Samuel Strongin wrote:
To all I love my K2 it is a great radio,BUT the noise blanker well it
sucks. It works on some noise to some extent that's it. It is the weak
point in the radio,and I live with it. I allways thought Elecraft would
come up with a better design.
It sounds like you may be e
f4yox
- Original Message -
From: "Stan Rife" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, December 26, 2007 7:18 PM
Subject: RE: [Elecraft] KNB2 diagnosis
I'll admit that I am pretty gullible, until I prove otherwise, but
scratching the top of a transistor as a fix???
ble noise
source handy.
Ron AC7AC
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Stan Rife
Sent: Wednesday, December 26, 2007 4:19 PM
To: elecraft@mailman.qth.net
Subject: RE: [Elecraft] KNB2 diagnosis
I'll admit that I am pretty gullibl
Stan,
Scratching Q21 is certainly NOT a *fix* by any means!!! It is a 'GO --
NO-GO' test only.
BUT it is one 'no-tools' method that can effectively produce the noise
that the KNB2 is capable of suppressing. Of course, the preamp must be
on to bring Q21 into the circuit.
73,
Don W3FPR
Stan
Of [EMAIL PROTECTED]
Sent: Monday, December 24, 2007 11:18 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KNB2 diagnosis
Chris,
I installed a KNB2 in my K2 a few months ago. I didn't think it worked until
I tried the scratching of Q21 as recommended.
With the top off and background no
K6DBG wrote
> Some of the time, my pulses just die at the output of R8, which goes to ground
> via L1. I'm not sure exactly what I do differently when the pulse gets past -
> perhaps just how hard I'm tapping?
Sounds strange, if you hear the noises coming through your K2 (with the NB
off), they h
Chris,
I installed a KNB2 in my K2 a few months ago. I didn't think it worked until I
tried the scratching of Q21 as recommended.
With the top off and background noise coming from the speaker, I toggled from
NB1 to NB2 to OFF while I scratched the case of Q21. It worked. I saw a
definite diffe
I've never been convinced that my KNB2 worked as planned. I have the K2 open
today to install the K160RX, and decided to work on the KNB2.
I found the archive messages about "scratching" Q21. I can only get any noise
out of this with the pre-amp on - don't know if that's as expected or not. No
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