Sounds like a better antenna and location might be the trick. You don't say how high what coax length and type... Since you do not have a manual you sat mask angles may also be causing an issue by eliminating possible sats. But weak signals will do exactly what you see 2 d fixes and an occasional 3. Thas a pretty good clue. Regards Paul.
On Sun, Jun 3, 2012 at 6:16 AM, Paul Flinders <[email protected]> wrote: > Hi > > Just joined the list - recently acquired a Rapco 1804m, mainly to use as a > frequency standard, especially to have something to check the FE-5680A that > I have. > > The unit itself seems to work OK - connected to a cheapie puck style GPS > antenna I got a 2D fix, occasionally 3D which corresponded pretty well with > my actual location and "Coarse" oscillator lock, but never "Fine". It's the > version with an OXCO rather than local Rubidium oscillator. > > I've read David Taylor's notes and had a hunt through the list archives - > I suspect I need a slightly better antenna, or a better position for the > one I already have. It had a decent enough view southwards/southwest but > somewhat obstructed to the north and north-east and comparing the visible > satellites on my 'phone it was certainly the northerly/north-eastern ones > that had low or no signal strength. > > However I could really do with a copy of the manual, at least to > understand the difference between "Coarse" and "Fine" locks on the > oscillator - does anyone have an electronic copy that they would be willing > to let me have? Or a physical copy - I'm happy to pay a reasonable sum. > > Also is the serial protocol for these documented anywhere? > > ______________________________**_________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
