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First Responders Interoperable Radio System Team (FIRST)

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Revision as of 15:32, 24 September 2013 by Troymail (talk | contribs) (→‎Unit Ids)

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Site ID Info

Call Sign(s)


  • WPTZ805 Maryland State License
  • WQOV744 Anne Arundel County
  • WQQJ424 Dorchester County
  • WQQJ421 Dorchester County
  • WQQJ423 Wicomico County
  • WQQI659 Ocean City (Worcester County)
  • WQQI649 Caroline County
  • WQRD793 Air-to-ground repeater (Dundalk Marine Terminal; conventional)
  • WQSB868 Air-to-ground repeater (Salisbury)
  • WQRJ980 Air-to-ground mobiles (conventional)

(Note: some data - including callsigns - comes from fcc.gov/uls. Some frequency assignment information found there has been determined to be inaccurate. CAPRAD (click on the "Vistor" link on the right side of the page) has proven to be more accurate when it comes to frequency assignments to various Counties. Of course, the true test/confirmation is done by running a tool like Pro96Com or Unitrunker to check an active control channel frequency).

MdTA Nice and ICC detachments are operating on their respective local county trunked systems. They will be patched to their assigned talkgroups on FiRST, but only if and when a FiRST native user monitors those talkgroups. This will remain in effect until Phase 3 of FiRST comes online covering metropolitan Maryland.

Air to Ground Frequencies (conventional)

Noted in installation testing the week of 10 June 2013 and then in flight testing on 24 June

  • 770.13125 7AIR67 SYSCOM Air to Ground
  • 769.63125 7AIR60 SYSCOM Air to Ground

Unit Ids

Activity on various systems including Maryland FiRST (Prince George, Baltimore County, and CMARC) suggest that statewide radio ids appear to be assigned in blocks going (mostly) alphabetically.

  • 123xxxx believed to be Federal / possibly DHS / these IDs appear be now use TGIDs 8126, 8127, and 8128 as of early May 2013 - sometimes in the clear but mostly encrypted / callsigns of the users have also been heard on FPS Balt 1 (410.8Mhz)


  • 2154xxx (TG 7851/2 - 13 June 2013 - users? testing in the Annapolis/Rt 50 area)
  • 215xxxx noted on the Ft Meade NCR system
  • 217xxxx


  • 222xxxx Anne Arundel


  • 224xxxx Baltimore County
  • 225xxxx Baltimore County


  • 226xxxx Baltimore City
  • 227xxxx Baltimore City


  • TBDxxxx Calvert


  • TBDxxxx Caroline


  • 232xxxx Carroll


  • 234xxxx Cecil (noted testing with Md FiRST PMO on Admin TG 4 9/11 using a Harris Unity radio)


  • 236xxxx Charles


  • TBDxxxx Dorchester


  • 240xxxx Frederick
  • 241xxxx Frederick


  • TBDxxxx Garrett


  • 245xxxx Harford


  • 246xxxx Howard


  • 248xxxx Kent
  • 249xxxx Kent


  • 250xxxx Montgomery


  • 252xxxx Prince George


  • TBDxxxx Queen Anne


  • TBDxxxx Somerset


  • 258xxxx St. Mary's (detected on the St. Mary's P25 system - 8/5/13)


  • TBDxxxx Talbot


  • 262xxxx Washington
  • 263xxxx


  • TBDxxxx Wicomico


  • 266xxxx Worcester


State assets look like 211 and may go all the way to 220 or 221.... So far it's mostly 211 and 212 and some 215.

Virginia appears to be 3xxxxxx --

  • 310xxxx Alexandria (York PA is using this range also)
  • 318xxxx Fairfax....
  • 324xxxx Loudon
  • 325xxxx Loudon
  • 326xxxx Loudon


Some of the oddballs --

1000xxx IDs are present on both Maryland Aviation (BWI) and Prince George County (dispatchers) -- on the other hand, these are dispatcher consoles -- not much risk they'll be crossing into a neighboring jurisdiction on a response....

Several IDs of 129999x have been heard testing on Maryland FiRST - unknown users at this time.


Obviously there's more to learn and confirm but you can see the pattern....

Maryland FiRST Radio IDs (RIDs)

RIDs identified using PSR-800: Labels include agency and unit number, organized by sequential numeric RID. This list will be drawn-down for agencies that do not carry vehicle-specific portable radios, as there tend to be no consistent unit IDs for those agencies (Maryland State agency IDs tend to be vehicle plate numbers). Sequence/badge IDs will not be included in the event they issue take-home radios.

A list of all radio ID ranges in the State of Maryland can be found here.

MdTAP Patrol Division issues take-home portables (2116600-2117251): these are being drawn down as they are confirmed. MdTAP mobile radios have been recorded in the 2117600-2117900 series. MdTAP Special Operations units (SOD, K9, CV) appear to have assigned/take-home vehicles. Thus, portable IDs will match vehicle/post numbers.

MdTA Unit Prefixes as follows:

  • K = KEY Bridge Detachment
  • P = PORT of Baltimore Detachment
  • T = FMT McHenry and Harbor Tunnel Detachment
  • L = WP Lane BAY Bridge Detachment
  • CV = Commercial Vehicles Unit
  • TC = Tunnel Command (Vehicle Plate Designations for FMT)
  • HQ = Headquarters
  • K9[#] = K9 Units
  • SOD = Special Operations Division
  • MRN = Marine Unit
  • MTR = Motor(cycle) Unit

MdTA Authority Operations Center [AOC] AOC is MdTA's Traffic Management Center, responsible for managing all MdTA roadway traffic flows, maintenance traffic, and signboard operation. They also monitor many MdTA roadways with remote cameras.

  • 2116500 MDTA AOC
  • 2116501 MDTA AOC

MdTA Central Communications 'Communications' is universally referred to by that word, but often called "PORT" by PORT/FSK units on their TG and "STATION" by BAY units on their TG.

  • 2116502 MDTAP PRTCOMM
  • 2116503 MDTAP PRTCOMM
  • 2116504 MDTAP FMTCOMM
  • 2116505 MDTAP PRTCOMM
  • 2116506 MDTAP PRTCOMM
  • 2116507 MDTAP FMTCOMM
  • 2116510 MDTAP FMTCOMM
  • 2116511 MDTAP FMTCOMM
  • 2116514 MDTAP BAYCOMM
  • 2116515 MDTAP BAYCOMM

MdTA Facilities

  • 2116516 MDTAP BAY STN (Bay Bridge Detachment Station)
  • 2116571 MDTAP BWI SIMULCAST (from MAA P25 system)
  • 2116582 MDTA FRFLD 895 (Fairfield Toll, I-895 South End)
  • 2116583 MDTA KEYBR 695 (Key Bridge, I-695)
  • 2116586 MDTA AOC
  • 2116587 MDTA BAY E SCALE (Bay Bridge East Weight Scales)
  • 2116590 MDTA VRT 810

MdTAP Francis Scott Key Bridge (I-695) Detachment

  • 2116693-2116698 MDTAP KEY
  • 2116700 MDTAP SOD48
  • 2116701 MDTAP K7
  • 2116702 MDTAP K7 (duplicate)
  • 2116703 MDTAP KEY STN (Key Station HQ)
  • 2116705-2116708 MDTAP KEY
  • 2116709 MDTAP CV18

MdTAP Headquarters/Command

  • 2116711 MDTAP HQ5
  • 2116712 MDTAP HQ41
  • 2116715 MDTAP HQ40
  • 2116722 MDTAP HQ15
  • 2116723 MDTAP HQ22
  • 2116733 MDTAP HQ17
  • 2116734 MDTAP HQ21
  • 2116744 MDTAP FMT
  • 2116745 MDTAP HQ10
  • 2116747 MDTAP K2

MdTAP Port of Baltimore Detachment

  • 2116752 - 2116755 MDTAP PORT
  • 2116756 MDTAP MRN1
  • 2116757 - 2116783 MDTAP PORT
  • 2116816 - 2116822 MDTAP PORT

MdTAP Fort McHenry Tunnel/Harbor Tunnel/Tunnel Command Detachment (I-95 I-895)

  • 2116861 - 2116877 MDTAP FMT
  • 2116879 MDTAP K95

MdTAP Miscellaneous

  • 2116881 - 2116891 MDTAP FMT
  • 2116892 MDTAP K94
  • 2116894 - 2116897 MDTAP FMT
  • 2116899 MDTAP K94 (duplicate)
  • 2116902 - 2116912 MDTAP FMT
  • 2116914 MDTAP K910
  • 2116915 - 2116925 MDTAP FMT

MdTAP Commercial Vehicles Unit

  • 2116926 MDTAP CV20
  • 2116930 MDTAP CV5
  • 2116933 MDTAP CV7
  • 2116934 MDTA BAY W SCALE
  • 2116936 MDTAP CV9
  • 2116938 MDTAP CV22
  • 2116945 MDTAP CV21
  • 2116952 MDTAP CV22

MdTAP Miscellaneous Special (SOD, K9, Marine, Motor)

  • 2116962 MDTAP SOD1
  • 2116966 MDTAP K915
  • 2116968 MDTAP SOD29
  • 2116969 MDTAP MTR3
  • 2116971 MDTAP SOD35
  • 2116974 MDTAP K913
  • 2116976 MDTAP FMT
  • 2116980 MDTAP SOD28
  • 2116981 MDTAP MTR4
  • 2116982 MDTAP K912/SOD25
  • 2116983 MDTAP K914
  • 2116984 MDTAP K916
  • 2116985 MDTAP MRN1
  • 2116986 MDTAP K918
  • 2116987 MDTAP MRN1 (duplicate)
  • 2116988 MDTAP K912 (duplicate)
  • 2116990 MDTAP SOD8
  • 2116994 MDTAP MTR6
  • 2116999 MDTA VRT 800

MdTAP W.P. Lane Bay Bridge Detachment (US 50)

  • 2117001 - 2117007 MDTAP BAY
  • 2117008 MDTAP L9/K96
  • 2117009 - 2117028 MDTAP BAY

MdTAP Miscellaneous

  • 2117037 MDTAP K98
  • 2117054 MDTAP PRT
  • 2117056 MDTAP K918
  • 2117117 MDTAP SOD19
  • 2117127 MDTAP BWI3
  • 2117129 MDTAP K97
  • 2117135 MDTAP K12
  • 2117150 MDTAP P11
  • 2117162 MDTAP B8
  • 2117173 MDTAP FMT
  • 2117179 MDTAP [ICC UNIT UNK]
  • 2117180 MDTAP L8
  • 2117239 MDTAP CV29
  • 2117241 MDTAP HQ21
  • 2117248 MDTAP HQ9
  • 2117251 MDTAP CV8

MdTA AOC, Maintenance and Bridge Inspectors/Engineers, VRT Trucks (Vehicle Removal Technicians)

  • 2117257 MDTA AOC
  • 2117258 MDTA AOC
  • 2117265 MDTA INSPECTOR
  • 2117268 MDTA INSPECTOR 1
  • 2117270 MDTA INSPECTOR
  • 2117272 MDTA INSPECTOR
  • 2117273 MDTA INSPECTOR 8
  • 2117274 MDTA INSPECTOR
  • 2117275 MDTA INSPECTOR
  • 2117281 MDTA FSK MAINT
  • 2117285 MDTA CUBY DRAWBR (Curtis Bay Drawbridge Tender I-695)
  • 2117286 MDTA MAINT 163
  • 2117287 MDTA MAINT 161
  • 2117302 MDTA MAINT 106
  • 2117304 MSP MV50
  • 2117306 MDTA MAINT 141
  • 2117308 MDTA MAINT 141
  • 2117309 MDTA MAINT 130
  • 2117310 MDTA MAINT
  • 2117312 MDTA MAINT 128
  • 2117350 MDTA VRT 3 819
  • 2117352 MDTA VRT 820
  • 2117353 MDTA VRT 3 821
  • 2117354 MDTA VRT 828
  • 2117359 MDTA VRT 807/302
  • 2117360 MDTA VRT 303
  • 2117361 MDTA MAINT 309
  • 2117362 MDTA MAINT
  • 2117363 MDTA MAINT 310
  • 2117364 MDTA MAINT 306
  • 2117366 MDTA MAINT 306
  • 2117368 MDTA MAINT 399
  • 2117369 MDTA MAINT 300
  • 2117370 MDTA MAINT 301
  • 2117371 MDTA AOC
  • 2117372 MDTA VRT 829
  • 2117373 MDTA VRT 807/803
  • 2117374 MDTA VRT 829/803
  • 2117375 MDTA AOC
  • 2117379 MDTA VRT 805
  • 2117381 MDTA BAY TOLLSUP (Bay Bridge Toll Shift Supervisor)

MdTA JFK Division (CV and Maintenance)

  • 2117411 MDTAP CV UNK JFK
  • 2117412 MDTAP CV1 JFK
  • 2117413 MDTAP CV2 JFK
  • 2117414 MDTAP CV3 JFK
  • 2117415 MDTAP CV5 JFK
  • 2117426 MDTAP JFK MAINT

MdTAP Miscellaneous (including mobile radios)

  • 2117606 MDTAP K7
  • 2117608 MDTAP K11
  • 2117610 MDTAP K13
  • 2117612 MDTAP K15
  • 2117667 MDTAP P1
  • 2117670 MDTAP P5
  • 2117673 MDTAP P8
  • 2117676 MDTAP P11
  • 2117678 MDTAP P14
  • 2117679 MDTAP P15
  • 2117698 MDTAP CV29
  • 2117719 MDTAP SOD5
  • 2117725 MDTAP SOD13
  • 2117735 MDTAP FMT
  • 2117736 MDTAP SOD9
  • 2117744 MDTAP SOD26
  • 2117749 MDTAP MTR5
  • 2117771 MDTAP K94
  • 2117774 - 2117794 MDTAP FMT
  • 2117813 MDTAP L5
  • 2117814 MDTAP L6
  • 2117816 MDTAP L8
  • 2117820 MDTAP L15
  • 2117825 MDTAP CV21

MdTA Maintenance/Unknown

  • 2117964 MDTA 135
  • 2118051 MDTA 730

MdTA VRT Trucks

  • 2118082 MDTA VRT 813
  • 2118085 MDTA VRT 819
  • 2118086 MDTA VRT 821
  • 2118087 MDTA VRT 823
  • 2118088 MDTA VRT 824
  • 2118090 MDTA VRT 828
  • 2118091 MDTA VRT 834
  • 2118093 MDTA VRT 837
  • 2118094 MDTA VRT 838
  • 2118098 MDTA VRT 822

MdTA Maintenance/Unknown

  • 2118197 MDTA 405
  • 2118257 MDTA 427
  • 2118270 MDTA 432

Maryland State Police, Barrack M (I-95 JFK Highway) Barrack M of the Maryland State Police patrols the I-95 corridor from the Baltimore City line (mile 60.5) to the Delaware line (mile 109) on lease from the Maryland Transportation Administration, which owns and administers the roadway. MSP trooper radio IDs are the same as their assigned vehicle plates: therefore portables are ID-specific and are listed here. Portables are believed to be in the 2124xxx range, with mobiles in the 2128xxx range.

  • 2124725 MSP M3
  • 2124732 MSP M12
  • 2124735 MSP M15
  • 2124742 MSP M23
  • 2124743 MSP M24
  • 2124752 MSP M34
  • 2124753 MSP M50
  • 2124756 MSP M38
  • 2124762 MSP K940
  • 2124768 MSP M40
  • 2124770 MSP M35/M14
  • 2124771 MSP M51
  • 2124784 MSP M MV50

MSP M Communications Over the air, MSP M identifies as the callsign 'HIGHWAY'.

  • 2127101 MSP M HWY
  • 2127102 MSP M HWY

MSP M Suspected Mobiles

  • 2128001 MSP M1
  • 2128003 MSP M3
  • 2128004 MSP M4
  • 2128005 MSP M5
  • 2128007 MSP M7
  • 2128013 MSP M15
  • 2128014 MSP M16
  • 2128018 MSP M21
  • 2128019 MSP M22
  • 2128027 MSP M31 (dup)
  • 2128029 MSP M33
  • 2128030 MSP M30
  • 2128031 MSP M31
  • 2128036 MSP M40
  • 2128038 MSP M42
  • 2128043 MSP M49
  • 2128044 MSP M50
  • 2128047 MSP M42 (dup)
  • 2128048 MSP M K943
  • 2128050 MSP M K930
  • 2128059 MSP M11

Kent County Fire Department

  • 2480175 KCFD REP 3 (Rescue Pumper)
  • 2480200 KCFD TNK 3 (Tanker)

Kent County Sheriffs Office

  • 2480572 KCSO K11
  • 2480596 KCSO K23
  • 2480634 KCSO C62
  • 24807xx KCSO Detention Center Units

Kent County Communications

  • 2490001 KCFD DISP
  • 2490002 KCFD DISP


Talkgroups seen between late August and late October 2012 (using Pro96Com against Baltimore and Anne Arundel sites)

7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7120 7121 7122 7123 7124 7125 7126 7127 7129 7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7143 7144 7145 7146 7147 7148 7149 7150 7151 7152 7155 7156 7157 7158 7160 7162 7163 7164 7165 7166 7167 7168 7169 7170 7171 7172 7174 7175 7176 7301 7302 7303 7304 7305 7306 7307 7308 7309 7310 7312 7313 7314 7315 7316 7317 7327 7328 7329 7330 7331 7332 7334 7335 7336 7337 7345 7346 7347 7348 7357 7358 7360 7361 7363 7372 7375 7376 7395 7501 7502 7505 7506 7508 7509 7510 8101 8102 8103 8104 8106 8109 8110 8113 8114 8118 8119 8120 8126 8127 8128 8561 8562 8563 8564 8566 8567 8568 8591 8592 8593 8600 12811 12813 12815 12818

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