My experiences with the T'Bolt have not been entirely satisfactory. If I set the loop lime constant long enough to get a satisfying smoothing of the GPS noise (a few hundred seconds), then the thermal sensitivity of the VCXO on the T'Bolt rears its ugly head and I see a lot of my HVAC system cycling instead. The T'Bolt E supposedly has a double- oven XO, so I'd like to give that a try. But my wallet says "whoa"!
According to Bodnar, his units do have some choices in the time constant setting. I've been considering ordering a Bodnar just for frequency agility, but have been holding off out of concern for the complications of dealing with a foreign supplier. Dana On Tue, Jul 20, 2021 at 12:42 PM John Ackermann <j...@febo.com> wrote: > The Bodnar GPSDO is great for what it is, and has the great advantages of > small size, low power consumption, low cost, and frequency agility. But it > doesn't have an OCXO so its short term and holdover performance isn't in > the same league as the T'bolt or Z38whatever boxes. > > John > > On Jul 20, 2021, 1:11 PM, at 1:11 PM, Bob Darlington < > rdarling...@gmail.com> wrote: > >Same. He probably got 250+ requests in short order. I'm curious how > >the > >Leo Bodnar GPSDOs compare. I'm considering one of these over a > >thunderbolt for field use for ham radio EME work. > > > >-Bob N3XKB > > > >On Tue, Jul 20, 2021 at 10:59 AM Wes <w...@triconet.org> wrote: > > > >> I wrote Tom, at the address he gave, on Saturday with a query. So > >far, no > >> reply. > >> > >> Wes N7WS > >> > >> On 7/19/2021 4:59 PM, John Miles wrote: > >> > If you're looking for a low cost surplus GPSDO, the ones Tom > >mentioned in > >> > his post on Saturday are the ones you want. Not a Thunderbolt-E, > >and not > >> > something from the China surplus/e-waste market. > >> > > >> > -- john, KE5FX > >> > > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > >send > >> an email to time-nuts-le...@lists.febo.com > >> To unsubscribe, go to and follow the instructions there. > >_______________________________________________ > >time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > >send an email to time-nuts-le...@lists.febo.com > >To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send > an email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.