[time-nuts] WTB: Oscilloquartz 8607, 8600 or similar OCXO

Andreas Tschammer asensio at datelsoft.de
Sat Jun 7 17:26:29 EDT 2008


I am looking for a high quality reference oscillator (5 MHz or 10 MHz) for a stability tester.
No success until now on _bay, so I try my luck here..

I intend to copy the system described in http://tycho.usno.navy.mil/ptti/ptti2002/paper32.pdf
for one measurement channel. I was able to buy a 6160B synthesizer at  _bay for a good price for
the offset generation. After some extended repair sessions on this one I did a test of the phase stability
of the synthesizer by mixing the 5 MHz reference signal with the 5 MHz output of the synth. After determination
of the phase sensitivity of the mixer close to 90 deg phase shift I collected 10000 s of phase data with
a Schlumberger 7150plus. The 1s Allan Deviation is 1E-13 and the 1000s 4E-15 (calculated with Ulrich' s fine plotter
utility) which seems to be quite promising. The cabling and the ceramic coupling capacitors are pretty sensitive to temperature
changes in this quick and dirty setup.

Andreas, DL2KCL

More information about the time-nuts mailing list