Sceptical that MSF is a jammer for WWVB in North America.
DCF (77k5, German) commonly provides better signal strength / reception than
MSF in the UK.
However, if RF is involved ...
Martin
-Original Message-
From: Nigel Johnson Ham via cctalk [mailto:cctalk@classiccmp.org]
Sent: 15
There are a number of WWVB simulator projects out there that will transmit a
weak but usable signal to your clock after getting sync’d from ntp or GPS NMEA
time messages. They were developed to help people develop receivers :-) One
in particular uses an AVR and it should be pretty simple to
Will Cooke and Jonathon Chapman explained it.
A change to the protocol that old clocks don't know about.
bill
That would be good old MSF!
https://www.npl.co.uk/msf-signal
I wasn't aware of it being heard in NA though - maybe being in the great
lakes is a bit too far.
Bit it should still sync correctly!
cheers,
Nigel
On 2024-01-14 20:41, Jonathan Chapman via cctalk wrote:
I agree with Don on the
> I agree with Don on the interference. We have a very high noise floor
> here in Toronto as well as being on the fringe
IIRC there's something on-frequency in England that often swamps WWVB on the
northeastern part of North America, too!
Thanks,
Jonathan
I agree with Don on the interference. We have a very high noise floor
here in Toronto as well as being on the fringe, and an older watch in
the same window as my two Citizens frequently comes up with a fantastic
date and time - possibly due to lack of data redundancy are error-checking.
73 de
I have two watches that sync to WWVB and they always agree with CHU on
HF and a ham rig that syncs to GNSS. So I think it is bang on or there
is a government conspiracy to make us late for work 樂
73 de ve3id
On January 14, 2024 2:49:19 p.m. EST, Bill Gunshannon via cctalk
wrote:
This
I also have a decades old SkyScan WWVB LCD wall clock which has survived a few
sets of leaking AA batteries :).
It still keeps accurate, occasionally it doesn’t sync, though I think that can
be chalked up to signal propagation.
It’s possible the problem is interference EMF, RF etc. Try
> On 01/14/2024 1:54 PM CST Jonathan Chapman via cctalk
> wrote:
>
>
> Bill,
>
> If it's an older clock it's probably tripping over a timecode transmission
> format/modulation change. I forget the exact details but changes were
> required to my old 8085-based Spectracom receiver.
>
>
I have two watches that sync to WWVB and they always agree with CHU on HF and a
ham rig that syncs to GNSS. So I think it is bang on or there is a government
conspiracy to make us late for work 樂
On January 14, 2024 2:49:19 p.m. EST, Bill Gunshannon via cctalk
wrote:
>
>This is kind
On 1/14/2024 2:54 PM, Jonathan Chapman via cctalk wrote:
Bill,
If it's an older clock it's probably tripping over a timecode transmission
format/modulation change. I forget the exact details but changes were required
to my old 8085-based Spectracom receiver.
Thanks, that's probably it.
Bill,
If it's an older clock it's probably tripping over a timecode transmission
format/modulation change. I forget the exact details but changes were required
to my old 8085-based Spectracom receiver.
Thanks,
Jonathan
On Sunday, January 14th, 2024 at 14:49, Bill Gunshannon via cctalk
This is kind computer related but maybe more ham radio related
but I figure if anywhere, here is the place to find an answer.
I have a SkyScan ATOMIC CLOCK.
It is supposed to get its time from WWVB.
The antenna icon that is supposed to mean it is receiving
WWVB is on.
Your probably wondering
I have a few left, but not sure where they are. I should have time to dig
later this week.
On Sat, Jan 13, 2024 at 9:27 AM Rick Murphy via cctalk <
cctalk@classiccmp.org> wrote:
> 54-09728. That's burned into my brain.
> (Literally dozens of ECOs)
> -Rick
>
> On January 13, 2024 12:21:52 AM
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