[Moon-net] PCI GPS

[G1OGY (Dave)]

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Message: 2
Date: Tue, 08 May 2007 13:31:28 +0100
From: "David Hilton-Jones" <David.Hilton-Jones at clneuro.ox.ac.uk>
Subject: [Moon-net] PCI GPS
To: <moon-net at list-serv.davidv.net>
Message-ID: <46407BB00200006900007637 at gwmail.jr2.ox.ac.uk>
Content-Type: text/plain; charset=US-ASCII

Is there such a thing as a cheap PCI GPS system to lock a computer
clock? 

Thanks

David, G4YTL



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Hello David

I bought a <no-name> bare GPS RX board with serial 
NMEA O/P from an e-Bay seller: £12.00.
I had some presettable low voltage regulator boards 
(5v -> 3.3v) already: £2.00.
I built a cable to take power from the L/T's USB socket 
and deliver 3-wire serial to the L/T, threw it all in 
a bit of a plastic box and added software from CNS Systems 
http://www.cnssys.com.

The USB cable I destroyed came with some sort of device 
but say: £2:00.
The DB9 connectors came from the junk box and the 
DB9-to-DB9 interconnect cable likewise.

Just 'cos I could, I made a turnstile outboard aerial 
from an article in QST Oct 2002 by N7KKQ and removed 
the built-in patch aerial from the board (replacing 
it with an SMB skt).

Last weekend it was keeping the contest network on time
with 8 sats at 59 & 3D lock with Maidenhead readout as a
bonus (nice to know that you know where you are ;)

Total cost <> £20.00 and the satisfaction of having 
built it yourself.

Maybe I'll do some pictures and write up an article.  
Maybe...
-- 
Dave Gilligan, G1OGY
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