[Elecraft] K3 birdies - question?
Ron D'Eau Claire
ron at cobi.biz
Wed Mar 4 11:01:44 EST 2009
I've had the cables all over the place. There seems to be only one cable
whose placement has a significant effect on birdies. That's the long
(10"/25cm)cable running from J84 at the bottom of the Auxiliary KSYN3 board
to J85 on the KRX3 RF module. It should be dressed as shown in Figure 47 in
the KRX3 manual. In some cases it helps to keep it away from the tiny
toriods on the mixer board as well. Either run it across above the mixer
board as shown or work it down under the mixer board so it loops up between
the mixer board and the front panel shield to J85 on the KRX3 RF module.
Ron AC7AC
-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ian White GM3SEK
Sent: Wednesday, March 04, 2009 12:11 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 birdies - question?
James Sarte wrote:
>
>
>At first I thought I did not have any noticeable birdies, but now it
>seems that I have developed a few. It's probably from moving cables
>and such around inside the rig.
>
>
We could really use a detailed set of photos of cables behind the synth
board(s), showing the complete step-by-step buildup of a good layout -
and also examples showing what *not* to do.
--
73 from Ian GM3SEK
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