[Elecraft] Re: Strange KNB2 Behavior

[Mike Harris]

G'day,

Finally got around to incorporating these mods to K2 #1400.  Didn't have a
.0027uF for C12 but added another 0.001uF across C12 on the underside of
the board.

Result, the DSP NR function no longer switches on when toggling the NB
threshold.

Are there any more useful "consistency" issues I wonder.

Regards,

Mike VP8NO
#1400

----- Original Message ----- 
From: "Lyle Johnson" <wa7gxd@fidalgo.net>
To: "elecraft" <elecraft@mailman.qth.net>
Sent: Friday, January 30, 2004 9:28 PM
Subject: RE: [Elecraft] Re: Strange KNB2 Behavior


| > Lyle, is there a fix for this??
|
| If your K2 is not a Rev B unit, then the answer is yes.  No one has
reported
| to me that they have experienced this AND that they are running a Rev B
| unit.
|
| Control board:
|
| R6: change to 100 ohms.  This is the most important change with respect
to
| this problem.  Original value of 470 ohms is too high.
|
| C12: change to .0027uF (272).  This is for Rev B consistency.
|
| RF board:
|
| R64: change to 100 ohms.  This is for Rev B consistency.
||