[Elecraft] K3 Synthesizer Stiffener Plate Mod

[Guy Olinger K2AV]

All synth boards are shipping with the stiffener for some time.  To
quickly verify yours, remove the top cover.

See page 6 of http://www.elecraft.com/manual/ELECRAFT%20KSYN3%20Stiffener%20Mod%20Rev%20D.pdf

The stiffener plate is quite obvious in appearance.

Note to Elecraft, the stiffener is STILL not listed on the mods page.
It is only seen in the order page, therefore the serial number onset
of the stiffener in production is not available as it is for other
modifications.

73, Guy.

On Wed, Sep 8, 2010 at 3:40 AM, Edward R. Cole <kl7uw at acsalaska.net> wrote:
> I have not detected birdies in the K3, but have not used it a 28-MHz
> so far.  Until I have a VHF transverter I will not be able to examine
> this very well, but I will be using 28-MHz as an IF for both 144 and 1296 MHz.
>
> But is the stiffener standard on radios after spring-2010?  My K3 is
> #4043.  I can see that additional ground plane surrounding the synth
> may reduce susceptibility to birdies internally generated in the K3.
>
> ------------------------------
>
> Message: 42
> Date: Mon, 6 Sep 2010 21:19:08 -0700
> From: Wayne Burdick <n6kr at elecraft.com>
> Subject: Re: [Elecraft] K3 Synthesizer Stiffener Plate Mod
> To: Guy Olinger K2AV <olinger at bellsouth.net>
> Cc: elecraft at mailman.qth.net
> Message-ID: <DA6322E7-D265-4A4F-B336-1E0D9023C43E at elecraft.com>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> Exactly.
>
> 73
> Wayne
> N6KR
>
>
> On Sep 6, 2010, at 8:28 PM, Guy Olinger K2AV wrote:
>
>  > I think there may be a bit of extra shielding with the plate on the
>  > front of the board.  This puts grounded metal on both sides of the
>  > board.
>
>
>
> 73, Ed - KL7UW, WD2XSH/45
> ======================================
> BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
> EME: 144-QRT*, 432-100w, 1296-QRT*, 3400-fall 2010
> DUBUS Magazine USA Rep dubususa at hotmail.com
> ======================================
> *temp
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