[hpsdr] Gilding the lily.

[Graham / KE9H]

Jeff:

There have been "Trimble Thunderbolt" GPS-DO receivers offered from time 
to time
by the "Time Nuts" division of TAPR, which, other than the GPS antenna 
and power supply, is a
self contained GPS receiver and disciplined TCXO.   Although not 
currently available
from TAPR, they are for sale on eBay. 

Good connection/operation information:
http://www.leapsecond.com/pages/tapr-tbolt/

I will post pictures or descriptions of what the HPSDR user community is 
using to
drive their HPSDR/Excalibur boards, if they send them to me.

The first posting is a write-up of a very nice packaging of a surplus 
LPRO-101 Rubidium frequency
standard by Hans, DL2MDQ and Juergen, DD6UJS.  Look toward the bottom of
the Excalibur Wiki page for the ".pdf" write up.  In this case, they did 
not wait for Excalibur
and built their own Atlas bus interface, which is  a subset of the 
Excalibur circuit. It can also
directly drive an Excalibur.  LPRO-101 units are selling on eBay for 
less than USD $100.

Examples of constructive use of high stability references with HPSDR are 
the
Moon-bounce station of Joe, K5SO, or those using their HPSDR in frequency
measuring competition.

--- Graham / KE9H

==




Jeff Cook wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Having ordered Excalibur, downloaded and read the manual, my appetite 
> is whetted.  I realise that GPS discipline of Excalibur is probably 
> gilding the lily a little, but I fancy doing a bit of gilding, is 
> there someone who can tell me in simple terms how this is done.  
> Basically I haven't a clue as to what I need to buy and do in order to 
> be able to synchronise Excalibur with GPS.
>
> Thanks.
>
> Jeff Cook, G0AFQ.
>
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at openhpsdr.org
> Subscription help: 
> http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> HPSDR web page: http://openhpsdr.org
> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>


 1256588294.0