[Elecraft] new KPA 500 question

[Tom H Childers]

I disconnected my Alpha 87A when I got the KPA500.  Working DX
doesn't seem any more difficult after learning to watch the pile-up
with the P3, but I don't use SSB, where one might notice a
difference.

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

On Tue, 18 Dec 2012 12:31:11 -0800, Phil Hystad <phystad at mac.com>
wrote:

>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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73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member