[Elecraft] K1 AGC mod

[Don Wilhelm]

Bill,

Decreasing C31 may decrease the attack time, and decreasing C67 will 
reduce the hang time.
If you are having trouble with the initial 'spike', then I would suggest 
reducing C31 first.
You can experiment with the values.

Also take a look at Wayne's comments at 
http://www.qsl.net/ve3mcf/elecraft_reflect/K1_AGC_Notes.txt and be sure 
what you are hearing is not the audio 'thump'.

73,
Don W3FPR

On 2/1/2015 10:37 AM, NZ0T wrote:
> I just built K1 SN 3353 and it's a neat little rig.  I usually wear headphone
> so now that I've experienced the AGC lag I would like to do something about
> it.  I know it's audio derived so it will never sound like a  K2 or K3 but
> if I could reduce the loud spike at the start of a received transmission it
> would help.  From perusing the net it looks to me like the most common mod
> involves replacing C31 on the RF board with a 1uf and C67 on the same board
> with a .22uf.  Is this the best mod or are there others that I should look
> at?
>
>