Gee, Len, BPL isn't supposed to be radio at all. Fill us in on the
various intended BPL wireless propagation media. Those power lines
are intended to be antennas?

Maybe BPL is the answer to hams who can't put up HF
antennas? :-) CQ BPL CQ BPL CQ BPL...


I wonder why they have to have wireless routers and receivers (what
frequency do they operate at?...)

Around 2.4GHz or elsewhere in the microwave band.

Seems like if it is HF already, we
shouldn't have to use them. I can see a little HF receiver hooked to my
computer, and make a little antenna from what would ordinarily go into
my Ethernet port. That should work, shouldn't it?