After I wrote my previous message about interference on 7.415, I turned to 5.105
and found some sort of buzzing interference on that frequency as well. At 0200
UTC it was happening every few minutes for a few seconds, and over the course of
an hour it became more frequent and toward 0300 the duration began to increase
as well. Is someone trying to jam them, or is it just coincidence that there's
some type of signal on both frequencies? The signal on 7.415 is very
high-pitched and sounds like it could be some sort of data signal. The signal
on 5.105 just sounds like noise, unless it's some sort of broadband radar.