Hi Joe,
I'm a new subscriber to this list, and I suspect the last week's intense
postings on AM/Centurions may not be typical.
No question that ssb is more spectrum-efficient.
I was qrt for about 15 years, been back on hf about 2 - and I would say
outside of contests I have yet to find a "crowded" hf band. What crowds
there are tend to flock around a few key frequencies. 20/40/80(75) are
sparsely populated compared to back in the day. DSB, AM, SSB, whatever, we
need to occupy what we have.
My humble opinion,
73 Randy K9OR
----------------------------------------------------------
Date: Fri, 27 Aug 2004 11:54:17 -0400
From: "Joe Subich, K4IK" <k4ik@subich.com>
Subject: RE: [Amps] Audio BW -- Please just let us operate!!
You're absolutely correct ... Double sideband AM and HiFi SSB
with 4.5 and 6 KHz audio bandwidth are a complete waste of
spectrum and are arguably illegal under rule 97.307(a):
No amateur station transmission shall occupy more
bandwidth than necessary for the information rate
and emission type being transmitted, in accordance
with good amateur practice.
"Communications Quality Audio" has long been defined as
ca. 2.7 - 3 KHz bandwidth ... a definition extending back
into Bell Systems' "toll quality" standards.
Those who use spectrum wasting modulation have no place on
a crowded HF band ...
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