[time-nuts] Monitoring the Rapco 1804M - how antenna changes affect the unit
David J Taylor
david-taylor at blueyonder.co.uk
Wed Nov 2 10:49:15 EDT 2011
> Ah, I didn't realize this was based on the Trimble board - I was
> having a mental seizure and thinking it was using a Motorola OnCore,
> as so many of the others did. Are you really sure it is an SV6?
> Trimble also made an SV8 timing that was in the same form factor and
> if it was using that it would certainly explain why you sometimes see
> more than 6 satellites - although I have a vague memory that if you
> talk to it as if it was a 6-channel board it starts pretending to be
> one for reasons of backwards compatibility, so even if you do have the
> SV8 in there it likely won't do you much good.
Next time I have the unit open I will take a look. Are there obvious
markings to distinguish the boards (it's a board and not a box), as I
recall looking but no seeing any.
>> 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
>> needs. It would likely meet my needs five minutes after being switched
> True, but this is time-nuts. The pursuit of more accuracy than you
> need is the whole purpose of the list :)
Yes, I know! Sad, but 10 Hz at 150 MHz and PCs to within a few
microseconds will do me nicely!
SatSignal software - quality software written to your requirements
Email: david-taylor at blueyonder.co.uk
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