[Elecraft] new KPA 500 question

[Phil Hystad]

I agree, the path is clear -- it is obvious --- sell the Commander as 5 to 7 dB is not worth having extra stuff around to fool with.  As said by a person with a growing interest and desire for QRP contacts.

73, phil, K7PEH


On Dec 18, 2012, at 12:28 PM, "hawley, charles j jr" <c-hawley at illinois.edu> wrote:

> If you are 20db over S9 with the KPA500, you can be 25 to 27db over S9 with the Commander in line. The path is clear...
> 
> Sent from my iPad
> Chuck, KE9UW 
> (Jack for BMW motorcycles)
> 
> On Dec 18, 2012, at 11:45 AM, "Bruce McLaughlin" <bmclaugh at bex.net> wrote:
> 
>> I finally succumbed to temptation and ordered a KPA 500 which will arrive
>> tomorrow.  This may be a question that can't be answered on this reflector
>> but I thought I would try.  I have an HF 2500 Commander, the Palstar
>> version, which I have been using with the k3 and other radios.  I am not
>> sure about how I will integrate the KPA 500 into the station.  I have been
>> switching between three different radios and the Commander amplifier using a
>> coax switch to switch the output of the various radios to the input of the
>> Commander.  I have been thinking about pulling the output of the k3, running
>> it through the KPA 500 and then running the output of the KPA 500 to the
>> coax switch.  With that arrangement the switching would be exactly the same
>> as before.
>> 
>> However, I am a little concerned about running 500 Watts into the input Of
>> the Commander even when that amplifier is turned off.  I am wondering
>> whether that might damage the input circuits Of the Commander.  Does anyone
>> have any suggestions.  I should mention That the Commander works just fine
>> with all of the radios but I wanted to complete the K line and experience
>> integrated, completely automatic operation.  The lower power from the KPA
>> 500 should not make any significant difference for most contacts.  I would
>> appreciate any thoughts on the subject.
>> 
>> Bruce-W8FU
>> 
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