On Fri, 14 Jul 2006 14:54:56 -0700, "RST Engineering"
wrote:


Consider the most probable cause. An FM receiver at 104.1 has a local
oscillator at 114.8 MHz to produce an IF of 10.7 MHz. Not only will that
beat with 104.1 on the low side of the LO, it will beat with 125.5 on the
high side. Most FM receivers have at least a +/- 50 kHz. wide IF strip to
allow the stereo subcarrier at 38 kHz. to come through, so 125.45, 125.5,
and 125.55 will come through as well.

The OP is in California bay area. Oakland Center in that area is
125.45. Southwest Airline flies to SJC, so it all makes sense...
Case solved.

-Nathan