>Hi jim,
>I wouldn't do 'air' combining, as you invariably will find dead spots
>in the overall radiation pattern, due to proximity effects of objects
>to each antenna, etc. Also it is expensive and takes real estate.
>
>Use a combiner. Build or buy one. (ARRL and Orr handbooks cover
>them). Just be careful if one amp craps out or gets weak or shifts
>phase, that there is a way to protect the other one. In other words,
>either have isolation in the combiner, or have protective circuits
>like VSWR trip on each amp.
** Or -- build a tetrode-with-handles 20db amplifier. I see 8171s
going for under $300 on eBay. Svetlana makes sockets.
>
>73
>John
>K5PRO
>(still reviving the Johnson 500).
>
>
>At 9:07 AM -0500 1/20/04, amps-request@contesting.com wrote:
>>Hello fellow amp gurus- I have a question for the experts. I have two TE
>>systems 350 watt 2 meter solid state amplifiers and wanted to combine the
two.
>>What is the best way of doing this? Should I use a power combiner?
>>Should I run
>>each amp into a seperate antenna with equal feedline lengths while
>>driving both
>>with the exciter simultaneously? Any other ideas, suggestions? Thanks for
>>any and all input.
>>
>>73,
>>Jim
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