Could also be worth considering the C-MAC STP 2055B DOCXOs being sold out of China at the moment ( http://www.ebay.com/itm/170471367031 ). Out of 14 units that I bought, three were excessively noisy and/or jumpy, eight were good for <= 2E-12 at t=1s, and three were exceptional performers <= 3E-13 at t=1s. As with the Morion DOCXOs, their retrace, environmental sensitivity, and long-term stability characteristics are outstanding.
Their broadband floor is around -155, a bit quieter than the MV89As. Otherwise they're pretty similar, and he seems to have a large quantity of them. Unfortunately they won't plug directly into the Trimble PCB, as they have some threaded mounting studs and an extra pin for a CMOS-level warmup signal. They could be modified or adapted without much trouble. -- john, KE5FX Miles Design LLC > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Bob Camp > Sent: Tuesday, May 28, 2013 9:52 AM > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] Thunderbolt MV-89a OCXO Transplant? > > Hi > > The MV89A is a 5 MHz resonator doubled to 10 MHz, it will have sub harmonics > that the original OCXO (using a 10 MHz resonator) does not have... _______________________________________________ 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.
