Re: LF: Octo-soundcard for the Raspi

[Terry G0EZY <GW0EZY@sky.com>]

The only thing I have to sort out now is the timing pulse. it looks 
horrible on vtscope, a sort of double humped thing and the timing 
doesn't have anything like the values shown on your vtscope screen shots.
Are you using a square pulse from the GPS to feed the RC conditioner?

I'm using a Garmin GPS 18x LVC set up as shown in the Spectrum Lab 
instructions (GPS receiver specific notes) with a 100ms PPS length. The 
original 3xR network that combines PPS & NMEA data for SL timing is in 
parallel with the new RC network for the Octo. They seem to be operating 
independently.
So Paul, now you have an audio interface with six synchronised inputs:

1 - GPS timing
2 - N-S loop
3 - E-W loop
4 - Sense antenna

What are you planning for the other two inputs? I would like to display 
changes in polarisation and vertical angle-of-arrival ...but more 
appropriate to hf signals....
Terry