Multiple radio sets Mobile radio

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a mobile radio in ambulance has 2 sets of controls: 1 in patient area , near driver.


us ambulances have radios dual controls , dual microphones allowing radio used patient care area in rear or vehicle s cab.


data radio

both tow cars , ambulances may have additional radio transmits , receives support mobile data terminal. data terminal radio allows data communications take place on separate radio. in same way facsimile machine has separate phone line, means data , voice communication can take place simultaneously on separate radio. federal express (fedex) radio systems used single radio data , voice. radio had request-to-speak button which, when acknowledged, allowed voice communication dispatch center.


each radio works on single band of frequencies. if tow car company had frequency on same band auto club, single radio scanning might employed both systems. since mobile radio typically works on single frequency band, multiple radios may required in cases communications take place on systems on more 1 frequency band.








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