Thread: FM Immunity
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Old December 3rd 08, 06:07 PM posted to rec.aviation.piloting
RST Engineering
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Default FM Immunity

Hey Gerry ...

Isn't 108.1 a protected ILS test frequency like 108.0 for VOR test?

Although I agree; I got my instrument ticket in San Diego and the Genave
A200 was more than willing to provide music on approach into the back course
at Lindberg Field.

Jim



As it turns out, it is needed in the US; but not for the original reason.
Since then our FCC approved HD radio standards that allow significantly
more out-of-band emissions than the old analog signals. Just hope the FAA
hasn't installed an ILS on 108.1 MHz near a 107.9 MHz HD station.

Gerry