Hello Murray, no problem :) just wanted to make sure folks know that there are options below 5W out there. I am impressed with your 50mW TCXO unit. We've been thinking about offering DIP14 TCXO's as well on the FireFly. That would allow for true battery operation. We are also testing extremely low power (~120mW) OCXO's, with the heating elements integrated into the Crystal Blank itself, but I am not happy with the stability of these just yet. We also have a Fury GPSDO wired up to the Agilent E1938A - while it's the best Fury I have it's a real power hog. In fact I am having a hard time finding a power supply capable of delivering sufficient warmup current to that box.. bye, Said In a message dated 7/28/2008 11:33:44 Pacific Daylight Time, [EMAIL PROTECTED] writes:
Jack, I didn't claim that the Trimble NTGS50AA was the "lowest power GPSDO". Those are your words. I simply said it was "at the other extreme", meaning (although not said) at the other extreme of my limited experience of about 10 different models. I own only five commercial GPSDOs (HP Z3801A; Symmetricom Z3815A with MTI 260 OCXO; CIC GPSR-A and Samsung GCRU-D with Rakon CFPO-2 OCXO; and the Trimble NTGS50AA), plus a working relationship with the Datum and Symmetricom units at work and a previously owned HP Z3815A with E1938A OCXO. I've also built a few, but not in the class of the commercial units. My lowest power one is battery operated (uses a V-TCXO) and has a power consumption of 50mW (with display backlight off!), but is more affected by sun load than is desirable. Another uses the HP 10811A OCXO, and can hardly be classed as low power. I have a professional interest in achieving low power in the GPSDO, as the company I work for are part of the Femtocell working group. I am certainly impressed that the Firefly is down at 1.35W. Regards, Murray Greenman **************Get fantasy football with free live scoring. Sign up for FanHouse Fantasy Football today. (http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020) _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
