ILS 108 RNAV
The localiser, and the localiser only, operates in the band 108-112 MHz. If you tune your car radio, you will usually find it goes up to 107.9 MHz. This frequency proximity can lead to interference. The glideslope is UHFUHF —Ultra High Frequency and not affected. FMFM —Frequency Modulated filters can be fitted to aircraft to alleviate this problem.
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What, if any, are the effects of broadcast stations operating just below 108MHz on the performance of the ILSILS —Instrument Landing System?