Lapeer's VHF freq is not encrypted.
MPSCS Sites/Talkgroups 2024
- Thread starter Thunderbolt
- Start date
I'd think it would make more sense to remove dispatch audio from the VHF side and have it just carry tones for informers, sirens, etc. Then again, I'm not a radio tech, so maybe there's another reason I'm unaware of.
RayAir
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Most of the radio ID's logged for 22891 appear to be associated with 22885 44E911 (EMS dispatch, also enc per database).
So most likely an EMS talkgroup of some type. Just guessing based on radio IDs.
I'm new to all this, but I am pretty sure that all of Oakland County Law Enforcement is encrypted. I'm not sure about the fire TGs
At a minimum, when using analog alerting, the dispatch audio needs to be carried after tones. This is what Novi is doing, but no other audio is carried on the analog side. (UHF for Novi, & VHF while they dispatch South Lyon or Lyon Twp.)
RayAir
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Fire has some encrypted talk groups but dispatch and fireground is clear.
Couple days ago REGD2N started to being allowed on Oakland County Simulcast greatly improving coverage for MSP units in the county. It is my understanding it is allowed in mixed (FDMA/TDMA) mode.
If a subscriber radio that is currently affiliated is not P2 capable, the TG is carried as P1.
It depends on the type of encryption used. The old systems used the CFB mode, which is an error propagation mode: a single bit received with error makes it impossible to decrypt the entire frame. The range is therefore reduced: as soon as a single bit received with error, nothing is received.
Block cipher mode of operation - Wikipedia
New systems use OFB mode which is a mode without error propagation, a single bit received with error, gives a single error bit after decryption. The range is therefore not reduced, we simply receive with a few bits in error and therefore with a worse sound.
Block cipher mode of operation - Wikipedia
Today 4153 was referred to as "CGFire" and "Camp Fire"... DNR was doing a controlled burn on Range 30 today. The database calls it "Alpena CRTC Fire Dispatch" Does the database need to be updated? Units were Grayling and Houghton Lake DNR.
dmchalmers
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Heard some of that also, air references the drones also . I just couldn't figure where they were at. some reason Air5 didn't show on flightaware. I'm 15 east of the ranges
4400 - 928 RIDs. I think this may be Dean Transportation out of Traverse City. For some reason, this TG only wants to come in if I'm stationary somewhere, so I've had a hard time truly confirming what exactly it is.
Dean does a lot of school bus staffing, so expect the appropriate times for that.
I was picking it up off the Traverse City site yesterday, and they were talking about Transformers and Power Distribution lines, so I don't think it's Dean Transportation. Might belong to TC Light & Power.
Construction has started on the tower at the Isabella County Central Dispatch. A concrete base has been placed on the east side of the building.
I have heard 76 on this talk group also . 76 is the Camp Grayling military fire chief. I think it's safe to say this TG should be switched to CGFire. I'm going to submit a change request today to the database.
TG 13083-Life EMS 801 calling Lake County Central Dispatch(New console RID 3000086) to tell them that they were returning from Big Rapids.
Noted with HP2 Discovery Mode on the Big Rapids tower.
Noted with HP2 Discovery Mode on the Big Rapids tower.
DVINTHEHOUSEMAN
Up North
Holding the air typically means stop all traffic unless it's emergency traffic or to stop all traffic for a special announcement.
1011 has Emmet and Cheboygan Counties RIDs on it, G-EVENT02. Not sure what exactly it's being used for, as it's only come up once or twice for me today off River Central and Rapid City.
22:55 Update: Units are referring to themselves as '701' (Cheboygan) and '703' (Emmet).
22:55 Update: Units are referring to themselves as '701' (Cheboygan) and '703' (Emmet).
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