PSN-L Email List Message

Subject: Re: GPS receiver group buy, and other hardware for sale
From: "Larry Cochrane" cochrane@..............
Date: Sun, 15 Jul 2001 18:47:13 -0700


> Larry
>     I have been using the radio shack "atomic clock" for quite a while
with SDR.
> What might be the advantage of the GPS clock?

If your existing method works well then you probably don't need the GPS
system. With GPS timing one can get a few milliseconds of accuracy, with
WWVB the accuracy is around +-20 ms and it can very with reception.

>The price is right for the radio
> shack unit but maybe there is a problem with reception. Would the GPS unit
> more compatable with file transfer via pcanywhere and it's interupts?

No, with GPS SDR still uses a 1 ms (or 500 us at high SPS rates and number
of channels) interrupt.

If you don't have a handheld GPS receiver one can also use the
receiver/interface board to do a site survey of you sensor using WinONCORE
or TAC32 (


> Regards
> Barry


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Larry Cochrane <cochrane@..............>