[hpsdr] High Accuracy Timing for HPSDR

[Alex]

That's a bit pricey.

How about we use G8ACE's design and investigate rolling our own.
G8ACE MKII OXCO  - http://www.microwaves.cwc.net/

Alex, N3NP

----- Original Message ----
From: Achim Vollhardt <avollhar at physik.unizh.ch>
To: hpsdr at hpsdr.org
Sent: Wednesday, May 17, 2006 6:58:33 PM
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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