[hpsdr] High Accuracy Timing for HPSDR

[Steven Bible]

Hi Achim,

I know the Crystek folks.  If we can get a large order, we can bring the price down.  It was my encouragement that got them to offer the OCXO as a catalog order item.  Normally, OCXOs are build to order.  I've got quotes from several companies and the prices include NRE.  So this is a bargin, so to speak.

Buying HP 10811's surplus on eBay, I've spent easily $175.00 for one!  Having a source is important.  

I am always open for ideas.  

- Steve N7HPR



-----Original Message-----
>From: Achim Vollhardt <avollhar at physik.unizh.ch>
>Sent: May 17, 2006 6:58 PM
>To: hpsdr at hpsdr.org
>Subject: [hpsdr]  High Accuracy Timing for HPSDR
>
>***** High Performance Software Defined Radio Discussion List *****
>
>Hi Steven,
>just checked with Mouser for the OCXO you listed.. 260 bucks for single 
>quantity? Can't be true.. can it?
>
>73s Achim, DH2VA
>
>> Hi Alex,
>> 
>> I'd be willing to help with this board since I was the one that laid out the
>> Reflock II PCB.
>> 
>> 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.
>> 
>> I have already started on a PCB that integrates the GPS, Reflock II, and 10
>> MHz OCXO (I am looking at the Crystek CO27VH15DE-12-10.000 available from
>> Mouser).  The goal I have is to design the board such that all the parts can
>> be readily purchased.  I really don't want to rely on surplus GPSs and
>> OCXOs.  This entire lash up will be tested in N8UR's timing lab.  The GPS
>> footprint would accomidate the Oncore UT/VP and M12 GPSs.  So if you can
>> populate which ever one you have on hand, or can purchase surplus or a new
>> M121M.
>> 
>> 73,
>> 
>> - Steve, N7HPR
>
>
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\r\n- Steve\r\n  (n7hpr at tapr.org)\r\n

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