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Let Your Ears Have Wings
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Part 2. V.H.F.IU.H.F. Guide To Air Traffic Frequencies
Last issue, we rounded off the information with the official frequency spectrum list, which shows VHF (very high frequency) as 30 Mhz to 300 Mhz, and UHF as 300 Mhz to 3 Ghz.
In aviation practice however, VHF extends only to 200 Mhz, and UHF military frequencies begin there and continue to 400 Mhz. In the March 1982 articles, no military UHF frequency information was provided, due to general unavailability of MILITARY 13AND receiving equipment. But now the situation has changed, with readily available scanning monitors such as the JIL SX-200 and UHF(military band) converters to fit, covering225 Mhz to380 Mhz. It’s made the inclusion of the RAAF UHF frequencies a must.
Most VHF civil frequencies at major airports are simultaneously broadcast on UHF military frequencies. In order to save space, and fit in more frequencies for you to use operationally, we will only briefly look at understanding VHF and UHF signal propagation, and the workings of ATC and FIS units.
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