[AMRadio] Re: AMRadio Digest, Vol 48, Issue 24


D. Chester k4kyv at charter.net
Wed Jan 16 04:46:50 EST 2008


> Two things seem to come to the surface in my dealings with the KW-1:
> the mod iron certainly can't be accused of being overbuilt and running
> it at 100% likely approaches its limits; and a quad of 6B4Gs instead
> of a pair would've worked better for driving it, especially at the
> 12,000 winding.
> ~ Todd,  KA1KAQ

You are right.  A pair of  6B4Gs is not sufficient to drive the 810 
modulators.  I use a pair of 810's in my homebrew xmtr, and drive them with 
a quad of 2A3's, which are equivalent to 6B4G's.  A pair of 845's would be 
better still.

Don k4kyv 



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