Powhatan P25 System

maus92

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Here's the 7 site design, de-scoped from an 8 site design. I'm always interested in how new systems function when original designs are tossed for cost reasons, but user expectations have not changed.
 

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maus92

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Some of the frequencies in the RRDB entry are not licensed to Powhatan County: 851.625; 851.9625; 858.075 and 858.300. Two additional call signs are WRDD912 and WRDL447. Attached spreadsheet maps the frequencies, licenses, and sites.
 

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maus92

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I finally got back around to monitoring the new system tonight using DSD+. It appears that they are currently using 852.2250 as the control channel with 4 voice channels. Has anyone else been monitoring? Any talk groups starting to be active?
The county provided documentation that states the system will have 5 channels which correlates with your finding. The RRDB entry for the system has some extraneous frequencies that should be removed if they are not verified. The frequencies in the FCC licenses are likely to be correct.
 

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maus92

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The submitted frequencies came from Pro96com and dsd+ as I submitted them
I would check them again because it doesn't correspond to the FCC licensing, or what the county states the system as consisting of 5 channels. If they are using the frequencies you found, the county would be in violation and possibly interfering with another user. But you are there and I am not.
 

345binder

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Powhatan Today –07/07/2021
My attempt at providing a link may not work.
Powhatan Today, (newspaper), July 7, 2022 edition provides article on updated timeline for testing in field and switch over, with legacy ending at the end of this year. I did not check the County's Facebook page if the same information is given.

Now, for my information:
What current or past scanners will work with Harris and or this new system?
I am sure the latest from the 996x on probably will, but are there any older radios that would work?
 

markrob7000

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I agree that there appears to be some extra frequencies in the RRDB.

This is the information that I grabbed from DSD+

852.2250
853.1750
853.7875
854.2625
858.0125

Site 92959.00A - 10.10

NAC: 00A
 

maus92

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Powhatan Today –07/07/2021
My attempt at providing a link may not work.
Powhatan Today, (newspaper), July 7, 2022 edition provides article on updated timeline for testing in field and switch over, with legacy ending at the end of this year. I did not check the County's Facebook page if the same information is given.

Now, for my information:
What current or past scanners will work with Harris and or this new system?
I am sure the latest from the 996x on probably will, but are there any older radios that would work?
It's going to be simulcast P25, so the expensive scanners / radios that are designed to work with simulcast systems will like be the best choice. A Uniden 996P2 or Whistler TRX series are technically capable of receiving the system, but will likely not be the best choice.
 

BoxAlarm187

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The project manager for the new system hopes for an October 21 go-live (assuming foliage-based coverage testing meets standards) and final acceptance in 2022.
 

345binder

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Seems to be more dispatch testing and use of a test location, going on of late.
I have also noted there may be dispatch on the new channels, as there is more confirmation of calls by the dispatcher, that may not have originated by MDT or low power use.

Anyone notice for months, fire dispatch was also simulcast on another county’s frequency, I think it was either Dinwiddie or Nottoway?

I have also noted the new, I think, SHP unit, (maybe 1149), did not have the old main channel in use, but was apparently answering dispatch on another channel, for about a week or so.
 

BoxAlarm187

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When the Powhatan VHF system went live some 20 years ago, a handful of changes were made to cut down on overlapping with other agencies. There were still times that Madison County could be received on Fire/Rescue dispatch, however. Goochland and Dinwiddie shared some VHF frequencies in the past.

Grid testing is actively underway on the 800MHz system now.
 
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