Re: The Best GDO Ever Made?
I may have spoken too soon; that AN-PMR10 is a bit different. The tuning capacitors are linked via gear wheels to a pot which changes the valve bias according to frequency. The bias circuit also incorporates different resistors inside the plug in-coil assemblies.
Cloning that gear wheel arrangement could be tricky. I traded in my Mecanno set some time ago. Alternatively, losing the tuning capacitor and replacing it with a dual gang pot, with one section driving two varicap diodes for the RF tuning and the other section adjusting the bias could offer 'hours of fun'?
B
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