[hpsdr] High Accuracy Timing for HPSDR

[Steven Bible]

Hello Achim,

Thank you very much for this information.  It is good news to learn about
another timing GPS that is available.  I checked the ublox web site, and I
see one can buy online.  You are right that it is expensive.  The iLotus
M12M will be half this price.  And since Rick W2GPS has the M12 programmed
into TAC32, this may become the timing GPS of choice.  Occasionally, people
can find the Oncore UT, UT+, VP, M12, M12+ timing surplus.

I say it would be good to drop in and talk to the engineers about the
LEA-4T.  Perhaps you can learn something and tell us about your visit.

73,

- Steve, N7HPR
 (n7hpr at tapr.org)


> -----Original Message-----
> From: Achim Vollhardt [mailto:avollhar at physik.unizh.ch]
> Sent: Tuesday, May 16, 2006 12:45 PM
> To: srbible at earthlink.net; rwmcgwier at comcast.net; kk7p at wavecable.com;
> hpsdr at hpsdr.org
> Subject: [hpsdr] High Accuracy Timing for HPSDR
>
>
> Hello Steven, Bob, Lyle and all,
>
> believe it or not friends, I have been following the HPSDR project for a
> while (need some new motivation after my PICaSTAR works.. thanks Lyle!).
> Now that you are looking for some help on 'Gibraltar', maybe I can be of
> use, as I am currently building two GPSDOs:
>
> - #1 (the 'god' source') with HP10811, the famous Brooks Shera
> controller and a Jupiter-T from G3RUH
> - #2 with an ISOTEMP OCXO, A Jupiter-11 (not -T) and a simple PLL
>
> Have been in contact with a colleague at AMSAT-DL who gave me some
> valuable information about stabilizing OCXOs..
>
> Now to the point, as there seems to be a problem in getting a timing GPS
> receiver. Have a look at the LEA-4T from www.ublox.com
>
> ok, it is not cheap (179 USD), BUT:
>
> - you can buy them in single quantities
> - works indoors (!)
> - 15ns 1-sigma accuracy
> - 1-Satellite GPS timing
> - USB and RS-232 interface
> - 17 x 22.4 mm
>
> and I can pass by their HQ, as it is no 10 minutes away from here
> (Zuerich, Switzerland).
>
> If there is interest, I can source more info..
>
> Disclaimer: I am NOT connected in any way to this company.. I bought
> once a GPS antenna from them.. that's all.
>
> 73s Achim, DH2VA
>
>
>
>


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