[time-nuts] any WWV audio recordings available?
Ed Palmer
ed_palmer at sasktel.net
Fri Feb 12 23:46:29 UTC 2010
I'm about 680 mi. straight north of Fort Collins. About a year ago, I
got an Odetics WWV receiver that remembers the reception results for the
last 7 days. It tells me that the only time it can get a lock on WWV @
10 MHz is between about 0800 and 1800 hours. It never gets a signal in
the evening or through the night. The antenna is an active ferrite rod.
I think I remember that, years ago, the situation was reversed. You
could only hear WWV at night. Does your clock only listen at certain
times of day?
Ed
Scott Burris wrote:
> The second recording still did not get the clock to sync.
>
> So I tried an all up test, setting a WaveTek 288 signal generator to
> 5Mhz at -47db,
> and used your audio to AM modulate the signal. This gets the AGC amp
> back into
> the picture. And it successfully decoded, saying 10:15 PST!
>
> The synthetic recording also worked via RF.
>
> So I guess I'm concluding that the clock had some bad electrolytic
> capacitors, which I
> fixed, and I'm now going through a crummy reception period for WWV. I
> used to be
> able to get WWV on 5 or 10 Mhz overnight with just a wire strung out
> from the clock,
> but that doesn't seem to be cutting it anymore.
>
> Thanks for the assistance.
>
> Scott
>
> Majdi S. Abbas wrote:
>> There was a lot of fading present; possibly too much for the
>> receiver to work with.
>>
>> Try this recording instead:
>>
>> http://puck.nether.net/~majdi/WWV-10MHZ.wav
>>
>> Still some of the usual fading, but not nearly as bad as the
>> other night.
>>
>> --msa
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