On 22 October 2016 at 17:22, Chris Albertson <albertson.ch...@gmail.com> wrote:
> > You have to remember what this thing replaces. In ham radio, some people > are using vacuum tube oscillators with mechanical variable capacitor > tuning. Maybe some advanced rigs use gear drive on the capacitor shaft to > allow more exact tuning This Si chip is considerably better then 1940's > technology. > Well, as someone else pointed out, hams are not using this sort of thing now - or at least not in any significant numbers. I recently bought a "new" 2 m transceiver - which is actually a 40 year old Yaesu FT-225RD. When fitted with a Mutek front end (GW4DGU), they were arguably the best 2 m transceiver ever made. Mine drifts quite a bit, and I need to look into why. It can be two things * Crystal - 100 and odd MHz * VFO - around 8 MHz I heard of someone replacing the VFO with a cheap Chinese DDS as an "upgrade". Actually, I suspect it was probably a downgrade, as I would expect the VFO to be a lot cleaner. I've not taken it apart to fix mine, but from what I have read, it would appear the crystal is the main source of drift, and not the VFO. A frequency counter will soon determine if that's the case in mine. Dave _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.