[time-nuts] New WWVB modulation format receivers (NOT)

J. Forster jfor at quikus.com
Fri Feb 21 10:13:41 EST 2014

Well, I used to be able to see LORAN pulses w/ a 3-inch diameter loop and
a Tek 7000-series 'scope.

WWVB is hard to detect w/ a 3-foot diameter HP shielded loop w/ integral
preamp & 2 stages of mechanical filters. (HP 117A). The other half ogf the
time it was undetectable.

Paul S uses a loop that is much larger.



> I have an OpenHPSDR Hermes and it has no problem receiving WWVB;
> however, since I live in Fort Collins - Colorado, part of the success
> might just be the strong signal. I wonder if I could just stick a piece
> of wire into one of the channel inputs of a 192Khz sample rate audio
> interface (especially if it had a good low noise mic preamp) and decode
> WWVB from baseband audio!
> John
> On 2/20/2014 9:55 PM, wb6bnq wrote:
>> Hi Zim,
>> With but a very few exceptions most broadband Amateur radfio
>> trancievers do not do well below 500 KHz even though many allow for
>> tuning below 500 KHz.
>> Bill....WB6BNQ
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