[time-nuts] RFDO - Experience and questions

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Mar 7 14:02:49 EST 2017

In message <CAD2JfAh6=+RsLnzRAFcjVUaDb7kYiQq45emuQ4va3YP7SE_HeQ at mail.gmail.com>
, paul swed writes:

>I went back over the starting thread and believe your home brew oscillator
>may prevent you from getting all of the accuracy out of TDF.
>As I was thinking about a TRF radio and locking the question I arrived at
>is how do you turn 162KHz into something useful like 100 KHz 5 MHz or 10 MHz??.

You use clock an ADC from 1MHz derived from your reference, and
then you demodulate and decode TDF in software on the microcontroller
attached to the ADC.

Get with the times, guys...

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.

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