[Elecraft] KPA500 Combiner

[Dick Dievendorff]

I find a StackMatch appropriate for that.

73 de Dick, K6KR


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Phil Wheeler
Sent: Monday, March 03, 2014 10:13 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KPA500 Combiner

Or you could run the outputs to separate antennas for some really
interesting results :-)

Phil, w7ox

On 3/3/14, 9:39 AM, Vic Rosenthal K2VCO wrote:
> My thought is that connecting two standalone amplifiers, each with its 
> own protective circuits, bias supplies, etc. with a combiner is kludgy 
> and likely to lead to problems.
>
> Now the KPA1500 prototype -- that was neat.
>
> On 3/3/2014 9:33 AM, David Gilbert wrote:
>>
>> I really don't find those kinds of
>> generalizations very constructive ...
>> or accurate.  LOTS of hams live where putting up an additional 
>> kilobuck worth of aluminum is out of the question due to space or 
>> neighborhood or
>> aesthetic considerations.   An extra 3 db of 
>> transmit power can make a
>> noticeable difference for them without violating those other 
>> considerations, especially if their local noise levels are low on 
>> receive.  Whether that is worth $1K to them will vary from ham to 
>> ham.
>>
>> Besides, for many hams who already have decent antennas on a decent 
>> tower, it would probably take considerably more than $1K to get that 
>> extra 3 db out of more aluminum.
>>
>> Lastly, if you don't think an extra 3 db can represent a significant 
>> improvement on HF, check out http://www.ab7e.com/weak_signal/mdd.html
>> Anybody who is an active contester or DXer on HF will often find that 
>> extra 3 db useful in a pileup.
>>
>> 73,
>> Dave   AB7E
>
>

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