[time-nuts] Homebrew WWVB TX simulator?

Randall Prentice randall.prentice at pscconsulting.com
Tue Sep 14 21:31:19 UTC 2010


Circuit Cellar did an article.

Feburary 2010 #235 Page 38.

This was a WWV simulator for a 2 part article the 2nd being a receiver.

73s
Randall ZL2RJP

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Bob Clements
Sent: Wednesday, 15 September 2010 9:10 a.m.
To: time-nuts at febo.com
Subject: [time-nuts] Homebrew WWVB TX simulator?


Has anyone built / seen / bought a small simulator for WWVB?

I live near Boston, and the WWVB signal is pretty marginal around
here.  MSF on the same frequency isn't that far away, and local
noise is pretty fierce.  So now and then one of my WWVB listeners
(like my generally nice Junghans wristwatch) gets screwed up.
The firmware writers aren't very cautious, and there's no parity
bit in the code.

So I have the itch to build a micro-power WWVB to set stuff with,
without having to wait overnight for one or more nights.

Before I dive into such a project, has anyone done/seen such
a thing that I could buy or copy?

I've got a WWV/WWVH simulator that I wrote (and announced) back
when they were about to replace the Audichron drum machines, and
I can start from there if necessary.  The hardware part seems
a bit more interesting, but for this purpose I don't need to
derive the carrier from a GPSDO or my ancient Rb oscilator.

Tnx,
/Rcc
Bob Clements, K1BC

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