[Elecraft] K2 - 40m Distortion Zones FIXED!!

[Sean Baxter]

Thanks to all.  WAOF was fixed by adding the 10pf cap across U4 pins 1 & 2.
Sean - K3XT
#2311


----- Original Message -----
From: "Joe Malloy" <jmalloy@hamilton.edu>
To: "Sean Baxter" <sbaxter@gte.net>; <elecraft@mailman.qth.net>
Sent: Friday, February 01, 2002 8:17 PM
Subject: RE: [Elecraft] K2 - 40m Distortion Zones


> Sure thing, you've got WAOF syndrome -- "weird at one frequency" is a well
> known and documented problem (of minor proportions!).  Go here
>
> http://www.elecraft.com/Apps/Alert11_WAOF.html
>
> and find out how to cure it and what causes it.  By the way, though I
> followed the instructions there, it didn't clear up my WAOF problem, but,
> hey, everything else works, so I'm not complaining!
>
> 73,
>
> Joe, W2RBA
>
> > -----Original Message-----
> >
> > In the testing phase of my K2 I noticed something strange happening on
40
> > meters. With the SSB and CW modes (all filter options) I hear
> > (all received
> > signals) and will transmit on the following frequencies (SSB & CW) what
> > sounds like 60 cycle modulated hum (very loud). On USB the frequency
range
> > is 7180 thru 7184, in LSB the frequency range is 7182 thru 7187.
> > Except for
> > the SSB module no other options are installed.  This happens with both
an
> > outside antenna and a dummy load.  When I tune outside these frequency
> > ranges all works well.
> >
> > Any ideas?
> > Thanks,
> > Sean - K3XT
> > #2311
> >
>