At 08:23 19/10/02 +0100, you wrote:
Further to Andy, G4JNT's talk at the LF Forum (RSGB HF COnvention) last
weekend, and his article in RadCom, Frank, K0BRA, mentioned a cheap source
of surplus Motorola ACS1397 8 Channel GPS modules from BG Micros
(http://www.bgmicro.com).
Anyone wanting to build a GPS locked frequency source may be interested to
know that the modules are advertised at $US14.95 and arrived here in the UK
three days after ordering over the Internet. The only snag now is to get an
active aerial, or some work-around - presumably a circularly polarised
aerial with a MAT device - and an OSX connector. Grateful for helpful
suggestions on the latter.
73 John, G3WKL
GPS active (+25dB) antennas are available from Waters and Stanton (and
probably others) for around £35.
You might find those Motorola chips already put 5v on the antenna line.
There are also surplus Garmin all-in-one antenna units around - 12v in,
data out.
Some were on sale at the Telford rally for £5, I'm told.
Walter.
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