[Amps] 3dB Hybrid coupler

[GM3SEK]

Werner Hasemann wrote:
> Hi, I would like to couple 2 equal 70cm-amplifiers together and need at
> least two hybrid couplers, which are able to transfer 200wtts pep on each
> arm. Where can I get those parts ? Is there any chance to build them ?

Yes, you can build 'rat-race' couplers with coax:
KL7WE, Combining Amps for High Power, Central States VHF Convention 
1988, p149.

It doesn't seem to be on the web, but I will be able to supply a copy if 
you e-mail to remind me in about 2 weeks time.



73 from
Ian GM3SEK