Hi If the device pulls > 50 ppm at 80 MHz, it’s a wide range VCXO with a heater on it :) That is way more than you can pull a proper (low ADEV) OCXO.
Bob > On Nov 13, 2017, at 5:04 AM, Mark Goldberg <marklgoldb...@gmail.com> wrote: > > On Sun, Nov 12, 2017 at 7:02 PM, Mark Goldberg <marklgoldb...@gmail.com> > wrote: > >> >> On Sun, Nov 12, 2017 at 6:38 PM, John Miles <j...@miles.io> wrote: >> >>> >>> Most of the 100 and 200 MHz bricks I've seen work with either 5 or 10 MHz >>> . I don't know if I've seen any 80 MHz units that do. All of the ones >>> I've bought on eBay have been from the customer-proprietary 500- series >>> with unusual input frequencies. >>> >>> >> I swept the input from 1 to 100 MHz. They lock at 38.4 MHz in. Yes they >> are 4-5 kHz off when free running. Locked they are right on frequency. >> >> Mark >> >> > I have one more question. Does anyone know if when unlocked it is possible > to apply a tuning voltage to the Phase Lock Voltage monitor pin? What good > is it to have an OCXO that needs to lock to a external frequency and is 4 > kHz off when unlocked? When locked, it comes up on frequency from first > power on, so why would an oven be needed at all? > > If interested, take a look at my qrz.com page for links as to why I am > doing this. I have fallen down the rabbit hole of more accurate frequency! > > Thanks, > > Mark > W7MLG > _______________________________________________ > 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.