Hi > On Feb 27, 2021, at 9:38 PM, paul swed <[email protected]> wrote: > > Well some progress actually made. Ripped the oscillator out of the assembly > and removed the rest of the material surrounding everything. Now have a > schematic at least 90% correct. Part of the issue seems to be rotting > solder joints. After fixing those the unit appears to be on frequency at 5 > MHz and stable. More reassembly has to happen and hard to say what > additional issues will show up. But that is progress in the right direction. > The actual oscillator is a 2n914 npn transistor in a Pierce configuration. > The output feeds an IC amplifier. Guessing a differential amp but the part > number doesn't show up in any search.
In that era, I’d bet it’s some sort of transistor array. Bob > Regards > Paul > WB8TSL > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
