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GPS Receiver for uMPX
https://forums.stereotool.com/viewtopic.php?f=6&t=27201
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Author:  radiosean [ Mon Oct 21, 2019 2:13 am ]
Post subject:  GPS Receiver for uMPX

Is there a particular GPS receiver you recommend for uMPX to sync SFN signals? How should it be connected to the PC....serial, USB or some other way? Thanks!

Author:  hvz [ Wed Oct 23, 2019 5:05 pm ]
Post subject:  Re: GPS Receiver for uMPX

Hi, we have made special boxes that you can use to put in between (it's a pretty complex thing to solder yourself). Just USB isn't enough because the jitter on USB is about 10 ms (0.01 second) and we need pulses with a precision of less a microsecond (0.000001 second).

The first of these boxes are now at several stations where they will be tested. Once we have confirmation that everything works as it should in the field we'll start selling them, and also start selling MicroMPX SFN licenses.


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Author:  radiosean [ Wed Oct 23, 2019 9:03 pm ]
Post subject:  Re: GPS Receiver for uMPX

Thanks Hans! Looking forward to implementing this on our Las Vegas station.

Author:  hvz [ Wed Nov 20, 2019 4:17 pm ]
Post subject:  Re: GPS Receiver for uMPX

So far everything seems to be working well. In a test in Finland, a small transmitter was placed in an area with bad reception and they noticed no interference at all (in fact, people were originally doubting whether the transmitter was really switched on).

I'll verify once more that everything is ok. Then we should be able to start selling these pretty soon. :)

Author:  livewireaus [ Tue Apr 14, 2020 3:21 am ]
Post subject:  Re: GPS Receiver for uMPX

Quote:
So far everything seems to be working well. In a test in Finland, a small transmitter was placed in an area with bad reception and they noticed no interference at all (in fact, people were originally doubting whether the transmitter was really switched on).

I'll verify once more that everything is ok. Then we should be able to start selling these pretty soon. :)
Hi Hans

Just wondering if this testing went to plan and if you are any closer now to have the units available for purchasing?

Thanks!

Rossco

Author:  hvz [ Mon May 18, 2020 6:44 pm ]
Post subject:  Re: GPS Receiver for uMPX

The people who were going to test it were in locations that were hard hit by corona, which stalled everything. I hope to get some feedback soon, if not we might need to find other testers.

Author:  radiosean [ Sat May 23, 2020 1:22 am ]
Post subject:  Re: GPS Receiver for uMPX

Hi Hans! If it turns out that you need other testers, we'd love to help test it here in Las Vegas. We already have ST running on SFN, but using another method for synchronization. It would be very easy and quick to get it online and report results. Thank you!

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