I am wondering if local interference that has just started is from
broadband.

The last time I started having new interference like this all up and down
the bands, it came from a component stereo system and tv, so I have
everything on a switch so I can turn all that off. I even turned off my
answering machine-cordless phone. It creates an intermittent whining or
howling noise that almost sounds like cw.

My antenna system in dorectional. When I use the pair of short vertical
wires, the noise is lessened; using the horizontal pairs, it is really loud.
The interference seems to begin around 13 Mhz and continues in various
places on the bands through 15 Mhz. At higher frequencies, it seems to
disappear. I have similar problems with the electrical meters which
interferes on 4.0 through 4.8 or so.

Is it possible to have that much interference from wireless computer systems
or powerline networked PC's.

Concerned in Issaquah, Wa.

BTW lots of "risers" this morning.