That was the problem with the Hamtronics stuff. Trimmer caps were problematic. I had one of their exciters for 6-meters "way back when" and you couldn't keep it aligned to save yourself, besides the fact that it sounded like crap on the air.
Chuck WB2EDV ----- Original Message ----- From: "Kevin Custer" <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Thursday, November 27, 2003 11:34 AM Subject: Re: [Repeater-Builder] Re: Spectrum Communications, and other stability comments. In the case of the Spectrum and other inferior > brands, the values for inductance and the range of the variable > capacitor allows for a very wide tuning range, but as agreed, at the > expense of stability. If a circuit needs 50 pF of capacitance to > resonate in the middle of the desired range, GE might have used a 40 pF > fixed silvered mica and a 20 pF variable, where Spectrum simply used a > 15 to 60 pF variable by itself. > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
