OT: best source of latest propagation news?

[Greg - AB7R]

Thanks for checking that Don.  I'm not in front of my radio so could not verify what bands were actually
used now.  I wasn't aware of that change and will update the FAQ this evening.

BTW...you already can adjust the TX EQ setting during transmit.

-------------------------
73,
Greg - AB7R
Whidbey Island WA
NA-065
K3#0009

On Fri Feb  1  6:12 , "Don Nesbitt"  sent:

>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: [hidden email]
>[[hidden email]','','','')">[hidden email]] On Behalf Of Paul
Christensen

>Sent: Friday, February 01, 2008 8:58 AM
>To: [hidden email]
>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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[P.B. Christensen]

Earlier today, I wrote:

> ..."I would strongly recommend using slightly different centered bands of 50, 100, 200, 400, 800, 1600, 2400, 3200 Hz..." and....

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

I should correct myself in that the 2400 Hz center is a half-octave between the stated upper and lower value.  The remaining values are full-octave steps.  The half-octave step of 2400 Hz affords some control in a critical listening area.

Some folks have replied privately that what should be a 1600 Hz center on the K3's latest firmware is actually 1200 Hz...perhaps a legacy value left over (either missed or perhaps it was deliberate?) from the prior change.  Whether it's 1200 or 1600 Hz is really immaterial.   The important consideration is that they made the right move with the other frequencies and it appears they have.  Nice work guys!

Paul, W9AC (K3 on order)
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