AFAIK it is still a recommended practice to have a seperate radio system for personnel alerting, although I'm not sure of the exact wording of NFPA 1221 wrt paging. A competitor to Unication has a different view:
P25 alerting is a different thing from what you're thinking of. P25 alerting is done in system outbound data signalling and not by audible tones on a voice talkgroup. With the licenses (cha-CHING) and setup in place, I could group-alert 100 people with a job over a P25 system and someone with a scanner listening for voice traffic wouldn't have a clue. It's a lovely concept, but the implementation is clunky in the system architecture I'm familiar with, and it's expensive as hell both for infrastructure and subscriber costs.
Those audible tones linked seem to be just attention-getting alert tones, not functional pages. Most sound very similar (or identical to) alert tones from the old Zetron paging consoles we had at a prior employer of mine. That honking-sneeze one is the odd one out that I haven't heard before.
boatbod
Member
Talbot is actively using 700Mhz paging via FiRST in areas where legacy VHF coverage is poor. I've been using a G5 in that role for well over a year now and been very happy with the results. It's way better than VHF but cost would definitely be a factor if you have to equip an entire department with $600+ G4/G5 pagers vs $325 Minitor/G1 analog pagers.
When looking at the RIDs I see that many end in x's. What do they mean and how can I enter those into my SDR Trunk?
I am ok with using the ranges to save me from inputting each RID manually.
wiki.radioreference.com
I am ok with using the ranges to save me from inputting each RID manually.
Maryland Statewide Trunking Interoperability Radio IDs - The RadioReference Wiki
The x's are variables and simply denote a range. As for how to enter in SDR Trunk, I can't help you with that.When looking at the RIDs I see that many end in x's. What do they mean and how can I enter those into my SDR Trunk?
I am ok with using the ranges to save me from inputting each RID manually.
Maryland Statewide Trunking Interoperability Radio IDs - The RadioReference Wiki
I thought that it was that but just wanted to check to make sure. And pretty sure I figured out how to enter them. If it says 21199xx that means its 2119900-2119999 correct?
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Is 7648 MIEMSS Helimed the talkgroup used for MSP to advice Shock Trauma what they are coming in with? Basically a dedicated MIEMSS Med channel for the Troopers? I've been monitoring it for the past few days an haven't heard anything.
The 700MHz Helimed tg is not commonly used. The Syscom tg has some piss poor audio, so I would expect the same for Helimed; they *might* just be using the lowband Helimed channel for consults.
Very rarely do I ever hear the Helimed talkgroup on Anne Arundel or Baltimore Sites. I have seen it more times active on QA and Talbot Sites. Might be used more with helos on the shore.
Hi all...I admit, I have not followed this thread in a while, but I have been tracking the MD FIRST system from the Lambs Knoll ASR in Washington County. I've been monitoring it for the past 30 days or so and have logged many undocumented TG's. Anyone want to take a stab at what they are? I have concatenated all the Pro96Com csv files into one spreadsheet and then filtered out the undocumented groups with their respective radio id's that have affiliated on them. Attached is the sheet saved to a PDF file. Thoughts?
Here's my very rough interpretation of your TG list 
| SHA ? 7251 |
| SHA ? 7252 |
| SHA ? 7253 |
| SHA ? 7258 |
| SHA ? 7270 |
| SHA ? 7273 |
| SHA ? 7276 |
| SHA ? 7281 |
| MSP ? 7345 |
| MSP ? 7346 |
| MSP Tac? 7403 |
| MSP Tac? 7418 |
| DNR Northern Forestry 7538 |
| DNR Burn Ops? 7540 |
| MIEMSS ? 7629 |
| MIEMSS ? 7631 |
| MIEMSS ? 7654 |
| MIEMSS ? 7655 Enc |
| MIEMSS ? 7656 |
| MIEMSS ? 7659 Enc |
| MIEMSS ? 7660 |
| MD Interop? 8104 |
| DHMH ? 8179 |
| DHMH ? 8180 |
| DHMH ? 8191 |
| DHMH ? 8192 |
| DHMH ? 8194 |
| DHMH Stockpile Distribution 8195 |
| DHMH ? 8197 |
| DHMH ? 8198 |
| MD Aviation Tac? 8311 Enc |
| MD Interop? 8316 Enc |
| MD Interop? 8319 |
| DNR ? State Park 8383 |
| MD Federal? 8415 |
| MD Federal? 8416 |
| FIRST ? 8511 |
| FIRST Radio Tech? 8516 |
| Washington Co ? 13024 |
| Washington Co ? 13141 |
| Washington Co ? 13258 |
| Washington Co ? 13593 |
| Washington Co ? 13594 |
| Washington Co Fire/EMS Dispatch (Patch of TG 13463) 13595 |
| Washington Co Hagerstown PD (Patch of TG 13557)? 13596 Enc |
| Washington Co Highways? 13599 |
| Washington Co Sheriff Patrol Division (Patch of TG 13428) 13600 Enc |
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BM82557
Member
Here's my very rough interpretation of your TG list
DNR ? State Park 8383
I've copied traffic on TG 8383 referring to locations on the Western Maryland Rail Trail
Ok everyone. If you could please post what set up you are using to monitor the MD 1st system i would grateful. Since the system is not here in Monkey County I do have a Yagi Antenna aimed at the Howard county antenna and am picking it up just fine..
Fort Frederick?
Western Maryland Rail Trail
c/o Fort Frederick State Park
11100 Fort Frederick Road
Big Pool MD 21711
Notes:
Washington County
13599 - MSP RIDs
13596 - MSP RIDs, RID 2124582 uses syscom 7640 TG
13594 - MSP RIDs
13593 - MSP RIDs
State
8516 - RID 2128491 is usually on this TG, but sometimes MSP, MD Tac 8, SYSCOM, MSP RID range, prob MSP radio tech
8511 - MSP RIDs, likely MSP radio tech
8319 - RIDs assoc w/ DPSCS prisoner transport
8316 - RIDs assoc w/ DPSCS prisoner transport
8311 - RID FIRST / MSP radio tech; usually on tg 7455
Feds
8416 - Fed RIDs closely spaced, likely a single agency, unid
8415 - Fed RIDs closely spaced, likely a single agency, unid
Would that be these? HELICOPTER DISPATCH 44.74 MHz and HELICOPTER MEDICAL 47.66 MHz
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Yes. Helimed is 47.66
The reason for the poor audio is that the medic uses a portable subscriber to talk on FIRST when in the helicopter, with an earpiece and a handheld mic. Super kludgey.
BM82557
Member
Yes, that is the one.
Hopefully that will eventually change.
Can we agree to get any of these new discoveries into the DB?
