[Elecraft] Fw: Hardware Differences K3

[Jim Miller KG0KP]

Sorry, I was talking about actually installing the individual replacement 
components on the original boards myself vs replacing the two boards and if 
that was possible. (OK, I'm cheap(retired), trying to see if I could get by 
for something less than $140). I think I would rather buy another filter or 
a W2 instead and live with what I have in DSPs now.

Tnx es 73, de Jim KG0KP

----- Original Message ----- 
From: "James Sarte" <k2qi.nyc at gmail.com>
To: "'Jim Miller KG0KP'" <JimMiller at STL-OnLine.Net>; "'Steve Ellington'" 
<n4lq at carolina.rr.com>; <elecraft at mailman.qth.net>
Sent: Wednesday, December 16, 2009 11:58 PM
Subject: Re: [Elecraft] Fw: Hardware Differences K3


> Jim,
>
> Replacing the DSP board isn't that difficult; remove the front panel, and
> you'll see the DSP board attached to the rear of the FP via a couple of
> stand-offs and some screws.  If you take your time, it could be done in
> under 30 minutes.  If you ordered your K3 assembled or have never taken 
> the
> FP off before, download the assembly manual from the website and you can 
> see
> the required steps beforehand.
>
> 73 de James K2QI
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jim Miller KG0KP
> Sent: Thursday, December 17, 2009 12:54 AM
> To: Steve Ellington; elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Fw: Hardware Differences K3
>
> Is this a mod that can be done in the field? How involved is it? What is 
> the
>
> parts price?
>
> Tnx es 73, de Jim KG0KP K3 sn1442
>
> ----- Original Message ----- 
> From: "Steve Ellington" <n4lq at carolina.rr.com>
> To: <k4ia at aol.com>; <elecraft at mailman.qth.net>
> Sent: Wednesday, December 16, 2009 2:56 PM
> Subject: Re: [Elecraft] Fw: Hardware Differences K3
>
>
>> We started shipping the current DSP boards, Rev C, approximately March
>> 6th, 2009.
>> Any K3 DSP board Rev C or later will have the extended low end audio
>> frequency response h/w enhancement.
>>
>> This corresponds approximately to K3 serial number 2800, 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.
>>
>> These changes basically added additional h/w low end frequency response
>> below 300 Hz. You need to also have the latest K3 f/w to take advantage
>> of this. Of course, you can also tailor (and limit) your RX and TX
>> response via the K3's IF Shift and B/W controls and by using the TX and
>> RX Equalizer entries.
>>
>> A picture of the Rev label location on the DSP board and additional info
>> is at:
>> 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.)
>>
>> We have added to our parts and mod kits page an option, K3DSPUPGD to
>> swap out your current DSP for one upgraded to the latest Rev C changes.
>> The cost will be $69.00 plus shipping. Order placed via this page will
>> start shipping approximately in 4 weeks, around Nov 9.
>>
>> Steve
>> N4LQ
>> N4LQ at carolina.rr.com
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