"Brian Whatcott" wrote:
...
Into 50 ohms, that would amount to v^2/50 = 0.004
v^2 = 0.2 v^2 so V = 0.4 volts very roughly....


Maybe you didn't intend excess details here, but this .4V calc is not
the whole story if the receiver is not tuned for a band which includes
the offending freq. Even 107.9 FM bleeding over into 108.0 on a VOR
receiver will be some decibels down -- the VHF rcvr presumably feeding
the antenna input into at least one passive, tuned circuit before
meeting up with a semiconductor. And you'll have some loss in the
antenna itself at the extreme ends. So maybe .2V tops at 107.9? And
107.9 FM will be way, way down in a comm rcvr's front end, the type of
rcvr is at issue here.

Fred F.