Joe VO1NA wrote:
> A GPS unit is now on hand. It provides NMEA strings but
> I'm not sure about the pps.
PPS essential if you're using Spectrum Lab or vlfrx-tools.
The GPS that I use these days is this one
After some arithmetic and comparison with other signals,
I reckon that if you can muster 40uW, it will be possible
to decode messages at 8277 Hz here the UK, and 20uW would be
enough for a carrier detection. That assumes a suitably