[time-nuts] new WWVB BPSK dev board

[Poul-Henning Kamp]

--------

Try this:

	https://sdr.hu/

	Pick a european receiver, most of them have antennas that
	will do VLF, otherwise pick another.

	Enter 162 KHz

	Press the two arrows pointing towards each other, twice

	Pick extension "iq_display"

	Change from "density" to "points"

	Click on "160"

	See live phase modulation

	Change frequency to 198 kHz

	Change frequency to 77.5 kHz

	...

Then, if you want to really play:

	https://github.com/hcab14/kiwiclient

	allows you to capture and save the raw IQ data.

If necessary read:

	https://www.dspguide.com/

Now, stop talking and start coding :-)
	
-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.