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Fw: Hardware Differences K3

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MM0BQI

Fw: Hardware Differences K3

Sorry, missed the a bit of info! K3

----- Original Message -----
From: MM0BQI
To: [hidden email]
Sent: Wednesday, December 16, 2009 4:33 PM
Subject: Hardware Differences

Are there any great hardware differences between a 500 serial number and one of the latest production batch?
Thanks
Jim
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Buck - k4ia

Re: Fw: Hardware Differences K3

I missed the news on a new DSP board also. I have K3 #101. Is this
something I should be looking at?

Buck
k4ia

In a message dated 12/16/2009 11:38:58 A.M. Eastern Standard Time,
[hidden email] writes:

Sorry, missed the a bit of info! K3

----- Original Message -----
From: MM0BQI
To: [hidden email]
Sent: Wednesday, December 16, 2009 4:33 PM
Subject: Hardware Differences

Are there any great hardware differences between a 500 serial number and
one of the latest production batch?
Thanks
Jim
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Steve Ellington

Re: 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
[hidden email]
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Buck - k4ia

Re: Fw: Hardware Differences K3

In reply to this post by MM0BQI

Thanks for re-posting the info. I am just not sure how much of a
difference this makes to those of us who aren't too concerned about hi-fi audio.
If I'm listening to a CW note at 700hz, or normal SSB, can what's below
300hz really matter?

Buck
k4ia

In a message dated 12/16/2009 3:56:48 P.M. Eastern Standard Time,
[hidden email] writes:

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
[hidden email]

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Bob Cunnings NW8L

Re: Fw: Hardware Differences K3

In reply to this post by Steve Ellington

Hmmm, no mention of the (hardware) AF low pass filter in the
announcement quoted below... can Elecraft confirm/deny? There is no
documentation of the K3DSPUPGD option on the order page, and nothing
in the "K3 Alerts, Enhancements and Application Notes" page either.

Bob NW8L

On Wed, Dec 16, 2009 at 1:56 PM, Steve Ellington <[hidden email]> wrote:

> 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
> [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

K2QI

Re: Fw: Hardware Differences K3

In reply to this post by Buck - k4ia

I'm wondering the same thing myself as I've held off on the upgrade. I
couldn't really come up with any outstanding reasons to improve something I
didn't believe needed improving.

Anyway, I'm open to reasons. If someone can give me a good one, perhaps
I'll swap the boards out.

73,
James K2QI

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of [hidden email]
Sent: Wednesday, December 16, 2009 4:05 PM
To: [hidden email]; [hidden email]
Subject: Re: [Elecraft] Fw: Hardware Differences K3

Thanks for re-posting the info. I am just not sure how much of a
difference this makes to those of us who aren't too concerned about hi-fi
audio.
If I'm listening to a CW note at 700hz, or normal SSB, can what's below
300hz really matter?

Buck
k4ia

______________________________________________________________
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--... ...-- -.. . .--- .- -- . ...

hf4me

Re: Fw: Hardware Differences K3

In reply to this post by Steve Ellington

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" <[hidden email]>
To: <[hidden email]>; <[hidden email]>
Sent: Wednesday, December 16, 2009 2:56 PM
Subject: Re: [Elecraft] Fw: Hardware Differences K3

K2QI

Re: 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: [hidden email]
[mailto:[hidden email]] On Behalf Of Jim Miller KG0KP
Sent: Thursday, December 17, 2009 12:54 AM
To: Steve Ellington; [hidden email]
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" <[hidden email]>
To: <[hidden email]>; <[hidden email]>
Sent: Wednesday, December 16, 2009 2:56 PM
Subject: Re: [Elecraft] Fw: Hardware Differences K3

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--... ...-- -.. . .--- .- -- . ...

hf4me

Re: Fw: Hardware Differences K3

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" <[hidden email]>
To: "'Jim Miller KG0KP'" <[hidden email]>; "'Steve Ellington'"
<[hidden email]>; <[hidden email]>
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: [hidden email]
> [mailto:[hidden email]] On Behalf Of Jim Miller KG0KP
> Sent: Thursday, December 17, 2009 12:54 AM
> To: Steve Ellington; [hidden email]
> 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" <[hidden email]>
> To: <[hidden email]>; <[hidden email]>
> 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
>> [hidden email]
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>