[time-nuts] Problems with TAPR Oncore M12+ kit
kd4pbj at gmail.com
Tue Jul 4 14:40:48 EDT 2017
Definitely RX LED on and not TXD. I'll look more into this tomorrow night when back at my bench.
> On Jul 4, 2017, at 12:02 PM, Gregory Beat <w9gb at icloud.com> wrote:
> Chris -
> I was not aware that you were having issues with the TAPR Experimenters Kit.
> I am finishing a DIY GPS kit build from "assorted parts sources" for Jim Pruitt.
> Jim missed purchasing the TAPR kit in May 2017 (sold out before he ordered).
> I acquired ($) a Synergy SynPaQ/E carrier board with a dead M12+ receiver.
> Since I happen to have a couple spare Oncore M12+ boards (inventory, working),
> it was just a matter of swapping those receiver boards.
> You need to be careful in selection of the GPS antenna, since there are a wide variety on the surplus market: Passive (no pre-amp); Active with different voltage requirements (12, 5, or 3.3 VDC) from GPS receiver.
> At the electronics bench, I try to use 5 Volt antennas (or 3.3V that are 5v tolerant) with similar GPS receivers (5V preferred).
> Sent from iPad Air
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