Difference between revisions of "Emergency Medical Services Radio"
From The RadioReference Wiki
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150.7900 N/A EMS ([[simplex]]) | 150.7900 N/A EMS ([[simplex]]) | ||
152.0075 N/A EMS (paging) | 152.0075 N/A EMS (paging) | ||
− | 155.1600 N/A EMS | + | 155.1600 N/A EMS (also a common SAR frequency) |
155.1750 N/A EMS | 155.1750 N/A EMS | ||
155.2050 N/A EMS | 155.2050 N/A EMS |
Revision as of 18:58, 2 July 2006
VHF Frequencies
150.7750 N/A EMS (simplex) 150.7900 N/A EMS (simplex) 152.0075 N/A EMS (paging) 155.1600 N/A EMS (also a common SAR frequency) 155.1750 N/A EMS 155.2050 N/A EMS 155.2200 N/A EMS 155.2350 N/A EMS 155.2650 N/A EMS 155.2800 N/A EMS 155.2950 N/A EMS 155.3250 N/A EMS 155.3400 N/A EMS to Hospital (HEAR) 155.3550 N/A EMS 155.3850 N/A EMS 155.4000 N/A EMS 163.2500 N/A EMS (paging)
UHF Frequencies
The UHF "Med" channels (some regions use different names, such as "Mednet") are used by Emergency Medical Technicians to communicate with the hospital. Information transmitted may be as little as the patient's age, sex, and general condition or as extensive as a full diagnostic workup.
In some areas, Paramedics are only able to give certain treatments under authority of an MD or specially-trained RN. This type of traffic is on the decline as well as Paramedics are given more independent treatment authority.
Analog transmission of electrocardiograms was quite common in the early days of modern EMS, but these modulated 1000 Hz tones are heard less and less as more and more EMS medical traffic is handled via cell phone.
The UHF frequencies are assigned in pairs. In semi-duplex mode the higher frequency of the pair is usually used by the mobile while the lower frequency is used by the base (usually a hospital). Some EMS systems have the system configured for full-duplex where both parties can transmit and recieve at the same time.
Med 1 - 463.0000 - 468.0000 Med 2 - 463.0250 - 468.0250 Med 3 - 463.0500 - 468.0500 Med 4 - 463.0750 - 468.0750 Med 5 - 463.1000 - 468.1000 Med 6 - 463.1250 - 468.1250 Med 7 - 463.1500 - 468.1500 Med 8 - 463.1750 - 468.1750 Med 9 - 462.9500 - 467.9500 Med 10 - 462.9750 - 467.9750
Early on, there were four other frequencies, another 5 MHz below Meds 2, 4, 6, and 8 (458.02500, 458.0750, 458.1250, 458.1750). These were used by Paramedics to relay medical and telemetry traffic from the patient's location to the ambulance or rescue vehicle and then again to the hospital or other medical control. Like the Med channels themselves, they are now all in the public safety frequency pool.