[Heathkit] Heathkit List

[Ron Youvan]

>   I butcher them and re-build some of the circuits, basically 
> I use them for a platform to learn from.  They were built in such
> a way that they lend themselves to some degree of modularity where I can 
> work on one stage at a time.  Primarily I have been messing

> with the SB-303 and SB-401.  I bought two of each on ebay, ones that 
> no-one wanted because they were pretty rough looking. 

   The Heath designs clearly had flaws (flame proof suit on) and the SB300 has a PIP.
The first mixer employs a "plate mixer", but there is no such thing as a
"plate mixer."  (and as a result 15 and 10 meters are a no-go)
   I removed the tiny capacitor on the band switch and the wire from the
oscillator to it, then I fed the cathode of the first mixer from the cathode
of the oscillator with a thin shielded cable. (also the rear panel connector
when used as a transceiver) Now 15 and 10 meters sing.
-- 
   Ron  KA4INM - Youvan's corollary:
                 Every action results in unwanted side effects.