[Elecraft] Question from a newbie

[Bob Zinn]

I wonder if those that see no results from the KNB2 have forgotten to 
remove a jumper or something?

I could not operate without the KNB2.

I have line noise that runs 20 dB over s9 at my location on 80 meters 
(almost as bad on 60, 40, 30, and 20) without the KNB2. Operations of 
any kind would be impractical.

My Drake 2b receiver can only pick up the strongest stations.

Message: 7
Date: Sun, 11 Mar 2007 06:42:55 -0700 (PDT)
From: "Fred (FL)" <ncsailors at yahoo.com>
Subject: RE: [Elecraft] Question from a newbie
To: elecraft at mailman.qth.net
Message-ID: <556207.91092.qm at web90502.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

I built my K2 #54xx in May 06.  Built the KNB2 Noise
Blanker.  Then found it never really seemed to work on
any noise!  One day, 4 cement trucks & 2 large
pickups sat like 30 feet from my shack - all running,
all working.  The KNB2 did nothing to remove any of
that man-made noise.  Also it doesn't work on any band
noise - that I ever found. I even got a 2nd KNB2, from
Elecraft - and it didn't work either?

The K2 itself - after build - operated true to
all specs, calibrations, & alignments beautifully.

I've since felt, the KNB2 is a design job left to be
re-done, by some Elecraft designer, when they get
around to it.  The IC-7000's Noise Reduction and
Noise Blanker circuitry - amazingly almost always
reduces most band noises, real or imaginary,
dramatically.  Maybe in the K3?

Fred N3CSY



-- 
-bz-
pardon my infinite ignorance. The set-of-things-I-do-not-know is infinite.

73 de N5BZ  K2/100 # 5884