[Elecraft] K3 Synthesizer Stiffener Plate Mod

[Guy Olinger K2AV]

Wayne acknowledges the improvement in shielding, and all new synth
boards go out with the stiffener.

AND if you had your TX synth go down and had the KRX3, I think most
people would but the other in it's place, reinstating the problems if
you did not modify both. Modifying only one is a dead-end tactic and
booby-trapping a new owner if you ever sell it.

73, Guy.

On Tue, Sep 7, 2010 at 11:11 AM,  <elecraft at g4fre.com> wrote:
> There must be some point, as putting it on the sub vco is still mentioned in
> multiple places on the elecraft web site...
>
> from http://www.elecraft.com/order_form_parts.htm#K3 Parts:-
>
> "K3STFNR  K3 Synthesizer Stiffener Plate Kit   Included on all new K3s
> (***one ea. per synthesizer board***)"
>
> and
>
> http://www.elecraft.com/manual/ELECRAFT%20KSYN3%20Stiffener%20Mod%20Rev%20D.
> pdf
>
> "If your K3 is equipped with the KRX3 subreceiver it will have two KSYN3
> synthesizers. Both boards should bemodified if the user chooses to make this
> modification".
>
> As you say you only transmit on the "main VCO"  so putting the shield on the
> main vco would deal with speaker rumble issue so putting it on the subvco
> maybe to improve shielding?
>
> Dave
>
> ww2r
>
>
> Message: 36
> Date: Mon, 06 Sep 2010 19:31:52 -0700
> From: Vic K2VCO <vic at rakefet.com>
> Subject: Re: [Elecraft] K3 Synthesizer Stiffener Plate Mod
> To: elecraft at mailman.qth.net
> Message-ID: <4C85A418.1050607 at rakefet.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 9/6/2010 4:45 PM, ke7vwi at aol.com wrote:
>
> There is no point to installing it on the synthesizer that's used for the
> subreceiver.
> This synth is never used for transmitting. The purpose of the plate is to
> keep
> vibrations
> from the internal speaker from causing a change in tx frequency.
>
> It is known that sometimes changing the routing of the cables that go to the
> synths will
> affect the strength of birdies, so that may be why you noticed an
> improvement!
> --
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
>
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