Best practices question

Paul Theodoropoulos paul at
Wed Jun 26 23:18:42 UTC 2019

On 6/26/19 02:02, Eric S. Raymond wrote:
> Hal Murray <hmurray at>:
>> There is only one chip available that works with the new modulation.  (that I
>> know of)
>> e-modulation-receiver-only/
>> The ES-100 uses SIO or one of the similar 2 wire type I/O interfaces.  Should
>> be easy on a Pi, but I don't have directions.  I don't know how to do it on a
>> PC.
> That's interesting.
> WWVB reception would be very dodgy here - I live about 30 miles from
> Dr. Mills's digs in Delaware and while while that is mostly westward
> distance it's not by enough. Too bad - if I thought I could get signal
> here I'dvbe very tempted to do a Pi-based receiver build to complement
> my GPS-based one.
In case it hasn't been mentioned here recently -

He does some nifty time hardware and software. I tried using his suite 
of applications for getting it working, but had no luck - I think 
largely just due to the weak signal, I'm in the outlying SF bay  area. I 
was able to verify the PPS was just barely being received with the use 
of a little micro-oscilloscope, but that was as far I was ever able to 

Paul Theodoropoulos

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