Monday, January 18, 2010

Ramsey QRP80C mept conversion update

Keying as originally designed, was a no no, since with both inductors installed, no stable oscillation was obtained at all.
The removal of one of the inductor resulted in stable oscillation but sluggish keying. Tuning range at this stage was about 5kHz.
The only radio-activity I showed today was to remove the second and last inductor of the oscillator. The tuning range is now down to 1kHz, keying is instantaneous.

Up to now I only made use of parts supplied.