[Elecraft] TX Equalizer Profiles

[Bob McGraw]

I've used both with my K3S.  I didn't care for the sound of either one 
for SSB.  For AM, the 781 was better.   The mike technique, i.e. mike to 
mouth distance, is critical as proximity effects are very pronounced.  
Likewise the mike on axis position is critical.   Variations in these 
two parameters will greatly change the transmitted sound.    The 
transmit bandwidth has TX ESSB set to OFF.

The profile I used for both mikes:

50 Hz   -16

100 Hz  -16

200 Hz  -16

400 Hz  -12

800 Hz  0

1.6 kHz   0

2.4 kHz  +3

3.2 kHz  +6

The bottom line, I sold both mikes in favor of a different microphone, 
which I much prefer, being a Shure SM-58.  My evaluation is based solely 
on using a remote SDR, recording my test transmission, and then 
listening back to my recording.  I make adjustments from that 
evaluation.  I always get complements on my "great sounding audio".  
I'll stand by that any day.   And I don't have the pipes of Don Pardo 
(SNL), Richard (Dick) Dudley (Voice of NBC) , or Jack Parnell.

73

Bob, K4TAX



On 12/1/2025 11:00 AM, elecraft-request at mailman.qth.net wrote:
> Message: 1
> Date: Sun, 30 Nov 2025 10:43:25 -0700
> From: Tom Coletti<tcoletti at me.com>
> To:elecraft at mailman.qth.net
> Subject: [Elecraft] TX Equalizer Profiles
> Message-ID:<BF542643-5909-4785-91B5-85B810889890 at me.com>
> Content-Type: text/plain; charset=utf-8
>
> Anyone have TX profiles for Heil PR40 or 781 mic?s?
>
> Tom C
> NA7AA
-- 
Common sense is a flower that doesn't grow in everyone's garden.