I don't think it was modified, but I didn't buy it new so it could have
been. As I tune down past 100 KHz, it just keeps going, and when I hit 30
KHz it suddenly jumps to 30 MHz. I'm not complaining, of course - - just
thought Icom could have been a little more realistic in their specification.
I have the original product description folder as well as the operating
manual, and neither mentions a 30 KHz to 30 MHz frequency jump. As far as
how well it receives at that frequency, I can't measure it but it sounds
fine - - with this resonant loopstick and source follower, I get WWVB at
about S8 on the meter, but as expected, that changes with the propagation.

Michael, the feature of the RS clock you described doesn't show up in the
clocks I've seen - - no button to press to start a sync-up sequence. But
they do start a sync-up if the time setting is changed. A little switch
button may be the modification that I wind up putting into one of these
clocks if I can figure out how.

Thanks for all your comments.

Chuck W6PKP

"Hal Rosser" wrote in message
...
is it a modified rig ?
The specs for the IC765 indicate it will receive down to .1mhz (100khz) -
not 30khz
the "30" is the upper range (in mhz - not khz)
The website with the specs is he
http://www.icomamerica.com/support/a...eur/ic-765.asp


"Michael Black" wrote in message
...

"Chuck Olson" ) writes:
I recently bought a couple of La Crosse Technology digital clocks that
are
designed to start listening for the WWVB signal at 60 KHz at midnight,
and
every hour until 6AM. I have a ham transceiver IC-765 that receives
down
to
30
KHz (too bad they don't mention this fact in the specifications of the
equipment) and I've been able to pick up the signal with a loopstick
coil
and resonant capacitor using a source follower interface to the
receiver
input, with some success, but I would like to qualify other locations
in
the
house besides the immediate vicinity of the ham station - - hopefully
more
quickly than mounting the clock and waiting to see if it updates its
setting.

Ideally, I would like to take apart a small WWVB sync-able clock and
tap
into its wiring with an LED driver so that I could see the LED flash
in
time
with the 1 BPS carrier modulation. Has anyone tried anything like
this,
and
is there a website that might show details of the conversion? I'm open
to
other ways to do it as well and welcome suggestions.

Thanks,

Chuck





So can't you just buy one of the clocks that has an indicated showing
that it is receiving the signal, and make sure it has a button to press
to get it to sync up on demand?

I got a Radio Shack clock back in February, regularly $30 here in Canada
but on sale at twenty. It has both. I got home about 5:30pm, put
in the batteries, pressed the button, and after a few minutes it did
indeed set to the proper time. I've moved it around, and there are
locations
where it can't receive the signal, and the little marker on the LCD
readout
is turned off.

Given that this was my first WWVB clock, I would expect every such clock
to have these features, or else they'd be inferior.

Michael VE2BVW



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