Assuming it's using a timing-optimized receiver, the lack of a clear
view to the sky is probably the biggest problem. Once they have a
valid almanac, they will normally select the satellites with the
highest elevation angles - and if you have an obstructed view that
might well include several that are not visible. Obviously, the less
channels on the receiver, the bigger an issue this is - on top of
this, the timing receivers tend to be engineered to favor selectivity
over sensitivity (the idea being that the gain is in the antenna and
you can select it to match the cable losses).
Yes, that in consistent with what I'm seeing, Pete, thanks. I am told
that the actual receiver is a Trimble SVeeSix, so why I occasionally see
eight reports from the Rapco firmware I don't understand.
I have no idea if the firmware in the Rapco will support the 8-channel
UT+ - but the fact that the monitoring software seems to have spaces
for up to 8 SVs gives me some hope it might (or possibly there is some
later FW that does). This could be worth trying.
Regards,
Pete Bell
As the unit is only required for frequency, I am not intending to modify
it. It has OCXO with quite good specifications, so it will more than meet
my needs. It would likely meet my needs five minutes after being switched
on!
Thanks for your comments. I've updated the Web page about the 6/8
channels, and added a couple of pointers for those who might want to try
the antennas. An outside one with a clear sky view would like be better
than any of these puck antennas.
Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-tay...@blueyonder.co.uk
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