[hpsdr] HPSDR and Beamforming (was Infinite precision, phased arrays, and us)

[Murray Lang]

Having been persuaded that beamforming can be controlled via I/Q, the next 
question is: what (if anything) is required of HPSDR to make it work?
Are there going to be "clock out" and "ext clock" connectors somewhere to 
synchronise multiple HPSDRs? Or will they all have to have Gibraltar boards?

Now I'm wondering about synchronisation of sound cards if phase adjustments 
are performed by PC software and there is a separate sound card for each 
Tx/Rx. I suspect that they would have jitter relative to each other due to 
task switching in the device drivers and to their own clocks being 
unsynchronised. I suppose you would have to go for a professional sound 
card with more inputs/outputs (at least 4 stereo channels in each 
direction?). Maybe this is a candidate for an HPSDR board.

Am I triggering any SPAM filters now?

Murray
VK6HL


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