WWVB (from NANOG)

[Hal Murray]

> An eBay search for "EverSet ES100 WWVB BPSK Phase Modulation Receiver Kit"
> should prove fruitful. I have one - but I haven't had time to tinker with
> it yet.
> 
> The kit comes with the double-antenna setup that appears to be key to the
> improved reception. In the clocks, the antennas are at 90 degrees relative
> to each other.

Alas. In concept, that is extremely interesting. But a bit too
bare-metal for me; first I'd have to recruit help to design and build
it into something one of my computers can talk to.

OTOH, I have written successful I2C code; if something like this
hardware were a Raspberry Pi HAT I'd have bought one before I finished
typing this reply and probably have a test system up in 24 hours. So
it's close.  Real close.  Relevant link:

------

You should be able to plug it into a Pi without a hat.  It takes 3 wires: 
ground, power, and signal.

Connect the signal to a PPS pin.

I've seen code to decode WWVB but don't remember where.  My first guess would 
be one of the drivers we dropped.

-- 
These are my opinions.  I hate spam.