To ease the requirements on your crystal, you might consider using a diode frequency multiplier to bring your oscillator frequency into that range. Wenzel has a good app note on one variety:
http://www.wenzel.com/documents/2diomult.html --n On Thu, 2010-09-30 at 18:57 +0000, Mark Sims wrote: > I need to build some small tracking transmitters (using a circuit similar to > http://www.jbgizmo.com/page4.html > > This circuit uses a fifth overtone crystal to get an output in the 216 to 220 > MHz range. The circuit is rather finicky about the crystal and transistor... > most don't work. > > Smaller and more rugged crystals are preferred. Does anybody know of a place > that can make 1 off crystals in this range for a reasonable price. Many of > usual suspects don't seem to be able to make crystals in that range. > > > _______________________________________________ > 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. _______________________________________________ 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.
