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...HF AM) frequency use with the FAA, the sole agency responsible for the use of aviation frequencies. ...ill be one of the standard VHF Command assignments (C1 through C6) and one of the standard UHF assignments (L1 through L7). Any UHF frequency listed on

...itory than ground level sites. This is why the dispatcher can receive most of the mobile traffic, while the scanner listener cannot. ...or 72 MHz frequencies and the dispatcher's console is controlled by a type of computer that chooses the best signal to send to the dispatcher if more tha