Thread: Eddystone dial
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Old April 2nd 06, 03:20 AM posted to rec.radio.amateur.homebrew
Dale Parfitt
 
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Default Eddystone dial and custom dial plates

Hi Don and Ted,
While it has been over a year now since I did the VFO- I too had some
difficulties with the QST values. In talking w/ W7ZOI, Wes indicated that
some errors had worked their way into the design over the years. One was on
the audio amp- values I had caused severe rolloff below about 2KHz- making
SSB very tinny.
The other was on the VFO. Because of the Eddystone dial, I wished to make
the VFO as linear as possible- book values led to a highly non linear scale.
I do not recall exactly what I did- although I played with the math for a
long time- to lienarize it- but I would trust your calcs.
At some point I will open her up again as I want to buffer the VFO and tap
off for a TX VFO- the plan is to build a Drake style reciter for the RX- and
at that time will better document the changes I made.

Dale W4OP