Don wrote: > Check your transistor numbers. K1 Q1 is a 2N7000 FET and not a 2N4124. > The ZVN4424 goes in the T-R switch at location Q4.
Stan was referring to Q1 on the front panel board, which is the frequency counter amplifier, 2N4124. This could cause the problem as described, so I would hold off on a wholesale rework of the VFO circuitry until the frequency counter sensing path is repaired. The VFO itself may likely be operating properly, but just not being sensed by the FP-MPU. In that case, the VFO signal should be able to be heard in a receiver covering about 2.9 to 3.1 MHz (for 170 kHz VFO span). Lacking a receiver, the filter board should be able to be peaked to where static and signals are heard...one just won't know what the exact frequency is until FP-Q1 is fixed. 73, Mike / KK5F ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
