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Lyon County (IA)

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Lyon County, Iowa
FIPS County Number 19119
County Seat Rock Rapids
ISP District 6
ISP HQ City Spencer
IA DOT District {{{IA DOT District}}}
DNR Enforcement District 1
EMS Region 3A
FBI Division {{{FBI HQ}}}
FBI Resident Agency {{{FBI RA}}}
Lyon County database
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Welcome to the Lyon County, Iowa collaboration article. This is where you, the user, may index any articles you develop for scanning related topics for your area.

Other Geographical Information

  • ISP State Radio = Storm Lake
  • ISP/LEA Repeater = Matlock
  • Iowa DOT District = 3
  • DPH Region = 3
  • EMA Region = 3
  • FBI Division = Omaha

News and News Archive

  • UPDATE: As of 8/1/13, Lyon County Sheriff Dispatch is P25 digital, with a NAC of 67.

Recommended Scanning

Frequency Input Output Tone Input Tone if different Usage
156.2100 154.9500 025 DPL Sheriff Dispatch - Analog
156.2100 154.9500 067 NAC Sheriff Dispatch - P25
152.5100 simplex 703 DPL Lyon Co Jail
154.1600 153.7400 127.3 PL 156.7 PL Fire East (George)
154.1600 153.7400 127.3 PL 103.5 PL Fire West
154.1600 153.7400 127.3 PL 141.3 PL Fire South (Doon)
154.1600 153.7400 127.3 PL 107.2 PL Fire Central (Rock Rapids)
154.1600 153.7400 127.3 PL 94.8 PL Fire Little Rock
154.1600 simplex CSQ Fire Talkaround
155.4000 simplex 82.5 PL Regional EMS -- Lyon Co. Ambulance Paging
155.3400 simplex 82.5 PL EMS 340 -- Lyon Co. Ambulance to hospital
155.3400 simplex CSQ Statewide EMS
155.3400 simplex 210.7 PL MN HEAR (tone used by George, IA EMS)
155.0250 158.8650 MotoTrbo CC 1 TS 1 ID 00000139 Road Department-DMR
155.3700 simplex CSQ Point-to-Point
155.4750 simplex CSQ Mutual Aid or VLAW31
155.6400 154.6500 167.9 PL DPS Matlock (State Patrol & Other Agencies)
155.7900 154.7700 167.9PL Matlock LEA
462.9500 467.9500 162.2PL Avera Careflight Helicopter (Sioux Falls)
462.9750 462.9750 162.2PL Sanford AirMed 9 Helicopter (Sioux Falls)
159.1950 156.1050 33 NAC Iowa DOT Rock Rapids Shed Repeater
122.8000 simplex AM MODE Rock Rapids Airport Unicom
151.2275 159.0525 unknown Central Lyon Schools Repeater
155.2950 simplex 118.8PL Central Lyon Schools Simplex
451.4250 456.4250 MotoTrbo CC 1 TS 1 ID 00000118 Lyon Rural Electric Coop (DMR)

County Unit ID's

  • 60-1 Sheriff
  • 60-2 Chief Deputy
  • 60-3 Deputy (Rock Rapids focus -- PD eliminated)
  • 60-4 Deputy
  • 60-5 Deputy
  • 60-6 Duty Jailer
  • 60-7 through 60-13 -- Deputies
  • 60-14 through 60-16 Conservation Officers
  • 60-18 Deputy


Law Enforcement Agencies

  • Lyon County Sheriff's Office
  • Lyon County Conservation Board

Lyon County Law Enforcement Website

Fire Departments

EMS Agencies

Ambulance (transport):

  • Lyon County Ambulance (paged on 155.400, dispatch/hospital comms on 155.340)
  • Canton-Inwood Ambulance (Fire West Tower and Lincoln Co SD Fire 154.445)
  • Little Rock Ambulance (Fire East Tower)(dispatch/hospital comms on 155.340)

EMS (no transport):

  • George Emergency Medical Service (GEMS) (Fire East Tower, dispatch/hospital comms on 155.340)
  • Larchwood Emergency Medical Service (LEMS) (Fire West Tower, dispatch/hospital comms on 155.340)

Rescue Units:

  • Alvord Rescue (now just First Responders) (Fire West Tower)
  • Doon Rescue (Fire South Tower)
  • Inwood Rescue (Fire West Tower)
  • Lester Rescue (Fire West Tower)
  • Rock Rapids Fire Rescue (Central Fire Tower)

Scanning Ambulance Communications In Lyon County

In Lyon County, the Lyon County Ambulance is paged on 155.400 / 82.5 PL (called Regional EMS or EMS 400).

However, the ambulances talk to dispatch and the only hospital in the county -- Merrill Pioneer Hospital Avera (in Rock Rapids -- called "Avera Rock Rapids" on the radio) -- on 155.340 (called Statewide EMS or EMS 340) The Lyon County Ambulance, Lyon County Dispatch, and Sanford use 82.5 PL, some others use 210.7 PL -- but all on 155.340. As far as I can tell, no one uses CSQ. The callsign WRA644 is correct for Lyon Co. dispatch on both 155.400 and 155.340.

(In the counties to the south and east, 155.400 / 82.5 PL is used for ambulance to hospital communication and communication with their dispatch is either on that frequency or on fire frequencies. If these ambulances come through Lyon county they may contact Lyon County Dispatch on this frequency. Since it's not used much for two-way communication in the county it usually takes dispatch a moment or two to find the right channel.)

The names are a little confusing too as "Regional EMS" is used in the surrounding Iowa counties, but "Statewide EMS" is used also in MN and SD!

Trunked Radio Systems

Important RACOM Talkgroups

  • 1273 DEC / 09-151 AFS Iowa Emergency Management, District 3 (Includes Lyon County, and Lyon EMA has been monitored.)
  • 527 DEC / 04-017 AFS Iowa Department of Public Health, District 3 (Includes Lyon County, and Health Services Of Lyon County and the Rock Rapids hospital have been monitored.)
  • All "LEIN" talkgroups