[hpsdr] High Accuracy Timing for HPSDR

[Steven Bible]

Very interesting.  After Dayton let me take a look at this.  If I forget,
remind me!

73,

- Steve, N7HPR
 (n7hpr at tapr.org)


> -----Original Message-----
> From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org]On Behalf
> Of Alex
> Sent: Wednesday, May 17, 2006 7:14 PM
> To: Achim Vollhardt; hpsdr at hpsdr.org
> Subject: Re: [hpsdr] High Accuracy Timing for HPSDR
>
>
> ***** High Performance Software Defined Radio Discussion List *****
>
> 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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