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srife

K3DSPUPGD

I find no actual description of what the K3DSPUPGD (REV C) consists
of. Does it include the lowpass audio filter that everyone keeps talking
about, or is that an additional add on to the REV C DSP board?

Could someone from Elecraft please straighten me out on this so I
can determine if there is something additional I need to order for the REV C
DSP upgrade board? All this talk on the subject has got me confused.

Stan Rife
W5EWA

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Don Wilhelm-4

Re: K3DSPUPGD

Stan,

If I understand correctly, the new DSP boards will be Rev D and will
include the LPF as well as the increased low frequency audio response.
I am not certain where I received that information, so I could be
suffering from a 'memory loss incident'. But whatever the board Rev
number is, it includes the LPF.

73,
Don W3FPR

[hidden email] wrote:

> I find no actual description of what the K3DSPUPGD (REV C) consists
> of. Does it include the lowpass audio filter that everyone keeps talking
> about, or is that an additional add on to the REV C DSP board?
>
> Could someone from Elecraft please straighten me out on this so I
> can determine if there is something additional I need to order for the REV C
> DSP upgrade board? All this talk on the subject has got me confused.
>
>
> Stan Rife
> W5EWA
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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Bob Cunnings NW8L

Re: K3DSPUPGD

In reply to this post by srife

This question has been asked several times recently, without direct
response from Elecraft. However, W4TV apparently made contact and
posted an answer the other day:

http://www.mail-archive.com/elecraft@.../msg87611.html

Bob NW8L

On Sat, Dec 19, 2009 at 8:33 AM, <[hidden email]> wrote:

Joe Subich, W4TV-4

Re: K3DSPUPGD

In reply to this post by srife

Perhaps this information quoted from a private e-mail received from
Eric within the last 48 hours will provide a definitive answer:

> ALL of the DSP UPGRADE boards have the LPF that rolls off above 4-4.5
> kHz in addition to the low frequency response parts.
>
> We originally thought that the upgrade board would only have the low
> freq components and wouldn't have the LPF - that's what I originally
> posted. But we were able to get the LPF board here in time before we
> shipped the first upgrade, so I added that to the upgraded DSPs at no
> additional charge.
>
> Note that we should be referring to the assembly level of the DSP
> board, not the raw PCB fab revision level. When the LPF is added to
> the earlier DSP board that already has the other low freq component
> changes, it rolls the assembly from Rev C to Rev D. All DSP UPGRADE
> boards are at Assembly Rev D. Also, production K3 DSPs that have all
> of the changes incorporated in new PCB are also assembly Rev D, since
> they are functionally identical.
>
> All K3s currently ship with the Assembly Rev D DSP that includes all
> the mods.

73,

... Joe, W4TV

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of
> [hidden email]
> Sent: Saturday, December 19, 2009 10:34 AM
> To: [hidden email]; 'Lisa Jones - Elecraft Sales'
> Subject: [Elecraft] [K3] K3DSPUPGD
>
>
> I find no actual description of what the K3DSPUPGD (REV
> C) consists of. Does it include the lowpass audio filter that
> everyone keeps talking about, or is that an additional add on
> to the REV C DSP board?
>
> Could someone from Elecraft please straighten me out on
> this so I can determine if there is something additional I
> need to order for the REV C DSP upgrade board? All this talk
> on the subject has got me confused.
>
>
> Stan Rife
> W5EWA
>