Montgomery County PSSM Program update
- Thread starter maus92
- Start date
There is a Broadcastify Calls stream setup i think someone who is active in the forums set it up.
www.broadcastify.com
Looking forward to the fun scanning tomorrow!
Talkgroups Seen on System: Montgomery County, MD (P25)
Broadcastify Calls System Status - Talkgroups Seen
Looking forward to the fun scanning tomorrow!
I've been quietly feeding both the P16 and P25 systems simultaneously to OpenMHz since about mid-January, as I was anticipating the switchover last month. So far, it's mostly accidental or test transmissions. Though the past few days, the radio shop and other TGs has been performing more tests.
TGs that haven't been identified yet, or I haven't gotten around to adding them to a TG list to identify them, will have just the TGID.
EDIT: the URL doesn't include all the TGs that have transmitted, just the ones that tend to be commonly used. Easy enough to add in the TGIDs to the end of the URL.
openmhz.com
TGs that haven't been identified yet, or I haven't gotten around to adding them to a TG list to identify them, will have just the TGID.
EDIT: the URL doesn't include all the TGs that have transmitted, just the ones that tend to be commonly used. Easy enough to add in the TGIDs to the end of the URL.
OpenMHz
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Well its now 0519 and I wonder if they will switch over at 0600 or 0700?? After they switch over then its time to fire up the SDR and Unitrunker as well. Its going to be a very busy morning here and hopefully we can do the buildout of the system in a few days or after they make the complete switch over within the next 2 weeks. I wonder when the county government and local governments will do the switch over as well.
As of 0610 Montgomery County Police Dept is now using the new system. They are now doing roll call of all units at 0615
It looks like a few transmissions are being broadcast on 851.275MHz as well, which is not on the list of frequencies for the P25 system. I'm not sure if this is a holdover from the P16 or if this frequency will be re-used for the P25 later on. If so, I'll have to retune my SDR.
EDIT: I think it's the P25 feeder I've setup is picking up P16 transmissions, while the P16 feeder is properly receiving them. Well, it's the first day, so it'll take some time to shake things out between the two and full adoption of using the new system.
EDIT2: after more observation, it looks like sometimes there are double transmissions - the same transmission being broadcasted on both P16 and P25.
Code:
[2021-02-23 13:29:46.254340] (info) [mocomdps] TG: MCPD A1 Dist1 (6000) Freq: 851.275000 MHz Not Recording: no source covering Freq
[2021-02-23 13:33:15.793707] (info) [mocomdps] TG: MCPD A6 Dist6 (6025) Freq: 851.275000 MHz Not Recording: no source covering Freq
[2021-02-23 13:35:42.056147] (info) [mocomdps] TG: MCPD A6 Dist6 (6025) Freq: 851.275000 MHz Not Recording: no source covering FreqEDIT2: after more observation, it looks like sometimes there are double transmissions - the same transmission being broadcasted on both P16 and P25.
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- Joined
- Jul 4, 2007
- Messages
- 255
Hi!
Anyway, it's having some hiccups starting around the time PD cutover. I am working on correction.
This would be something that could be seen on Unitrunker configured to to monitor both systems. I'm trying to get out to the county sometime today to check it out, but they'll probably fix this pretty fast if the error is on their side.
- Joined
- Jul 4, 2007
- Messages
- 255
The P25 system should be reusing all the old frequencies. That was my issue - as the control channels flip, I am using the same set of dongles for both systems so I have to watch the CCs to move them in the config and restart. I noticed too much strange behavior if they shared the same CCs for both.
The P25 system is not going to use all of the SmartZone system frequencies. It will have a total of 13 channels, so some will not be reused in the TRS. And the SmartZone system will still be in use until all users move over by early March. Control channel management in the interim needs to be watched carefully.
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- Joined
- Jan 1, 2010
- Messages
- 129
What's the protocol here...any benefit to posting TGIDs as they pop up? I've got the SDS200 running in discovery mode against the previous control channels....
Asking because probably 99% of the people on this thread know more about this than I do!
Asking because probably 99% of the people on this thread know more about this than I do!
Mr_Boh
Member
As you find them, and know what they are, submit them to the database.
And if you dont know what they are feel free to add them to the unkwn section of this google sheet
MOCO P25 TGs
MOCO P25 TGs
Thanks @maus92 and @HarryWilly!
With more channels coming into the mix, instead of the current 6 channels listed in the RRDB, I'll wait until MCFRS is cutover to the P25, then change the config to switch between the two dongles I'm using. So, for the OpenMHz feed, it'll miss a few transmissions until I make the swap.
This is going to be a fun next few weeks!
With more channels coming into the mix, instead of the current 6 channels listed in the RRDB, I'll wait until MCFRS is cutover to the P25, then change the config to switch between the two dongles I'm using. So, for the OpenMHz feed, it'll miss a few transmissions until I make the swap.
This is going to be a fun next few weeks!
viggendriver
Member
- Joined
- May 3, 2020
- Messages
- 6
What control channel are you guys hitting? I'm trying 853.9375 and 853.6875 and getting nothing however I'm down in Tysons and might be too far South
This is not correct, once the transition is complete all 20 frequencies will be active on the new system. That is several weeks away.
Check out info from the MCFRS Chief on the new date of change for the FRS side and a brief glimpse at the new radio fleet map.
Thanks! Expect March 24th for the MCFRS cutover to the P25 system.
Mine is currently locked in on 853.6875, but it may retune to the other alternative CCs. It may also depend on your scanner's settings. With my Unication G5, it took me a while to figure why I wasn't receiving anything (or out of range) as I didn't set the RFFS/Site to 1/2 for P25. You could, also be just outside of the transmission range.What control channel are you guys hitting? I'm trying 853.9375 and 853.6875 and getting nothing however I'm down in Tysons and might be too far South
EDIT: Thinking further... isn't SmartZone a mixed analog/digital system? So going full digital (P25) may reduce the overall transmit/receive range outside the county in comparison to analog.