Maryland FIRST 700mhz TRS

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
8,662
Reaction score
2,480
Location
OCMD
As mentioned above, likely a Garrett County subscriber. The physical helicopters are rotated around for various reasons, so the RIDs may not always match the callsign.
 

druhe

Member
Premium Subscriber
Joined
Feb 18, 2003
Messages
749
Reaction score
170
Location
Southwest Pa
A radio ID that starts with 242 would be a Garrett County unit.

Helos would most likely be in MSP range starting with a 212

I believe the RID that I originally listed is Garrett County 911. Trooper 5 was dispatched to a scene in Somerset County Pa. There was a breakdown in communications where Trooper 5 could hear the ground unit, but the ground unit could not hear Trooper 5. RID 2420415 came up on the channel (no ID was monitored) and was relaying between the helo and ground unit. Once Trooper 5 lifted and was en route to the trauma center, the ground unit addressed "Garrett County" informing them the scene was secure and the incident was closed. This occurred on the ICORRS system and was not a patch.

The list of RIDs that I have is for Alleghany and Garrett Counties only and is very dated.
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
8,662
Reaction score
2,480
Location
OCMD
I believe the RID that I originally listed is Garrett County 911. Trooper 5 was dispatched to a scene in Somerset County Pa. There was a breakdown in communications where Trooper 5 could hear the ground unit, but the ground unit could not hear Trooper 5. RID 2420415 came up on the channel (no ID was monitored) and was relaying between the helo and ground unit. Once Trooper 5 lifted and was en route to the trauma center, the ground unit addressed "Garrett County" informing them the scene was secure and the incident was closed. This occurred on the ICORRS system and was not a patch.
What tg was in use for the Trooper and ground units? Or were they using a 700 A-G non-trunked frequency? Are you positive that no patches were in use? I'm curious if the MSP helicopter have ICORRS programmed into their radios. Some MSP helicopters don't even have Ocean City's medevac tg programmed, and DSP helos struggle with comms flying into MD. *SMH*
 

druhe

Member
Premium Subscriber
Joined
Feb 18, 2003
Messages
749
Reaction score
170
Location
Southwest Pa
What tg was in use for the Trooper and ground units? Or were they using a 700 A-G non-trunked frequency? Are you positive that no patches were in use? I'm curious if the MSP helicopter have ICORRS programmed into their radios. Some MSP helicopters don't even have Ocean City's medevac tg programmed, and DSP helos struggle with comms flying into MD. *SMH*
The TG was 1294 Somerset's Helo Ground. Definitely no patch, when Somerset does a patch there is a tone transmitted at the end of each tranmission, plus the RIDs do not display
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
8,662
Reaction score
2,480
Location
OCMD
If I am understanding your description correctly, RID 2420415 showed up on tg 1294 on ICORRS? If so, it's possible that Garrett 911 linked whatever tg Trooper 5 uses to communicate with Garrett 911 into ICORRS. This could be done several ways: "Patching" via a hard line of some sort, microwave, or positioning a FIRST radio / consolette at one of Somerset's sub-sites. It helps that they are both Motorola systems.
 

druhe

Member
Premium Subscriber
Joined
Feb 18, 2003
Messages
749
Reaction score
170
Location
Southwest Pa
If I am understanding your description correctly, RID 2420415 showed up on tg 1294 on ICORRS? If so, it's possible that Garrett 911 linked whatever tg Trooper 5 uses to communicate with Garrett 911 into ICORRS. This could be done several ways: "Patching" via a hard line of some sort, microwave, or positioning a FIRST radio / consolette at one of Somerset's sub-sites. It helps that they are both Motorola systems.
Your understanding is correct
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
8,662
Reaction score
2,480
Location
OCMD
I missed the June 18, 2025 radio control board meeting earlier this year. Here are the major items discussed:

New Interop Users.
- Aberdeen Proving Grounds: For Fire / EMS purposes when providing mutual aid to Cecil and Harford Counties, and surrounding waterways. Also wants access to the various MD TACs for future events. Approved.

- Middle Peninsula - Northern Neck Regional Radio System
Consists of 6 counties in Eastern Virginia:
King and Queen County
Essex County
Mathews County
Northumberland County
Lancaster County
Richmond County

For users to conduct coordination of operations and potential mutual aid on and within the Potomac River, Chesapeake Bay, and adjacent shoreline communities. They plan to have interoperability with St Mary’s County, Charles County, and Maryland agencies. The intent is to improve communications between responding resources operating in and on the waterways in these areas. MP has regional shared programming via console gateways and mobile/portables for approximately 500 interoperable subscribers. All radios are TDMA, Link
Layer Authentication capable, and include AES encryption. Approved.

-Hampshire County, West Virginia
Hampshire Cty borders southern Allegany County, Oldtown and Paw Paw areas. Hampshire is seeking direct
communications with Allegany County for mutual aid. They currently have 2 portables for Fire/EMS for direct communications with Allegany and are working on grant funding for an additional 12+ portables and 25+ mobiles. Hampshire would also include Allegany County and MD FiRST resources in their command vehicle for all surrounding counties. With the recent flooding in May, Allegany County struggled with multiple patches with communications. MD FiRST Interop would eliminate the need for these patches and improve communications withAllegany, NRP and DNR. Approved.

Proposed New Limited-Primary Users.

- District of Columbia (FEMS, MPD, HSEMA)
This is a joint application of DC Fire, EMS Department (FEMS), Metropolitan Police Department (MPD), and Homeland Security and Emergency Management Agency (HSEMA). DC is already an Interoperability User, the request is to upgrade to Limited-Primary for backup capabilities. The request is for 6 Talkgroups for intra-agency use only when needed as a backup if primary LMR infrastructure were to fail. This will improve their PACE plan.

3 TGs for FEMS
2 TGs for MPD
1 TG for HSEMA
District Radios: (all TDMA capable)
FEMS: 1250 Portables, 450 Mobiles
MPD: 3600 Portables, 1000 Mobiles
HSEMA: 130 Portables, 75 Mobiles

Approved.

Proposed New Primary Users.

- UMBC Police Department
The UMBC police department is a full service, 24 hr, 7 day a week police department serving the University of Maryland, Baltimore County Campus just outside Baltimore. It consists of approximately 25 sworn officers for the main and south campus areas. They have ~40 APX N50 or equivalent (TDMA capable) radios and are in the process of procuring more. UMBC PD is requesting ~2 Talkgroups: one for patrol operations and one for special events. They intend to establish TG sharing agreements with the University of Maryland, Baltimore, Baltimore County Police Department, and MSP. UMBC recently had a shooting across the street from campus and could not communicate with other agencies on the scene. MD FiRST will improve communications for future incidents. Approved.
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
8,662
Reaction score
2,480
Location
OCMD
Note that the below hasn't been adopted in many jurisdictions - they prefer direct ops on local systems.

Screenshot 2025-11-16 at 13-33-25 Slide 1 - MIEMSS_Communications_Systems_Overview.pdf.png
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
8,662
Reaction score
2,480
Location
OCMD
There was a successful mutli-agency search and rescue incident last night conducted on Marine Tac 14. A boater / hunter was reported overdue since 1530 or so, and his truck and boat trailer were located unoccupied at South Point boat ramp. At around 2130, DNR requested Ocean City Fire Boat 1 equipped with FLIR, multiple small boats from DNR and Worcester County, drones and eventually Trooper 6. After searching for about an hour or so, OC's fire boat observed a light source coming from a mud flat / marshy area south of South Point and near Assateauge Island and provided a lat/long. OC's fire boat approached but grounded on the flats, so Trooper 6 used their FLIR to ID the jonboat, and saw movement on the craft. Stockton's small boat was able to approach in the shallow water and effected the rescue. The victim was unharmed but cold, and was brought to the South Point boat ramp for evaluation by a Berlin EMS unit. The OC fire boat managed to free itself, and all units returned safely. NPS Rangers assisted from AINS. The USCG showed up after it was all over. All agencies were using the tac channel.

EDIT:

OCFD's Facebook post:

 
Last edited:

Dispatcher308

Member
Premium Subscriber
Joined
Jun 4, 2003
Messages
1,020
Reaction score
201
Location
Mountains of PA!
There was a successful mutli-agency search and rescue incident last night conducted on Marine Tac 14. A boater / hunter was reported overdue since 1530 or so, and his truck and boat trailer were located unoccupied at South Point boat ramp. At around 2130, DNR requested Ocean City Fire Boat 1 equipped with FLIR, multiple small boats from DNR and Worcester County, drones and eventually Trooper 6. After searching for about an hour or so, OC's fire boat observed a light source coming from a mud flat / marshy area south of South Point and near Assateauge Island and provided a lat/long. OC's fire boat approached but grounded on the flats, so Trooper 6 used their FLIR to ID the jonboat, and saw movement on the craft. Stockton's small boat was able to approach in the shallow water and effected the rescue. The victim was unharmed but cold, and was brought to the South Point boat ramp for evaluation by a Berlin EMS unit. The OC fire boat managed to free itself, and all units returned safely. NPS Rangers assisted from AINS. The USCG showed up after it was all over. All agencies were using the tac channel.

EDIT:

OCFD's Facebook post:

And that right there, ladies and gentlemen is how it's done. No muss, a little fuss!
 

Hbright

Active Member
Joined
Aug 9, 2018
Messages
1,389
Reaction score
2,536
Can someone explain TG 7554? It's labeled as MIC 1 on RRDB, but I'm certain that I've heard NRP units affiliate directly with DC TG 744.
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
8,662
Reaction score
2,480
Location
OCMD
Tg 8423 is busy in OC today. It falls between 8422 and 8424 which have been previously ID'd as DHS - HSI 1 & 2, so it stands to reason that it is a DHS related tg. Could be ICE or HSI I suppose. Plenty of undercover HSI types around town doing as they please. ENC of course.
 

ThePhotoGuy

Member
Premium Subscriber
Joined
Dec 11, 2011
Messages
2,275
Reaction score
424
Location
Maryland
Tg 8423 is busy in OC today. It falls between 8422 and 8424 which have been previously ID'd as DHS - HSI 1 & 2, so it stands to reason that it is a DHS related tg. Could be ICE or HSI I suppose. Plenty of undercover HSI types around town doing as they please. ENC of course.
I have seen that active on the Montgomery site before.

8425 has also popped up in the past week on the BC site (and I think AA too?).

When ICE was approved in 2019, they requested 4 talkgroups. Likely 8422, 8423, 8424, & 8425 are all ICE.
 

Hbright

Active Member
Joined
Aug 9, 2018
Messages
1,389
Reaction score
2,536
Tg 8423 is busy in OC today. It falls between 8422 and 8424 which have been previously ID'd as DHS - HSI 1 & 2, so it stands to reason that it is a DHS related tg. Could be ICE or HSI I suppose. Plenty of undercover HSI types around town doing as they please. ENC of course.
What are the RIDs?
 
Top