[Amps] Multi-Amp w/ Power Combiners

[Bill Fuqua]

  years ago there was an article in QST I believe, using a pair of Heathkit 
compact kilowatt amplifiers using
coax combiners and splitters.
   73
Bill wa4lav



At 02:30 PM 8/23/2012 +0200, peter chadwick wrote:
>How do you ensure phase matching between the amplifiers?
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>========================================
>Message Received: Aug 23 2012, 01:16 PM
>From: "Sam Carpenter"
>To: amps at contesting.com
>Cc:
>Subject: [Amps] Multi-Amp w/ Power Combiners
>
>I have often thought of why I do not see the running of multiple HF Tube
>amps with power combining networks. It would seem that the overall cost of
>using more than one smaller amplifier would be a net savings because of the
>relatively low cost of building medium power amps. It seems like a
>reasonable way to build a lot of power and spread the stress of a system out
>a bit to lower priced components. It also partially eliminates the single
>point of failure to take all the power down with a single glitch. I
>understand that frequency agility would be more cumbersome and time
>consuming, but in many applications, you don't move much. Neither input nor
>output combining is complicated so long as you are staying fairly put with
>regard to frequency. Does anybody do this outside of broadcasting and
>commercial? N9FUT
>
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