On 10/2/12 10:35 PM, [email protected] wrote:
On 10/2/12 2:36 PM, [email protected] wrote:
Hello Paul,
thanks much for the feedback!
Yes, we think we have identified a nice combination of oscillators, GPS,
and firmware that seems to work pretty well. The GPSTCXO units cannot be
compared to a lower cost $150 Thunderbolt in terms of phase noise or
stability
of course, and they have CMOS 10MHz outputs, but then the TB's cost
around
$1500 new I guess.
We think the GPSTCXO's and LC_XO type units will work quite well
wherever
standard OCXO's are used today, and power/size/weight are an issue.
Intriguing.. Can it handle the Doppler, etc., for a cubesat in LEO?
(7km/s) The total Doppler isn't usually the issue (the GPS satellites
are moving faster, after all), but the receiver may not work for high
velocities, high altitudes?
GPS SVs moves at around 4km/s, but nevertheless there are still COCOM
limits implemented in nearly all receivers (never break both 504m/s and
18km height)
Doh. of course. higher is slower
In any case, though, nothing stops Jackson Labs from selling one that is
export controlled and has no restrictions.
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