[ntp:questions] MSF outages

David Lord snews at lordynet.org
Thu Dec 30 20:44:34 UTC 2010

Q wrote:
> "David Lord" <snews at lordynet.org> wrote in message 
> news:uhpuu7-jvs.ln1 at p4x2400c.home.lordynet.org...
>> Anyone else having problems receiving MSF?
>> Today the modulation level appears to less than 50%
>> rather than on-off modulation.
> My big MSF rx at work was OK today when I looked - was showing lock on both 
> modules in East London, and I have nothing to tell me the one in South 
> London was playing up (Although due to a fault) its only running on 1 rx 
> module at the moment.
> I don't get any real tech info out of it - its either locked or not (well 
> there's a few things between those end posts) but we have not been aware of 
> anything since the last planned MSF outage.
> I'm also not aware of anything that's upset the JaNET MSF based ntp server 
> today. (Though I don't know where it lives physically anymore)
> Where are you located anyway? 

About 100 mile away. It's both the receiver downstairs based
on a Conrad module and the one I was working on upstairs.
 From scope trace there didn't look to be any chance of time
sync due to modulation level having dropped off.

Note that these are just receivers without any holdover
circuitry. For most of the year the Conrad module was
selected and with reach 377 but since end of November the
reach has been dropping off and it's been mostly marked
bad. Today there have been just 3 periods showing 377
with poll of stats being 10 minutes intervals.


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