With all the equalization options on today's modern equipment, it would
appear that you could make the panadapter look pretty much any way you want
it to. That being the case,
what would you like it to look like if your objective is to "punch through
the dx pile ups"? What would you like it to look like if your objective is
for your rag chew buddies on 160 to tell you you have great sounding
audio? And finally what do you want it to look like so you sound just like
"you". I've spent hours, never knowing what I was doing, just listening to
myself trying to achieve one or all three of these objectives.
Willing to listen to all suggestions, Merv, W2OE
On Fri, May 20, 2022 at 10:35 PM Edward Mccann wrote:
> Equally revealing is the audio gram of the average over 70 American male’s
> high frequency response. I’d show you mine but it’s so bad it’s classified.
> Typically falls off dramatically in the high end over time. Mine looks like
> Niagara Falls.
>
> Glad to have some way to electronically compensate for those years in the
> engine room and winds of the South China Sea whistling through ears on the
> bridge wing.
>
> Ed McCann
> AG6CX
>
> Sent from my iPhone
>
> On May 20, 2022, at 6:31 PM, Joe Subich, W4TV wrote:
>
>
> On 2022-05-20 8:36 PM, jerry wrote:
> > I remember reading a magazine article many years ago...
>
> QST, Dec 1977, Nov and Dec 1978 also the ARRL Handbook, 57th
> Edition (1980).
>
> > They showed a hole of frequencies in the normal human voice audio
> spectrum where there is not much energy. It was proposed to create
> > a new modulation where the higher frequencies would be shifted down
> > into the hole - thus letting the SSB signal take up less spectrum -
> > and then shifting those audio frequencies back up at the receive
> > end.
>
> I think it was called NBVM (narrow band voice modulation). Used
> a hard lowpass filter around 600 Hz to preserve the low audio,
> a bandpass filter to "select" 1500-2500 Hz, a balanced modullator
> with a 3100 Hz "carrier" and pandpass filter to select the lower
> sideband. This resulted in the 1500 - 2500 Hz audio being inverted
> into 600 Hz - 1600 Hz and the total transmitted voice bandwith of
> just 1400 Hz (200-1600 Hz).
>
>
> 73,
>
> ... Joe, W4TV
>
>
> On 2022-05-20 8:36 PM, jerry wrote:
> > I remember reading a magazine article many years ago... They showed a
> hole of frequencies in the normal human voice audio
> > spectrum where there is not much energy. It was proposed to create a
> new modulation where the higher frequencies would be
> > shifted down into the hole - thus letting the SSB signal take up less
> spectrum - and then shifting those audio frequencies
> > back up at the receive end.
> > Thinking about it...that's the sort of thing I would have expected to
> read in Ham Radio magazine. I miss it.
> > - Jerry KF6VB
> > On 2022-05-20 17:10, Walter Underwood wrote:
> >> About seven years ago, there was an extended discussion on this list
> >> about equalization settings for transmit. I collected all the settings
> >> people used and posted about the majority contour.
> >>
> >>
> https://observer.wunderwood.org/2015/09/09/transmit-audio-and-compression-with-the-elecraft-kx3/
> >>
> >> wunder
> >> K6WRU
> >> Walter Underwood
> >> CM87wj
> >> http://observer.wunderwood.org/ (my blog)
> >>
> >>> On May 20, 2022, at 6:07 PM, Bob McGraw wrote:
> >>>
> >>> Oh yes it is there on many SSB signals where the OP is a male. That is
> where most of the fundamental male voice energy occurs. Those signals which
> look uniform across the SSB TX bandpass do sound good.
> >>>
> >>> I attribute this to the fact most hams will "boost this and boost
> that" and never give thoughts to attenuating. In fact the characteristics
> of the EQ in the boost mode are noticeable different than the attenuate
> mode. Yes, one can hear the difference.
> >>>
> >>> In my world of pro audio, it is a practice to attenuate first and then
> boost if absolutely necessary. Hams just can't get over the fact they
> must always have more...boost boost boost.
> >>>
> >>> So if ones signal is muddy or bassy, what's to do? Attenuate the low
> end first, and rarely if ever, boost the high end. Of course boosting the
> high end will make it brighter, but not attenuating the low end will
> consume lots of unnecessary transmitter power not being used for effective
> communications. 50Hz - 16dB, 100Hz -16dB, 200Hz - 16dB, 400Hz - 9dB, 800Hz
> - 0dB, 1.6kHz - 0dB, 2.4kHz +0dB, 2.4kHz +3dB, 3.2kHz + 6 dB.
> >>>
> >>> Works for me.
> >>>
> >>> 73
> >>>
> >>> Bob, K4TAX
> >>>
> >>> On 5/20/2022 4:30 PM, elecraft-requ...@mailman.qth.net wrote:
> Message: 8
> Date: Thu, 19 May 2022 02:14:10 + (UTC)
> From: Al Lorona
> To: Elecraft Reflector
> Subject: [Elecraft] [OT] The dreaded 400 Hz hump
> Message-ID:<1840135010.161126.1652926450...@mail.yahoo.com>
> Content-Type: text/plain; charset=UTF-8
>
> Have
