Stan Gosnell wrote:
Very possibly. Harmonics can do as much damage as the fundamental
frequency.

Harmonics, from FM broadcast radio? The FM broadcast band is 88-108MHz.
The second harmonic of the lowest of those frequencies is 176MHz (the
highest second harmonic is 216MHz), well above 150 MHz. The third
harmonic is higher, the fourth higher yet, etc. At 108MHz, the most
likely sources of interference from FM broadcast radio are spurious
signals (lousy filtering at the transmitter), or front-end overload
(very strong signals overloading the ability of the receiver to reject
nearby frequencies). I'd be inclined to think the latter, given the
transmission purity standards.

--Dave

--
Dave Buckles

http://www.flight-instruction.com