[Elecraft] KPA500 Combiner

[Phil Wheeler]

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
>
>