Contact Chattanooga Medcomm


MedComm Radio Channels 

Routing Channels
TN State EMS (VEMS205) - 155.205 Mhz
MEDCOM-1 - TVRCS Talk Group 

Patient Report
H.E.A.R. Frequency (VMED28) - 155.340 Mhz
Individual Hospital TVRCS Talk Groups 

Initially, the MedComm routing channel for all incoming radio traffic will be the VEMS205 (Tennessee State EMS) or Tennessee Valley Radio Communication System Talkgroup MEDCOM-1. Radio traffic will be routed to VMED28 or the assigned TVRCS hospital talkgroup.

Phone Access

As a secondary access route, phone access is available at 423-778-9633. This line is monitored and recorded for your further assistance and quality assurance.

Call-In Radio Information


When accessing Chattanooga MedComm, use plain language in radio transmissions. Ambulances transporting patient(s) to any of the hospitals in Hamilton County are asked to call-in on the designated routing channel with the following: 

  • Unit ID 
  • Destination Hospital 
  • Type / Priority Traffic 
  • Chief Complaint
  • If Physician orders are needed 

If the assigned frequency for the destination hospital is clear, the unit will be routed to that frequency. If the frequency for the destination hospital is not clear, MedComm will ask the unit to follow next in line. If multiple units are holding for an available channel,  MedComm will relay any emergency reports to the ED.  

To minimize ambulance to hospital radio transmission air time, a brief, but concise, radio report format is as follows:

Radio Report Format


The following is a recommended format for radio reporting of patient status. The radio report is designed to allow triage decisions to be made or to request orders beyond the protocol. Radio reports will be abbreviated to the following pertinent pieces of information. The radio report should be given in approximately 30 seconds or less. The concept is to maximize the report to essential conversation in reporting patient status and reduce air time use on the radio frequency. 

  1. Ambulance Service and unit number 
  2. Name of Paramedic (if requesting orders) 
  3. Patient's age
  4. Chief complaint or mechanism of injury 
  5. Most recent vital signs if not within normal limits 
  6. Only pertinent history that will affect triage status 
  7. Estimated time of arrival 

Communications to request essential medical orders beyond protocols is allowed. If physician orders are needed, or if there is a problem contacting he destination hospital after the unit is routed, MedComm will contact the destination hospital Emergency Department by phone and advise of the units request. The MedComm Coordinator will CAD the following: 

  • Date / Time of request 
  • Unit ID
  • Destination hospital 
  • Chief Compliant/MOI 
  • If there were MD orders given, which physician