Paul, The Zeeman frequency you use depends on what synthesizer frequency your unit is set for. Either 48.82Khz or 53.53Khz. See: https://www.febo.com/pipermail/time-nuts/2008-July/032378.html The Zeeman coil is close to a short. You set the amplitude to the spot that gives you the best look at the peaks. Adjust the C-field to land on the central peak. Cheers, Corby

Thanks Corby. Well didn't find the zeeman peaks but using a GPSDO it was very apparent what the peaks are. Its now set and the real issue is that the base unit was a option 004 now with a standard tube in it. Changing the C field resistor moved it into the correct offset range. 300 ohms down to 235 ohms for a standard tube per the manual. I did swap the synthesizer module but I do not believe thats actually an issue. Regards Paul WB8TSL On Sat, Feb 25, 2017 at 12:32 PM, <cdelect@juno.com> wrote: > Paul, > > The Zeeman frequency you use depends on what synthesizer frequency your > unit is set for. > > Either 48.82Khz or 53.53Khz. > > See: https://www.febo.com/pipermail/time-nuts/2008-July/032378.html > > The Zeeman coil is close to a short. You set the amplitude to the spot > that gives you the best look at the peaks. > > Adjust the C-field to land on the central peak. > > Cheers, > > Corby > > _______________________________________________ > 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. >