Hi If the boards all sat out in the same acid rain (or whatever) storm in a land far far away …. it may indeed be the boards. Of course, there *are* 50 db antennas out there … that’s a lot of gain ….
Bob > On Apr 10, 2019, at 8:08 PM, Taka Kamiya via time-nuts > <[email protected]> wrote: > > ..... and as soon as I typed that and sent it in, my GPS unlocked. Something > is very wrong here as I have 3 boards and they all have the same symptom. > More than likely the fault is mine, not the boards. > > --------------------------------------- > (Mr.) Taka Kamiya > I'm stuck in a wormhole.... Hello, worms! > > On Wednesday, April 10, 2019, 6:03:55 PM EDT, Taka Kamiya via time-nuts > <[email protected]> wrote: > > I have somewhat of a result. > > I rigged up an antenna outside. It has 360 degree view above 30 degrees > above horizon. (it's located at middle of my front yard). > Using 40dB antenna, lock was faster but it still lost sync every now and > then. RE-lock was faster as well. Then, I disconnected its power supply > (which is a switching power supply) and fed it from my lab supply. The power > is spec'd 0.5mv ripple. It locked about the same as above and lost it once > in few minutes. But once it relocked, it is staying locked. It's been > running 2 hours locked solid. It would have lost it few times by now. > So the issue likely is the power source. Yay! > > --------------------------------------- > (Mr.) Taka Kamiya > I'm stuck in a wormhole.... Hello, worms! > > On Wednesday, April 10, 2019, 11:00:34 AM EDT, Taka Kamiya via time-nuts > <[email protected]> wrote: > > It is going to take me few days to put up outside antenna. It is on-and-off > rainy in my area this week. Thanks for the pointer. I will report back once > I have a result. Thanks again. > > --------------------------------------- > (Mr.) Taka Kamiya > I'm stuck in a wormhole.... Hello, worms! > > On Wednesday, April 10, 2019, 2:27:42 AM EDT, Mark Goldberg > <[email protected]> wrote: > > I am using a Motorola / Pctel 8508851k66 / 3226MSMA that is supposed to be a > 26 dB gain antenna with an HP 58515A splitter that provides +3 dB +/- 3 dB. > It has a clear view of about 1/2 the sky. > Regards, > Mark > > On Tue, Apr 9, 2019 at 11:06 PM Taka Kamiya <[email protected]> wrote: > > I have a bullet type 26dB gain antenna in attic. It goes through hard-line > then into Symetricon 4 way splitter, and one of the port is connected to True > Position. My splitter has zero gain per port (ie. each port has exactly the > same level as the input) > I have on my plan to install 40dB type and do so outside. Maybe that's a > solution? I didn't think about this because all other GPDSO locks just fine. > > --------------------------------------- > (Mr.) Taka Kamiya > I'm stuck in a wormhole.... Hello, worms! > > On Wednesday, April 10, 2019, 1:30:42 AM EDT, Mark Goldberg > <[email protected]> wrote: > > What kind of antenna and where is it located? I have a trueposition and it > seems to need a higher gain antenna than my other gpsdo, a modern Bodnar. I > put it outside with an amplified splitter and it works well. > When using another antenna or this one on the windowsill, it went into > holdover fairly often. > Regards, > Mark > On Tue, Apr 9, 2019, 6:00 PM Taka Kamiya via time-nuts > <[email protected]> wrote: > > I have a few Tru-Position boards. This is an older older GPSDO board for > telecom industries. I am using this with LadyHeather. > > All hooked up, it locks and works; but, quite often Lady Heather shows the > red line in graph, showing it is unlocked. I have several GPSDO board here, > and for all others, antenna and signal strength are just fine. Ambient > temperatures are "human comfortable". > I am concerned with this frequent unlock. It happens few times a day and it > will eventually RE-locks. > Does anybody know what is happening? > > --------------------------------------- > (Mr.) Taka Kamiya > I'm stuck in a wormhole.... Hello, worms! > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
