[amsat-bb] UHF amps

Jim White jim at coloradosatellite.com
Sun Nov 25 23:24:47 UTC 2018


I'm looking for suggestions on UHF power amps.  One of my stations uses 
a 10mw output SDR with a 2W gain block after it on TX.  Right now I'm 
driving the 2W into a MIRAGE D26 to about 35W. I'd like to have about 
100W.  As I look at the various amateur power amps I'm not finding 
anything with 2W in and 100ish out.  I could add some attenuation to the 
SDR/2W amp string and get the D26 output down to perhaps 20W to drive 
another power amp but that's not desirable because two amps in series 
creates a few problems.

I can find Minicircuits gain blocks that would get me to perhaps 10W, in 
place of the 2W gain block, then drive something like a D1010 but those 
are a bit steep at >$1,000....

So any ideas on how to get the SDR 10mw output up to about 100W would be 
appreciated.

Jim





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