[App_rpt-users] RTCM drop out and PTT stuck, GPS lock

[Hayden Honeywood]

Hi Jesse,
Thanks for the info. The GPS unit I have is the BG7TBL unit. When I said
“GPS puck” I probably should have said GPS mouse active antenna that came
with the BG7TBL unit (Little Black magnetic thing that has a SMA connector
on the end of the coax).

I’m surprised that the GPS would be affected by the transmitter, but I
suspect water may have gotten in somewhere causing it to go bad when it
transmits now.

I can probably hook up directly to the serial output and measure signal and
data to see what happens.

Still not sure why one of the Voter boards decided to lock on transmit
though.


On Fri, 29 Dec 2017 at 2:30 pm, Hayden Honeywood <haydenph91 at gmail.com>
wrote:

> One of my VOTER boards has decided to drop out of GPS lock when the
> transmitter is keyed up. Has been working fine for months.
>
> The GPS antenna is a magnetic "puck" on the shed feeding a BG7TBL GPS.
> I've had one of these antennas die in the shack completely - plug it in and
> the GPS never gets lock. The UHF repeater antenna is about 30 feet
> vertically above it and I've never had an issue. Same GPS antenna on
> another site and that is only about 3 feet away from the TX antenna, but no
> issues there. Perhaps it's water problems?
>
> The second problem - perhaps coincidence, is that at least one of my
> transmitters lock on transmit. I did see this once on the bench but it
> never happened again. There was no input signal, and you could talk over
> the top of it. It never times out, and the RTCM board indicates PTT as 1. A
> reboot fixes the issue.
>
> Anyone know the causes of such problems?
>
> Regards
> Hayden VK7HH
>
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