[Yaesu] Fwd: Re: Level of radio and SSB performance

[Dr. Gerald N. Johnson]

-------- Original Message --------
Subject: 	Re: [Yaesu] Level of radio and SSB performance
Date: 	Sun, 26 Mar 2017 14:04:44 +0000 (UTC)
From: 	Morris Wideman <wa4mit at yahoo.com>
Reply-To: 	Morris Wideman <wa4mit at yahoo.com>
To: 	geraldj at netins.net <geraldj at netins.net>



Hi John
In my estimation the power made a bigger difference than you might
think. I work a lot of JT65 and have noticed that only a few watts can
make a
big difference in making a contact and not being heard and I am not
talking about doubling the power I mean like 5 watts or less say going
from 20 to 25 watts. So doubling the power could make a huge difference
at the other end. Just my opinion.
73 Morris wa4mit


On Saturday, March 25, 2017 9:52 PM, Dr. Gerald N. Johnson
<geraldj at netins.net> wrote:


You get some RF envelope control with a fast ALC holding back the peaks
without causing the splatter of clipping without post clipping filtering.

I'd look at the RF envelope with a scope and see which rigs you have on
hand produce a greater averaage power while keeping the peak power to
the peak power rating of the output stages.

One of the variables on the 857D standard microphone is there is a
switch on the back to change the LF rolloff frequency by changing the
value of a coupling capacitor. And the DSP in the 857D allows for
adjusting the transmit audio response to emphasize certain frequencies
if they get more punch from your voice.

73, Jerry, K0CQ

On 3/25/2017 9:11 PM, John Geiger wrote:
  > Last year I was able to use a Yaesu FT1000D for a couple of months,
and was
  > surprised at how much better it seemed to be doing on SSB contacts
compared
  > to my normal rigs. Yes, it does 200 watts which is a 3DB gain, which
  > sometimes can make a huge difference, but I was also thinking that maybe
  > the SSB transmit audio was more "powerful".
  >
  > Now over the past decade or so my rigs have pretty much been either
an Icom
  > 706 series, a Yaesu FT857 or FT100D, or a Yaesu FT450. Most of these are
  > mobile rigs and use AF speech processing, when RF speech processing is
  > better.
  >
  > Anyways, might I get better SSB performance by going to a traditional
base
  > rig? Do these mobile type radios tend to have whimpier or less 
dominating
  > audio? Would a FT990 or FT1000MP series radio probably have punchier
audio?
  >
  > BTW, what are some of the current and recent Yaesus that use RF speech
  > processing?
  >
  > 73 John AF5CC
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