Hi The GPSDO is the one I mentioned earlier. Here's a completed listing:
http://www.ebay.com/itm/Symmetricom-Nortel-NTBW50AA-12-Ch-GPS-Timing-Module-10MHz-GPSDO-Furuno-GT-8031F-/300909808907?pt=LH_DefaultDomain_0&hash=item460f9f4d0b They come up from time to time. It's not one of mine. I've bought stuff from the same seller. Bob On Jun 2, 2013, at 4:32 PM, Andy Bardagjy <[email protected]> wrote: > Bob, are you referring to a particular GPSDO (for $120)? Which is it? Can > you provide a link? > > Andy Bardagjy > bardagjy.com > > > On Sun, Jun 2, 2013 at 4:30 PM, Bob Camp <[email protected]> wrote: > >> Hi >> >> Far cheaper to spend the $120 on the GPSDO that does the 9.8304 to 10 MHz >> conversion than to send the Rb back to the factory. >> >> Bob >> >> On Jun 2, 2013, at 4:24 PM, Ed Palmer <[email protected]> wrote: >> >>> Glutton for punishment, aren't you Mark! :) >>> >>> There's probably no way to get to 10 MHz. I have two of these that I >> picked up just to play with. Another purchaser contacted Symmetricom and >> actually got some information out of them. The oscillator in these runs at >> 58.9824 MHz. The default output is 9.8304 MHz. The output can be changed, >> but only in submultiples of the 58.98 MHz. e.g. 58.98 divided by 6 equals >> 9.8304. You can change the '6' to various integers as documented in the >> manual. >>> >>> To move the output to 10 MHz you'd have to change the crystal back to >> the standard 60 MHz so that you could divide it by 6. But then you'd mess >> up the multiplier that takes the crystal frequency up to the Rb frequency. >> You'd have to change the synthesizer that controls that side of the >> system. There's no way to tell if that would require a completely new >> firmware load or if, just maybe, there could be an undocumented (maybe >> protected) command to modify it. You might be able to send it back to >> Symmetricom to get it changed but, based on my experience, you couldn't >> afford it. >>> >>> Ed >>> >>> On 6/2/2013 11:52 AM, Mark C. Stephens wrote: >>>> These are 9.8304Mhz, is possible to move them to 10Mhz? >>>> >>>> >> http://www.ebay.com/itm/Symmetricom-SA-22c-9-8304MHz-Precision-Rubidium-Oscillator-5V-and-15V-NICE-/261223397404 >>>> >>>> >>>> -marki >>>> >>>> >>>> Kind Regards, >>>> Mark Stephens >>>> >>>> Mark Clemens Stephens | Customer service engineer | Non-Stop Computer >> Ltd >>>> * +61 2 9011 8186 | ( +61 428 256 334 | * [email protected]<mailto: >> [email protected]> >>>> >>>> Non-Stop Computer PTY LTD >>>> 79 Devon St >>>> North Epping >>>> NSW 2121 >>>> Australia >>>> Timezone: AEST (UTC +10) >>>> >>>> Email: [email protected]<mailto:[email protected]> >>> >>> _______________________________________________ >>> 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. >> >> _______________________________________________ >> 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. >> > _______________________________________________ > 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. _______________________________________________ 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.
