[Elecraft] K3: Noisy Receiver? - not here!

[Paul Christensen]

One outstanding question that's not addressed in the announcement below 
relates to whether or not Main DSP Board Rev. C includes the hardware audio 
LPF.  So, if a K3 owner purchases the K3DSPUPGD upgrade today, will it also 
contain the audio LPF?

Paul, W9AC

----- Original Message ----- 
From: "Bill W4ZV" <btippett at alum.mit.edu>
To: <elecraft at mailman.qth.net>
Sent: Thursday, December 17, 2009 8:59 AM
Subject: Re: [Elecraft] K3: Noisy Receiver? - not here!


>
>
>
> Bill W4ZV wrote:
>>
>> You will not need to modify a new K3.  The mod was implemented around S/N
>> 3010 last April/May.  New unit S/Ns must be approaching 4000 by now.
>>
>
> For the record, here's the information from Elecraft:
>
>
> "We started shipping the latest DSP boards, Rev C, approximately May 1st,
> 2009.  Any K3 DSP board Rev C or later will have the extended low end 
> audio
> response enhancement.
>
> This corresponds approximately to K3 serial number 3018, plus or minus
> 10-20.
>
> Since assembled -Fs and kit K3s flow through different manufacturing 
> paths,
> there is a slight variance in s/n for the phase-in.
>
> If in doubt, check the DSP board Rev as noted above.
>
> A picture of the Rev label location :
>
> http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm
>
> (The 'C', or later, revision letter at the bottom of the label is what is
> important.)"
>
>
> To order the mod kit, order K3DSPUPGD here:
>
> http://www.elecraft.com/order_form_parts.htm#K3%20Parts
>
>
> 73,  Bill
>
> -- 
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