[Elecraft] K3 TX EQ

[Don Nesbitt]

Hello Paul - the TX EQ steps on my K3 are 50 100 200 400 800 1200 2400 and
3200.  I've not looked at the FAQ Page but perhaps that was an early version
and has since been changed and the FAQ ought to be changed to reflect
current status.  '73 es gud dxing -- Don N4HH K3 #83

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Paul Christensen
Sent: Friday, February 01, 2008 8:58 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 TX EQ

Wyane & Eric:

I noted the following from the Elecraft K3 FAQ page concerning the K3's TX 
EQ settings:

> "The bands are centered at 200, 400, 600, 800, 1200, 1600, 2400, and 3200 
> Hz. We can easily change these if something else turns out to make sense. 
> Also note that TX EQ will be adjustable while in TX mode..."

As long as you're open to suggestion, I would strongly recommend using 
slightly different centered bands of 50, 100, 200, 400, 800, 1600, 2400, 
3200 Hz   The lower limit of 200 Hz will not allow the user to optimize low 
frequency voice tailoring and adequate notching of the 150-200 Hz spectrum 
without sacrificing low-end content.  As SSB transmit B/W narrows, 
articulation is significantly improved by narrow subtraction of the 150-200 
Hz spectrum while maintaining adequate amplitude of approximately 80-100 Hz 
(assuming the K3 will pass this degree of low-end spectrum owing to the 
carrier set point placement through the crystal and DSP filters).  The user 
could then accomplish this effect by adjusting the 100Hz and 200 Hz 
settings.

Also note that unlike the current K3 band centers, when beginning with 50 
Hz, each successive band increases in exactly one-octave increments.  Thanks

for your consideration!

Paul, W9AC (K3 on order)

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