On Fri, 24 Nov 2006, Tony Whitmore wrote:
> Cost about £300 IIRC and ran hooked up to a very old Dell G1 desktop
> running Debian Sarge.
If you can get a reasonable view of the sky, a GPS receiver will do it. 
There are a couple of receiver-only units from Garin (GPS35 and GPS36 
IIRC) that are around the UKP100 and not the kind of thing that's likely 
stolen. Just a black blob on a bit of wire. But they must see the sky! 
by a window's probably OK. 4 or 5 feet indoors and forget it.
G.
-- 
Gordon Scott                  http://www.gscott.co.uk
        Linux ... Because I like to *get* there today.