[CQ-Contest] Pre tuned Hf amps

Doug Smith W9WI w9wi at earthlink.net
Mon Sep 25 12:41:20 EDT 2006

On Sun, 2006-09-24 at 22:15, peter.voelpel wrote:
> We do that as well at DF0CG/DR1A.
> One 20KVA supply for amps with 2xQB5/1750, similar to 4-400A but a bit
> bigger (500W dissipation). 

K4VX also uses monoband amps, though with separate power supplies.  One
problem with the single-supply design is that a single failure puts
*all* bands on low power, not just one band.  (and with separate
supplies, if you have a failure on one supply/band you can use an
off-the-shelf commercial amp to fill in.  With a single supply, you need

ISTR W0AIH also uses multiple monoband amps.
Doug Smith W9WI
Pleasant View (Nashville), TN  EM66

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