[Johnson] Rebuilding Johnson Navigator ???
Freeberg, Scott (STP)
Scott.Freeberg at guidant.com
Wed Jan 24 17:38:07 EST 2007
I seem to recall someone actually measuring frequency drift with the 18K current limit resistor both in and out of the VFO compartment. I recall the same thing as Glen that the data suggested the vfo was more stable with the resistor left in the compartment.
When I replaced my 18K resistor back in 1997 or so, after it burned out and took out several tubes, I moved it out of the VFO compartment. If I were doing it today, I'd just replace the resistor and leave it in the compartment because I don't think its a big deal either way. While the Valiant has the resistor outside of the vfo compartment, my Rangers have it inside, and I don't notice any difference.
73, Scott WA9WFA
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