great article on AGC by Fred Cady

[IK4EWX]

Fred, I have seen your great article on AGC version 4.51 on your web page.I hadnt seen it before, my mistake.Now I have understood better how it work, THR and SLP, on K3/K3S.But, sorry, I repeat the question: what is/are the setting/settings that you prefer?For CW dx-ing and CW ragchewing, expecially.Thanks Ian IK4EWX
PS: I will wait your new book on K3S - KPAD programming macros, anxiously :)
.
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[Don Wilhelm]

Ian,

You might also want to look at the information on my website
www.w3fpr.com - Article on "Noisy K3" for more information about how to
adjust your AGC parameters for your particular tastes and band conditions.

73,
Don W3FPR

On 11/14/2016 5:19 PM, [hidden email] wrote:
> Fred, I have seen your great article on AGC version 4.51 on your web page.I hadnt seen it before, my mistake.Now I have understood better how it work, THR and SLP, on K3/K3S.But, sorry, I repeat the question: what is/are the setting/settings that you prefer?For CW dx-ing and CW ragchewing, expecially.Thanks Ian IK4EWX
>
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[Cady, Fred-2]

Hi Ian,

Most of my operating has been contesting and dealing with pileups.  I want to have the most discrimination or differences between different strength signals in the pile up.  And it would also like the radio to be as linear as possible.  So I would normally use a high threshold and SLP=0 (oddly, that is the steepest slope) so that loud signals sound loud and weak signals weak.  On the other hand, for rag chewing in a you might want all signals to sound pretty much alike.  Then choosing a low thr and slope=15 will flatten out the signals.


Don has some great ideas on setting AGC in his article, especially regarding noise.  It is easy to hear (and see) if  you have the THR set too low and noise is activating the AGC.  Tune to a noisy band and then start cranking THR down.  When you get too low you can easily hear the noise level decrease.  If you set up the dBV measurement you can actually measure the reduction in audio level.


73,

Fred KE7X

________________________________
From: Elecraft <[hidden email]> on behalf of Don Wilhelm <[hidden email]>
Sent: Monday, November 14, 2016 4:16 PM
To: [hidden email]; [hidden email]
Subject: Re: [Elecraft] great article on AGC by Fred Cady

Ian,

You might also want to look at the information on my website
www.w3fpr.com<http://www.w3fpr.com> - Article on "Noisy K3" for more information about how to
adjust your AGC parameters for your particular tastes and band conditions.

73,
Don W3FPR

On 11/14/2016 5:19 PM, [hidden email] wrote:
> Fred, I have seen your great article on AGC version 4.51 on your web page.I hadnt seen it before, my mistake.Now I have understood better how it work, THR and SLP, on K3/K3S.But, sorry, I repeat the question: what is/are the setting/settings that you prefer?For CW dx-ing and CW ragchewing, expecially.Thanks Ian IK4EWX
>
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[Elecraft mailing list]

Ian,
At P49Y, I also like to use SLP=0 for pileups, because then one can "ride"
the RF Gain control to try to differentiate signals within a pileup. On the
other hand, for casual operation, it is easier on your ears to use higher
values of SLP in order to make the volume of signals more constant.  This
also works better in a contest for the second radio if it is used for S&P on
another band.
73, andy ae6y p49y

-----Original Message-----
From: Cady, Fred
Sent: Wednesday, November 16, 2016 3:19 PM
To: [hidden email] ; [hidden email]
Subject: Re: [Elecraft] great article on AGC by Fred Cady


Hi Ian,

Most of my operating has been contesting and dealing with pileups.  I want
to have the most discrimination or differences between different strength
signals in the pile up.  And it would also like the radio to be as linear as
possible.  So I would normally use a high threshold and SLP=0 (oddly, that
is the steepest slope) so that loud signals sound loud and weak signals
weak.  On the other hand, for rag chewing in a you might want all signals to
sound pretty much alike.  Then choosing a low thr and slope=15 will flatten
out the signals.


Don has some great ideas on setting AGC in his article, especially regarding
noise.  It is easy to hear (and see) if  you have the THR set too low and
noise is activating the AGC.  Tune to a noisy band and then start cranking
THR down.  When you get too low you can easily hear the noise level
decrease.  If you set up the dBV measurement you can actually measure the
reduction in audio level.


73,

Fred KE7X

________________________________
From: Elecraft <[hidden email]> on behalf of Don Wilhelm
<[hidden email]>
Sent: Monday, November 14, 2016 4:16 PM
To: [hidden email]; [hidden email]
Subject: Re: [Elecraft] great article on AGC by Fred Cady

Ian,

You might also want to look at the information on my website
www.w3fpr.com<http://www.w3fpr.com> - Article on "Noisy K3" for more
information about how to
adjust your AGC parameters for your particular tastes and band conditions.

73,
Don W3FPR

On 11/14/2016 5:19 PM, [hidden email] wrote:
> Fred, I have seen your great article on AGC version 4.51 on your web
> page.I hadnt seen it before, my mistake.Now I have understood better how
> it work, THR and SLP, on K3/K3S.But, sorry, I repeat the question: what
> is/are the setting/settings that you prefer?For CW dx-ing and CW
> ragchewing, expecially.Thanks Ian IK4EWX
>
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