include text ... :-)

My Ranger won't quite make 375w carrier. Do I have a problem?  ;-)

I think the Elecraft amp will make 150w carrier. Hardly a big difference.  But enough for a good time anyway. 

Not all Desks or KW-1s or similar transmitters are throttled back. Unless it's to drive a 4CX15000 or something :-$

Sent from my iPhone

On Apr 14, 2011, at 10:45 AM, Grant Youngman <nq5t at tx.rr.com> wrote:

> 
> 
> Sent from my iPhone
> 
> On Apr 14, 2011, at 10:41 AM, Guy Olinger K2AV <olinger at bellsouth.net> wrote:
> 
>> That will be the same ratio as always, set by physics instead of the
>> manufacturer: carrier set for one quarter of the PEP rating.  That
>> would be 125 watts carrier for 500 watts PEP.
>> 
>> It always seems to be too small.
>> 
>> In the old days of the Johnson desk kilowatt, that was 1 kW carrier
>> INPUT, with a usual 700 to 750 watts carrier output.  With voice
>> processing, that was a well modulated 3kW PEP output.  There was a
>> reason those guys always sounded so loud, and for how heavy that rig
>> was.
>> 
>> My AL1200 needs about 30 watts carrier to transmit the max 375 watts
>> carrier.  Just about what my Ranger will do.
>> 
>> 73, Guy
>> 
>> 
>> 
>> 
>> 
>> On Thu, Apr 14, 2011 at 10:15 AM, Stephen Victor <victorsj at yahoo.com> wrote:
>>> Hi.  What carrier power will the KPA500 put out for well modulated AM?
>>> 
>>> 
>>> Thanks and 73
>>> Steve WA2DTW
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