>
>
>Brian Moran wrote:
>>
>> I perused the ~19 meg archive for "power combiners" --
>> from my read, the suggestions were mixed for trying to
>> sum the outputs of two HF amps. Has anyone tried the
>> following?:
>>
>> Take two relatively-inexpensive amplifiers, say,
>> heathkit sb-220's. Make sure that they both work
>> reasonably well. With the hybrid combiner available
>> from CCI (make sure to use those resistors in case of
>> failure of one amp!), combine their outputs.
>>
>> Again, WITHOUT having done this, it seems to me that:
>>
>> With SB-220's at about $0.57 a watt (700 watts) or so
>> OUT (CW), $~400 recent prices used (conservatively))
>> they are seemingly inexpensive...
>>
>> Tuning would have to be done individually, then the
>> amps switched into the network.
>>
>> Has anyone tried this?
>> Brian, N9ADG
>>
>
>
>Why not rebuild the SB220's use the two transformers in parallel and 4 tubes
>in parallel ???? Power supply in one box, RF deck in the other.....
>
*** Why not buy a tetrode with handles from Svetlana, build an ugly
amplifier, and obtain 6x more P with half the drive?
>Art
>KB7WW
>
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Rich, AG6K, 805-386-3734, www.somis.org / new e-mail adr r@somis.org
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