[ntp:questions] Re: Good GPS for attic?

David Lee dl at dl
Fri Feb 11 15:07:07 UTC 2005

Jonathan Sturges wrote...
> I'm looking to use a GPS receiver as an inexpensive reference clock for 
> an xntpd time server.  I'd like to leave the GPS in my attic for 
> convenience and asthetics.
> A while back I bought a Radio Shack DigiTraveller GPS for this purpose. 
>   It's ideal on almost all counts except that it can't keep a consistent 
> lock from my attic.  It's close though (maybe if I could mount it above 
> the insulation that would help).
> Can anyone recommend another inexpensive GPS that might be more 
> sensitive?  I don't want fancy, just plain-jane with a serial port that 
> can spit out NMEA strings for xntpd.  PPS would also be nice, but I'd be 
> happy without it too.  (I'm mostly doing this to have a time reference 
> for household computers, and also just the experience of setting this 
> up.  Fantastic precision would be nice but certainly not required for 
> this particular project.)

How about a re-radiating antenna on the roof feeding your existing GPS -
route the cable under a tile or under the eaves like a TV aerial lead. 


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