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Old 07-30-2017, 11:01 AM
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Default York/Dauphin page system

Fox 43, WPMT (York) reports the paging/alert systems in York/Dauphin CO's
is down due to GPS failure.
Perhaps one of you tech guys can explain what GPS has to do with alert
system paging ?
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Old 07-30-2017, 11:10 AM
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Quote:
Originally Posted by W3DMV View Post
Fox 43, WPMT (York) reports the paging/alert systems in York/Dauphin CO's
is down due to GPS failure.
Perhaps one of you tech guys can explain what GPS has to do with alert
system paging ?
probably to keep the sumulcasting in time

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Old 07-30-2017, 11:20 AM
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GPS is used to keep the paging system in sync.. Both systems use multiple transmitters that are simulcasting (transmitting at the same time) so GPS timing is used.
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Old 07-30-2017, 4:38 PM
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Thanks. Never gave that a thought...
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Old 07-30-2017, 9:45 PM
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Dave, wouldn't the GPS receivers at the transmitter sites be able to revert to one of the other 31 satellites in the GPS system if it loses contact with one?
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Old 07-30-2017, 9:47 PM
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Also, for what it's worth, it turns out that it INS'T actually a GPS failure. It's a firmware issue with the GPS clock system used by the paging transmitters.
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Old 07-31-2017, 8:02 AM
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It looks like the techs went to a *few* sites around the county and got it back online. The county says the few sites are providing ok coverage for most of the county except for the extreme upper county.
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Old 07-31-2017, 8:22 AM
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The GPS is COMMON per site... Meaning there is ONE GPS receiver at each site as a master clock for both the Trunked system and Paging.
Yes, OCGUARD, the receiver tracks 12 satellites as a rule.. One or two out is not going to degrade the timing..
Typical IN EXPERIENCE at YCDES tech...
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Old 07-31-2017, 8:24 AM
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Dauphin might be up but York is down..
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Old 07-31-2017, 8:28 AM
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The 26 million dollar questions....
Why did York publish a GUESS as to why the system was down???
Why did it take a full day to figure it was a firmware issue that caused the outage???
Why did the tech team not figure the issue out sooner?.. No Experienced personnel??
There are TWO controllers on the paging system, one at YCDES and one at the LTBF.. BOTH controllers were out at once??

IF in fact the GPS on the paging controllers (plural) went bad, why didn't the "Tech" jumper the time base output from the trunked GPS to the paging?, They are both 10 MHz.??

SORRY BUT SOMETHING ISN'T ADDING UP HERE...

HELLOO YORK COUNTY COMMISSIONERS... WHERE IS OUR TAX MONEY GOING??
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