[Amps] Audio BW -- Please just let us operate!!

[Joe Isabella]

I decided to break this out separately because I've heard this same story over and over and over
again.  Anyone running some extended low-end content is "wide".  I already stated this before, but
"bassiness" does not = wide bandwidth.  If any of you don't understand that the higher frequencies
(in a properly adjusted transmitter) are the only way that a signal is "wideband", and that highly
compressed, overdriven audio (often heard during contest periods or DX-peditions) can be twice as
wide a 6k SSB signal, then I suggest you go back and study radio theory.  Don't make comments
without ID'ing, or make gross noises during my QSO -- I may very well be running 3k audio with
some enhanced low frequency content, not any wider than you.  My EQ settings (which are stored in
memories) and my rig's TX BW setting compliment each other.  I don't try to cram "10lbs. of audio
in a 5lb. radio", as many of you think.  What can be accomplished with a little patience and some
experimentation is truly outstanding audio that's narrower than "overdriven contest audio", even
if you only run 3kHz.  I typically run a little more than that (about 3.2), and I will continue to
do so (try and measure it over the air -- I think you'll find it difficult).  I have spent less on
my audio gear (about $400) than many of you spent on a couple mics.  I can mimic Heil's HC-4,
HC-5, or Goldline with a flick of an EQ setting, and still ends up sounding much better due to the
external adjustable compression, downward expander, and customized EQ'ing.

Oh and BTW, I haven't even TOUCHED my rig as far as modifications.  The audio isn't going directly
to a "balanced modulator", it enters the rig and follows the same path it would if I just plugged
a mic into it (straight into the audio CODEC, via a couple audio pre-amps).  So don't give me that
garbage about "hacked rigs" or "ripped out filters".  That's another myth.

I'm on vacation in the Keys -- just got here today.  Sorry to stir the pot like this, but I just
can't stand to see inaccurate information and obviously emotional opinions without substantiation
go unanswered.  You got spectral plots (from a *REAL* spectrum analyzer, not these garbage
"bandscopes"), show me -- if not, you're trying to push up a rope.  You won't hear from me for a
few days.  Have a great weekend!!  Now, where's my beer...

Buenos Nachos!!  :-)
Joe,
N3JI



		
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