[hpsdr] Gibraltar Prototyping

[Eric Ellison]

Steve

Smile, I have 'hovered' my cursor over the 'order now' many times! Now I am
glad I waited. I am not at all sure I won't slap that $150 Valpy-fischer on
it and have done with it!.

Thanks
Eric


-----Original Message-----
From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of
Steven Bible
Sent: Thursday, June 08, 2006 9:37 PM
To: hpsdr at hpsdr.org
Subject: Re: [hpsdr] Gibraltar Prototyping

***** High Performance Software Defined Radio Discussion List *****

Hi Eric,

Sure, the existing Reflock II is already like this (don't you have a Reflock
II?).  I am just adding the footprint for the GPS and the OCXO, but all
interconnections still keeps it flexible.

Once I get it layed out, I'll post it for review and comments.

73,

- Steve, N7HPR
 (n7hpr at tapr.org)




> -----Original Message-----
> From: Eric Ellison [mailto:ecellison at comcast.net]
> Sent: Thursday, June 08, 2006 6:23 PM
> To: 'Steven Bible'; hpsdr at hpsdr.org
> Subject: RE: [hpsdr] Gibraltar Prototyping
>
>
> Steve
>
> I would hope also that there be provision for an external 1 pps
> input from a
> user supplied GPS board as well as an external VC output and 10 mhz (or
> other return sig to the board for a user supplied VCXO... I been gathering
> parts for one or another of these time projets like an Isotemp 10
> mhz VCXO,
> possibly also 'inside world connections'.
>
> Thanks
> Eric
>
>
> -----Original Message-----
> From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org] On
> Behalf Of
> Steven Bible
> Sent: Thursday, June 08, 2006 6:28 PM
> To: hpsdr at hpsdr.org
> Subject: Re: [hpsdr] Gibraltar Prototyping
>
> ***** High Performance Software Defined Radio Discussion List *****
>
> As Bob has already aluded to, all these techniques have the same
> pricinples
> involved.
>
> I've started on Gibraltar and for first pass I was planning on the Reflock
> II design with the iLotus M12M and Trimble-T GPS footprints, and for OCXO,
> the Crystek and Valpey-Fisher footprints.  This way we can
> experiement with
> each.
>
> I could also include a microcontroller on the PCB for added
> flexibility.  I
> would suggest the PIC18F4550 full speed USB microcontroller.
>
> - Steve N7HPR
>
>
>
>
> -----Original Message-----
> >From: "Christopher T. Day" <CTDay at lbl.gov>
> >Sent: Jun 8, 2006 10:27 AM
> >To: Lyle Johnson <kk7p at wavecable.com>
> >Cc: hpsdr at hpsdr.org, FRANCIS CARCIA <carcia at sbcglobal.net>
> >Subject: Re: [hpsdr] Gibraltar Prototyping
> >
> >***** High Performance Software Defined Radio Discussion List *****
> >
> >Exactly. That article has been in my pile for some time. I originally
> >had thoughts of combining the Crystalizer kit, the Antenna Analyzer
> >Temperature control for same, Shera's GPS stabilization technique and my
> >cheap Delua GPS module with a 1PPS output, just to see what one could
> >wind up with. However, I've been too distracted by other things so far.
> >[What I just described sounds a lot like a cheapo Gibraltar, doesn't
> >it?]
> >
> >
> >	Chris - AE6VK
> >
> >
> >-----Original Message-----
> >From: Lyle Johnson [mailto:kk7p at wavecable.com]
> >Sent: Thursday, June 08, 2006 10:21 AM
> >To: Christopher T. Day
> >Cc: FRANCIS CARCIA; hpsdr at hpsdr.org
> >Subject: Gibraltar Prototyping
> >
> >> I would suggest that the RefLock II could be used as a Gibraltar
> >> prototyping system similar to the way PhilH and Bill have been using
> >the
> >> Xylo board for prototyping Janus.
> >
> >Consider also some of the techniques employed in the GPS oscillator
> >stabilization system designed by Brooks Shera
> ><http://www.rt66.com/~shera/index_fs.htm>
> >
> >73,
> >
> >Lyle KK7P
> >
> >
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>
> \r\n- Steve\r\n  (n7hpr at tapr.org)\r\n
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