RadioBanter - View Single Post - We Need a BANDWIDTH-BASED Frequency Plan - NOT Mode-Based.

February 4th 04, 10:54 AM

In article ,
(Brian Kelly) writes:

It's been something like twelve years since the first of the piles of
nocodes hit the bands 30Mhz. Mayber it's happened and I missed it but
I have yet to see or hear of a single example of a nocode
experimenting with a new wide mode. For that matter none of the Extra
"wideband digigeeks"who have bleated the same refrain have done
anything but talk either.

Some have amassed almost 80 countries on old-fashioned SSB, though. But that
was when we had some sunspots.

Worn out transparent old smokescreen, all of it.

As is this "bandwidtj based frequency plan" thing. Note that it would
essentially
knock AM and NFM off much of amateur HF. Note also that besides drastically
widening the 'phone subbands, it cuts down the incentive to get an Extra.

Most of all, note the unsubstantiated statements like 'by 2010, 30% will be
Novice operators' and '80% of hams on HF radiate a medium bandwidth signal' and
such. Where do these numbers come from? No response.

One type of amateur HF wideband "experimentation" I know of is some folks
fooling around with "enhanced SSB", which is plain old SSB with the frequency
range widenend to up to 9 kHz. Some call it "single wideband". There's also
some digital voice experimentation going on, but the added complexity doesn't
seem to give addded results. Yet.

And to answer your question: Yes, you can put a voice signal (digitized)
through a 500 Hz pass band. You just need a modulation scheme meant for that
application, and the tradeoff will come in the form of needing a really good
S/N and/or more than real-time to send the message.

73 de Jim, N2EY