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

Sun Mar 26 14:18:07 EDT 2017

Of course going from 5 watts to 25 watts is a 7db increase, which is over 1
S unit. I do think, though, that the 3db gain from 100 watts to 200 watts
did help, especially under margin conditions.
Unfortunately I don't have a scope to adjust the audio and ALC. I am
currently using a Yaesu FT100D which uses a different microphone that the
FT857, and the mic for the FT100 doesn't have the 2 position switch on it.
73 John AF5CC
On Sun, Mar 26, 2017 at 11:19 AM, Dr. Gerald N. Johnson <geraldj at netins.net>
wrote:
>>> -------- Original Message --------
> Subject: Re: [Yaesu] Level of radio and SSB performance
> Date: 2017年3月26日 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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