[time-nuts] Jupiter-T GPS Rx Performance

[Brian O'Connor]

What is the accuracy variation of the 10 kHz and
1 PPS outputs of the Jupiter-T GPS receiver between
3-D Navigation, 2-D Navigation  and 0-D Position Hold
modes, after a couple of hours of reception?  Is it
less than an order of magnitude?  By  default I
understand the Jupiter to automatically select
Position Hold mode after 86,400 observations.

I normally track 6 to 8 satellites at about 20 dB Eb/No.

How much accuracy variation exists between the various
modes with other brands of GPS receivers?

In position hold mode is it best to average the 4 strongest
satellites or use all available?  How much accuracy
improvement results?

TIA
Brian VK4GTW