Hi
On Jun 28, 2013, at 9:45 AM, Jim Sanford <[email protected]> wrote: > All: > > My Z3801 no longer works, and I've not been able to get any new ideas on it, > so am looking for a replacement. > > I've come across a nice 10 MHz that has very good phase noise (-145db or so > at 10 KHz offset), but costs $175 in single quantities (digi-key, I think.) The OCXO in the TBolt is about -165 at 10 KHz > I was considering using one of W1GHz's boards to lock it to a jupter GPS > engine that I already have. Several people have told me this is overkill, > recommending the Thunderbolt. > > I've read that there are various OXCXs used in Thunderbolts, some OK, some > not so good. > > Looking on ebay right now, I see a Nortel Trimble NTBW50AA, a Symmetricom, > NTBW50AA, and another Nortel. > > Does anybody have experience with these? Yes > I'm particularly interested in the best phase noise I can get. Spurs are what will kill you. Phase noise is about 10 db worse than the TBolt far removed. It's similar close in. > This will be station master frequency reference, and will ultimately lock > stations up to 10 GHz. Simple answer is to run a clean up oscillator at 100 MHz and then go from there. None of the GPSDO's have low enough spurs to really do an excellent jobs at 10 GHz. Bob > > Thanks & 73, > Jim > [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.
