[hpsdr] High Accuracy Timing for HPSDR

[Steven Bible]

Hi Alberto,

The big problem with Trimble products is how to commoners like us purchase them?

Both Trimble and Navman are difficult to buy products.  When I look them up, there's no direct buy, and the distributors are not stocking the timing products, and there's a several weeks lead time.

The M12M TAPR can buy in bulk.  TAPR has been stocking Motorola OEM GPSs for many years (and Garmin).

- Steve N7HPR



-----Original Message-----
>From: Alberto I2PHD <i2phd at weaksignals.com>
>Sent: May 11, 2006 3:21 AM
>To: hpsdr at hpsdr.org
>Subject: Re: [hpsdr] High Accuracy Timing for HPSDR
>
>***** High Performance Software Defined Radio Discussion List *****
>
>Steven Bible wrote:
>> 
>> As to a GPS engine, we need to look for a timing GPS.  A timing GPS can
>> perform a self survey and then lock its position for a more accurate 1PPS
>> signal.  The older 8-channel Oncode UT, UT+, and VP, or the newer 12-channel
>> M12, M12+, and M12+ Timing have been timing GPS of choice for hams since we
>> could buy them and using W2GPS's TAC32 program to operate them.  Since
>> Motorola sold off its Oncore line to SiRF, and the dust is about to settle,
>> the M12 line will come out later this year as the M12M.
>> 
>Have you considered the Trimble Resolution T ?
>http://www.trimble.com/resolutiont.shtml
>It has 15 nsec (one sigma) jitter on the 1pps, is rather inexpensive and available now.
>
>73  Alberto  I2PHD
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\r\n- Steve\r\n  (n7hpr at tapr.org)\r\n

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