This past Sunday I came across 856.2875 and 856.8625 on signal stalker at the Philadelphia Int'l Airport. Looked up the frequencies in the FCC database here and came up with this license for American Airlines. WNMO866 (American Airlines Group Inc) FCC Callsign Details
Both frequencies I got were definitely DMR/TRBO. Any idea what this system is for? I know American has a UHF TRBO system at PHL. The license effective date is October 2014 so this 800 system seems fairly new.
Both frequencies I got were definitely DMR/TRBO. Any idea what this system is for? I know American has a UHF TRBO system at PHL. The license effective date is October 2014 so this 800 system seems fairly new.
American Airlines 800 MHZ DMR System at PHL
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