Date: Wed, 27 Nov 2019 22:20:50 -0700 (MST) From: Ross Alexander <rwa@athabascau.ca> To: James Shuriff <james@opentech.cc> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: RE: rpi3 clock drift Message-ID: <alpine.BSF.2.21.99999.352.1911272214050.28592@autopsy.pc.athabascau.ca> In-Reply-To: <MWHPR06MB3134EC22EC3148DA800B2B7DAA440@MWHPR06MB3134.namprd06.prod.outlook.com> References: <alpine.BSF.2.21.99999.352.1911271039470.281@autopsy.pc.athabascau.ca> <MWHPR06MB3134EC22EC3148DA800B2B7DAA440@MWHPR06MB3134.namprd06.prod.outlook.com>
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On Wed, 27 Nov 2019, James Shuriff wrote:
> Yeah, I'm convinced 19.2 MHz is what I *should* have. I just need to
> figure out what's supplying the frequency. I expect it's a bad FDT.
>
> What model is your GPS hat?
An Adafruit "ultimate gps hat" (typical commercial hyperbole, sigh.)
It's about $65 after you add the 40 pin molex connector, the
micro-whatever to SMA cable, and the external amplified patch antenna.
You can get along without those last two if your Pi is outside, but
I'm in a metal roofed building which the little patch antenna built
into the hat proper finds impenetrable. An external antenna out on
top of the roof makes all the difference.
regards,
Ross
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Ross Alexander, (780) 675-6823 desk / (780) 689-0749 cell, rwa@athabascau.c=
a
54.71593 N 113.30835 W
Order is simply a thin, perilous condition
we try to impose on the basic reality of chaos.
-- William Gaddis, _J R_
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