[time-nuts] Re: NTP server source needed

FWIW, I have experience with the LeoNTP, TM1000A and TM2000A. The LeoNTP is a very solid NTP server. Highly consistent service, with extraordinary low variance assuming the display is left on the default time screen (other screens negatively impact variance). Standard deviation reported by

[time-nuts] Re: NTP servers

Strange. I have three of these that I have tracked pretty closely for several years. To my knowledge, I’ve never experienced any circumstance in which they were off by one or more seconds. Regarding the holdover behavior, I have not tested that. But if you believe that the current behavior

[time-nuts] Re: NTP servers

Well, someone snatched that up quick. > On Nov 21, 2021, at 19:11, Denny Page via time-nuts > wrote: > > Highly recommend the LeoNTP. If you are in the US, there is still one in > stock here: > > https://v3.airspy.us/product/upu-leontp/ > > Denny > >&

Re: [time-nuts] GPS Antenna Splitter

I use an 8 port splitter from GPS Networking. There is a 4 port variant: https://www.gpsnetworking.com/products/aldcbs1x4 With the hi isolation option (highly recommended :) and external power, it is $650. The 8 port version is $1100. Not

Re: [time-nuts] GPS Antennas

ote: > > Or a mfg. defect and thus why on the surplus market. > > -=Bryan=- > > > From: time-nuts on behalf of Denny Page > via time-nuts > Sent: August 29, 2019 7:39 PM > To: Discussion of precise time and frequency measurement > &g

Re: [time-nuts] GPS Antennas

I think several people have run into that issue, including myself. It seems designed for a slightly tapered rod. Easy to fix with the right tool. Denny > On Aug 29, 2019, at 16:41, Ben Hall wrote: > > Only issue with mine was that the thread wasn't fully cut, so I modified an > old taper

Re: [time-nuts] Rooftop antenna and splitter

Hi David, No, no ground plane. Don’t really have a lot of room for that in the window. Out of curiosity, how large of an impact have you found with a ground plane? Btw, I love the pan! Denny > On Apr 30, 2019, at 00:34, David J Taylor via time-nuts > wrote: > > Agreed with Dana's

Re: [time-nuts] Rooftop antenna and splitter

s for GPS timing. > > Also, it's possible that the two receivers with their antennas in such close > proximity might have been interfering with each other. > > Dana > > > On Mon, Apr 29, 2019 at 8:07 PM Denny Page via time-nuts < > time-nuts@lists.febo.com> wrote: > >

Re: [time-nuts] Rooftop antenna and splitter

I don’t seem to be able to attach the pics to the emails correctly to allow the mailing list software to process them. Rather than bombard everyone with any more attempts, I put them up on Dropbox. You can find the pics here: https://www.dropbox.com/sh/fbbfuydqac5qqql/AAADkwrcVL8u5nkHvi8ecMe3a

Re: [time-nuts] Rooftop antenna and splitter

[Resend—hopefully pics come through this time] One additional interesting thing which I didn’t anticipate is the effect of moving from multiple (puck) antennas to a single antenna. The graph below shows the relationship between two LeoNTP units in the local network as perceived by chrony. The

Re: [time-nuts] Rooftop antenna and splitter

[Resend—hopefully pics come through this time] Thanks Bob, this is in fact what I ended up doing. I bought a pair of the L1 / L2 / L5 antennas from China, one for rooftop mounting at the new site, and one for testing. I paired it with a splitter from GPS Networking. 35 feet of RG-213 from the

Re: [time-nuts] Rooftop antenna and splitter

Thanks Bob, this is in fact what I ended up doing. I bought a pair of the L1 / L2 / L5 antennas from China, one for rooftop mounting at the new site, and one for testing. I paired it with a splitter from GPS Networking. 35 feet of RG-213 from the antenna to the splitter, and 3 feet of rg-58

Re: [time-nuts] Rooftop antenna and splitter

One additional interesting thing which I didn’t anticipate is the effect of moving from multiple (puck) antennas to a single antenna. The graph below shows the relationship between two LeoNTP units in the local network as perceived by chrony. The system clock is synced to the first LeoNTP

Re: [time-nuts] Rooftop antenna and splitter

Thanks Mark. For the cost, this seems like a worthwhile thing to try. I don’t think the homeowners association would be too thrilled about a pizza pan on a pole so I’ll probably have to do without. Besides, If I mounted a pizza pan I would also endure endless teasing from from my wife who

Re: [time-nuts] Rooftop antenna and splitter

> On Jan 27, 2019, at 05:28, Bob kb8tq wrote: > > With things like the uBlox F9 now out on the market cheap …. I would go with > an antenna that will do L1 / L2 / L5 and work with everything that it up > there. Like these?

[time-nuts] Rooftop antenna and splitter

Hi all, I’m looking for recommendations on an antenna / splitter configuration. I currently have six GPS/GLONASS/Galileo timing devices, each with it’s own puck antenna in a window. I have an opportunity to move to a (single) roof top antenna, with a splitter to feed the individual devices,