"-=jd=-" wrote in message
3...
Dateline "rec.radio.shortwave", Thu, 02 Oct 2003 05:17:17 GMT: As it
appeared in message-ID#
,
"Frank Dresser" appears to have written
the following...


"pete" wrote in message
news:01c38899$27465380$4c1588cf@verrando...
Are you saying broadband access and HF radiation must necessarily go
together? If so, why?

As a commodity, the HF spectrum can be more greatly exploited for
profit
as

a means of delivering data bandwidth than as a means of mass
communication or 2-way comms.

MW/HF isn't much bandwidth. 30 MHz tops. As a comparison, the FM
spectrum alone is 2/3 of that . Or 5 TV channels. There's nothing
favoring broadband data transmissions on such low frequencies.
Efficent antennas are very large. Directional antennas aimed at one
point source are almost impossible. There's alot of interference
from natural sources such as thunderstorms. Radiated interference can
come from halfway across the state, or half way across the world.
VHF/UHF beats MW/HF for broadband communications on all counts.


I hadn't considered antenna form-factor as I was under the impression
that the device's power cord was the antenna (so to speak) as soon as it
was plugged into the wall outlet.



BPL would be over the powerlines and any radaition would be incidental. I
got the impression the poster was thinking of directly using the entire HF
spectrum for broadband access rather than for broadcasting and ham radio.



In any event, it would seem that current fashionable/stylish appearance
designs dictate that "Smaller is Cooler". If BPL involves a gigantic set
of rabbit-ears, I'm thinking folks will turn their nose up at it...

-=jd=-
--
My Current Disposable Email:

(Remove YOUR HAT to reply directly)

If BPL didn't radiate into the radio spectrum, radio hobbyists wouldn't be
bothered. Replacing MW/HF radio's space in the spectrum with broadband has
lots of problems.

Frank Dresser