Elecraft › [K3]

DIY DSP Rev D

Classic

List

Threaded

29 messages Options

DaveL G3TJP

DIY DSP Rev D

Take a look at the K3 mods section, guys. The DSP board add-on AF LPF piggyback board is now available as

K3DSPLPF, K3 DSP LPF Board $24.95

Just two tracks to cut and six through-board connections to be made. No problem at all for anyone who can figure out which end of a soldering iron is the hot end HI!

For the overseas purchasers, the cheapest shipping appears to be $40, but put a note in the comments section asking Elecraft to send by cheapest means, like First Class Mail. It's not insured, but my friends and I have never had anything go astray (yet HI! )

Adding the W9AC mods to create a lower bass rolloff frequency will make your DSP board equal to Rev D, although Elecraft's own component changes to achieve a similar result are different.

Please note, on the W9AC mod page, here:

http://www.n1eu.com/K3/k3audiomod.htm

all the parts can be obtained from Mouser.

4.7uF SMT 0603 ceramic cap part number is 80-C0603C475K9P (4 required)
0.47uF SMT 0603 ceramic cap part number is 80-C0603C474K9P (2 required)
1.0uF SMT 0603 ceramic cap part number is 80-C0603C105K9P (1 required)

The 100uF capacitors, C9 and C13 in the headphone circuit are SMT 5mm diameter low impedance, part number 647-UCD0J101MCL1GS and are 6.3V components, not 10V as W9AC states. (2 required)
Note, Elecraft themselves use 6.3V capacitors in the factory mod. 100uF/10v 5mm diameter capacitors are not commonly available, although Mouser do stock an audio grade 100uF/10v tantalum SMT capacitor that fits the board very nicely. The tantalums are Mouser part number 647-F951A107MBAAM1Q2, but are more expensive than the alternative aluminium electrolytic cap.

Note, working with 0603 size SMT components is not a task to be undertaken lightly. Considerable skill is needed to remove existing components and substitute the replacement values. If you are in ANY DOUBT as to your ability to make these changes, consider whether you need the mod at all and if you do, go for the DSP board exchange option, K3DSPUPGD, that Elecraft offers.

Happy New Year, everyone.

73 DaveL G3TJP
______________________________________________________________
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

Eric Swartz - WA6HHQ

Re: DIY DSP Rev D

Administrator

This will not make the DSP totally equivalent to Rev D. There are a
number of changes outside of the DSPLPF, and the low freq value changes
to the other components on the LPF board are quite different from those
of W9AC. We're not set up to support a mix of other changes to the board
if they are different.

We have a limited number of the LPF boards and are not set up to send
these out in bulk. We're just trying to help those who only want the LPF
change, and those who might have already made some low freq changes on
their own.

Our overseas shipping will be much less than $40 on these. Our sales
folks can help you with the cheapest method. I suspect international
first class will work OK for this small of a board.

We have uploaded a picture of the installed LPF at:
http://www.elecraft.com/K3/mods/dsplpf.jpg

73, Eric WA6HHQ
---

David Lankshear wrote:
> Take a look at the K3 mods section, guys. The DSP board add-on AF LPF piggyback board is now available as
>
> K3DSPLPF, K3 DSP LPF Board $24.95
>
> Just two tracks to cut and six through-board connections to be made. No problem at all for anyone who can figure out which end of a soldering iron is the hot end HI!
>

> For the overseas purchasers, the cheapest shipping appears to be $40, but put a note in the comments section asking Elecraft to send by cheapest means, like First Class Mail. It's not insured, but my friends and I have never had anything go astray (yet HI! )
>
> Adding the W9AC mods to create a lower bass rolloff frequency will make your DSP board equal to Rev D, although Elecraft's own component changes to achieve a similar result are different.
>
______________________________________________________________
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

Rick Prather

Re: DIY DSP Rev D

In reply to this post by DaveL G3TJP

On 12/31/2009, at 3:48 , David Lankshear wrote:
>>>>
> For the overseas purchasers, the cheapest shipping appears to be $40, but put a note in the comments section asking Elecraft to send by cheapest means, like First Class Mail. It's not insured, but my friends and I have never had anything go astray (yet HI! )
>>>>

I shipped a crystal filter to Slovakia using the small Priority Mail Flat Rate box for only about $16! A pleasant surprise..

Rick
K6LE

______________________________________________________________
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

Julian, G4ILO

Re: DIY DSP Rev D

In reply to this post by DaveL G3TJP

DaveL G3TJP wrote

Note, working with 0603 size SMT components is not a task to be undertaken lightly. Considerable skill is needed to remove existing components and substitute the replacement values.

I have very little experience with SMT components but I recall that I had to remove a couple to do one of the earlier K3 mods. I just used two soldering irons and applied them to both ends of the part at the same time and it was off in a jiffy. MUCH easier than removing parts from thru-hole boards.

So is this really as difficult as people make out?

Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

Guy, K2AV

Re: DIY DSP Rev D

Have a look at the mod. Other than trying to make Elecraft justify each
additional nickel, it's really whether you want to upgrade the DSP board or
not.

You do the stuff yourself, you're responsible for what happens, or doesn't.
Especially if you use a non-Elecraft mod. Replace/mod the board by the rules
and you're still in the stream for future changes. You're in the middle of
a work-in-progress by a responsive and sharp company. Any of you out there
think you're superior to what Elecraft is doing? And privy to the legally
private intellectual property that is driving it (and they'd be crazy to
publish)? I'm sure a very few of you are. But if not, you going to take
that on in a 4K$ radio over a cost differential less than the price of a
restaurant meal? Sounds like dropping the pound to save the shilling to me.

I'm going to order the board. Have other things to spend time on. Looking
at the picture of the LPF replacement board convinced me. There's more than
meets the eye. The little work I have done on my K3 were to restore it to
spec (repair) or upgrade it to a new spec, not redesign it.

When a problem has been hashed out on the reflector/lists, and Elecraft has
taken it on, I want the Elecraft solution. I've not seen anything done on
Elecraft equipment akin to W8JI's famous Drake or Yaesu mods. Unlikely on
Elecraft, because Wayne & co. would have picked it up early on,
re-engineered it to a commercially feasible way to permanently incorporate
it.

73, Guy.

On Fri, Jan 1, 2010 at 6:16 AM, Julian, G4ILO <[hidden email]>wrote:

>
>
>
> DaveL G3TJP wrote:
> >
> > Note, working with 0603 size SMT components is not a task to be
> undertaken
> > lightly. Considerable skill is needed to remove existing components and
> > substitute the replacement values.
> >
> I have very little experience with SMT components but I recall that I had
> to
> remove a couple to do one of the earlier K3 mods. I just used two soldering
> irons and applied them to both ends of the part at the same time and it was
> off in a jiffy. MUCH easier than removing parts from thru-hole boards.
>
> So is this really as difficult as people make out?
>
> -----
> Julian, G4ILO. K2 #392 K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
>
> --
> View this message in context:
> http://n2.nabble.com/DIY-DSP-Rev-D-tp4238315p4239293.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> 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
>

David Cutter

Re: DIY DSP Rev D

In reply to this post by DaveL G3TJP

Dave

I would gladly fit this daughter board and perhaps do the LF enhancement,
but several on this list seem to be saying that the exchange DSP board does
something more than these mods provide.

Can anyone clarify?

David
G3UNA

> Take a look at the K3 mods section, guys. The DSP board add-on AF LPF
> piggyback board is now available as
>
> K3DSPLPF, K3 DSP LPF Board $24.95
>
> Just two tracks to cut and six through-board connections to be made. No
> problem at all for anyone who can figure out which end of a soldering iron
> is the hot end HI!
> >
> 73 DaveL G3TJP
>

Don Wilhelm-4

Re: DIY DSP Rev D

David,

Yes, Wayne, Lyle and Eric have stated that the results were quite
similar to the W9AC mods, but were done in a different manner (I presume
it was easier to accomplish resistor changes in board manufacturing).
There may have been some other insignificant 'tweaks' to the hardware
done at the same time (just because it was convenient). But there are
no functional or performance enhancements associated with those changes.
I would think if Elecraft had made improvements, they want to advertise
that fact, a better K3 should sell better.

Some of these questions are beginning to sound as though there is some
"conspiracy" going on. The fact that a board level B can be upgraded to
assembly level D (with the component changes and the LPF) says that the
board printed traces has not changed. Note that the board level relates
only to the printed traces, solder pads, etc. The assembly level can be
quite different.
From the information that we have, the original board was assembly B
(same as the board level), then the low frequency response was extended
resulting in level C - finally, Eric decided to add the LPF since it was
available, resulting in assembly level D.

73,
Don W3FPR

David Cutter wrote:

> Dave
>
> I would gladly fit this daughter board and perhaps do the LF enhancement,
> but several on this list seem to be saying that the exchange DSP board does
> something more than these mods provide.
>
> Can anyone clarify?
>
> David
> G3UNA
>
>

Brett Howard

Re: DIY DSP Rev D

I'd just also kinda like to know what is different in that I currently
have a rev B board that I've changed out the C9 and C13 I think they
were with 100uF caps. I used properly sized caps designed for that pad
layout and used professional tools to do the job. Thus this is the same
as if those caps were put there from a production line.

I have also installed the LPF daughter card in my unit.

So if all I need to do is make a few other changes and I'm at REV D I'd
personally rather make those changes to my current board. My K3 has all
the rest of the mods performed on it and I'm willing to do the work to
keep it up-to-date.

I already have a Rev. D board on order. It appears to me that I should
cancel my order and start looking at doing some of the W9AC mods using
SMT parts.

I'm not saying conspiracy here but I do find it a bit odd that there are
many other application notes explaining how to perform modifications to
make improvements to other audio circuits, and RF immunity improvements,
ALC improvements.... Why not release an app note on the rework needed
and let users decide if they want to carry out the modifications or buy
a replacement board.

Heck on the negative ALC mod I didn't want a mod that messy in my radio
and they offered to sell a replacement board for a nominal fee. I
jumped at the time savings (and the fact that the new board used
discrete R's rather than R-packs which Elecraft found to be leaky).
Couple that with the fact that I end up with a much cleaner solution and
I'm a very happy and very informed customer. In all true honesty I
think the reason why this set of changes is less documented is because
it happened in several stages here and there and people don't want to
spend the time to go back through and find all the changes and make an
app note about them. But thats just an educated guess from another man
who works in the same field.

~Brett (KC7OTG)

On Sat, 2010-01-02 at 07:51 -0500, Don Wilhelm wrote:

> David,
>
> Yes, Wayne, Lyle and Eric have stated that the results were quite
> similar to the W9AC mods, but were done in a different manner (I presume
> it was easier to accomplish resistor changes in board manufacturing).
> There may have been some other insignificant 'tweaks' to the hardware
> done at the same time (just because it was convenient). But there are
> no functional or performance enhancements associated with those changes.
> I would think if Elecraft had made improvements, they want to advertise
> that fact, a better K3 should sell better.
>
> Some of these questions are beginning to sound as though there is some
> "conspiracy" going on. The fact that a board level B can be upgraded to
> assembly level D (with the component changes and the LPF) says that the
> board printed traces has not changed. Note that the board level relates
> only to the printed traces, solder pads, etc. The assembly level can be
> quite different.
> From the information that we have, the original board was assembly B
> (same as the board level), then the low frequency response was extended
> resulting in level C - finally, Eric decided to add the LPF since it was
> available, resulting in assembly level D.
>
> 73,
> Don W3FPR
>
> David Cutter wrote:
> > Dave
> >
> > I would gladly fit this daughter board and perhaps do the LF enhancement,
> > but several on this list seem to be saying that the exchange DSP board does
> > something more than these mods provide.
> >
> > Can anyone clarify?
> >
> > David
> > G3UNA
> >
> >
> ______________________________________________________________
> 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

Bob Naumann W5OV

Re: DIY DSP Rev D

The point is that the upgrade is being made available at a price that is low
enough that swapping out the board is just a whole lot easier to do. By the
time you extract the old DSP board and begin making mods to it (that you
might screw up) you could have installed the new one and had the radio back
on the air. I fail to understand the angst being expressed here about all of
this. The most tedious part of this is removing and sorting all the screws
from the top, bottom front and side(with handle).

I did mine yesterday and it went without a hitch - save those screws that
prevent the front panel headers from coming apart easily. I replaced the
offending pan head screws with flatheads while I had the whole thing apart,
and the front panel with the new DSP board slid back into place without any
interference and all connectors mated perfectly. Perhaps that should be a
change to the original build?

73,

Bob W5OV

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Brett Howard
Sent: Saturday, January 02, 2010 7:17 AM
To: [hidden email]
Cc: [hidden email]
Subject: Re: [Elecraft] DIY DSP Rev D

I'd just also kinda like to know what is different in that I currently
have a rev B board that I've changed out the C9 and C13 I think they
were with 100uF caps. I used properly sized caps designed for that pad
layout and used professional tools to do the job. Thus this is the same
as if those caps were put there from a production line.

I have also installed the LPF daughter card in my unit.

So if all I need to do is make a few other changes and I'm at REV D I'd
personally rather make those changes to my current board. My K3 has all
the rest of the mods performed on it and I'm willing to do the work to
keep it up-to-date.

I already have a Rev. D board on order. It appears to me that I should
cancel my order and start looking at doing some of the W9AC mods using
SMT parts.

I'm not saying conspiracy here but I do find it a bit odd that there are
many other application notes explaining how to perform modifications to
make improvements to other audio circuits, and RF immunity improvements,
ALC improvements.... Why not release an app note on the rework needed
and let users decide if they want to carry out the modifications or buy
a replacement board.

Heck on the negative ALC mod I didn't want a mod that messy in my radio
and they offered to sell a replacement board for a nominal fee. I
jumped at the time savings (and the fact that the new board used
discrete R's rather than R-packs which Elecraft found to be leaky).
Couple that with the fact that I end up with a much cleaner solution and
I'm a very happy and very informed customer. In all true honesty I
think the reason why this set of changes is less documented is because
it happened in several stages here and there and people don't want to
spend the time to go back through and find all the changes and make an
app note about them. But thats just an educated guess from another man
who works in the same field.

~Brett (KC7OTG)

On Sat, 2010-01-02 at 07:51 -0500, Don Wilhelm wrote:

enhancement,
> > but several on this list seem to be saying that the exchange DSP board
does

> > something more than these mods provide.
> >
> > Can anyone clarify?
> >
> > David
> > G3UNA
> >
> >
> ______________________________________________________________
> 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

rfenabled

Re: DIY DSP Rev D

In reply to this post by Don Wilhelm-4

The bandwidth being consumed on this topic is puzzling to say the least.

Would not a phone call or email direct to Elecraft get you the info you want first hand?

Surely the manufacturer has a right (read the fine print in their published documents) to make changes as and when they feel it appropriate and I would think they have no obligation to explain why they do what they do.

I don't see or smell anything bad in the air other than a large number of postings questioning why they are offering a Rev D board and LPF....

The decision to be made is whether you want the latest production board or not, I wonder if YaeComWood would offer such service?

YMMV

73's
Gary
#679 with no mods done and working Dx daily..(:-))

As Don wrote:

Snip

Yes, Wayne, Lyle and Eric have stated that the results were quite
similar to the W9AC mods, but were done in a different manner (I presume
it was easier to accomplish resistor changes in board manufacturing).
There may have been some other insignificant 'tweaks' to the hardware
done at the same time (just because it was convenient). But there are
no functional or performance enhancements associated with those changes.
I would think if Elecraft had made improvements, they want to advertise
that fact, a better K3 should sell better.

Some of these questions are beginning to sound as though there is some
"conspiracy" going on. The fact that a board level B can be upgraded to
assembly level D (with the component changes and the LPF) says that the
board printed traces has not changed. Note that the board level relates
only to the printed traces, solder pads, etc. The assembly level can be
quite different.
From the information that we have, the original board was assembly B
(same as the board level), then the low frequency response was extended
resulting in level C - finally, Eric decided to add the LPF since it was
available, resulting in assembly level D.

73,
Don W3FPR
End Snip
Sent via BlackBerry® from Telstra

-----Original Message-----
From: Don Wilhelm <[hidden email]>
Date: Sat, 02 Jan 2010 07:51:06
To: David Cutter<[hidden email]>
Cc: <[hidden email]>
Subject: Re: [Elecraft] DIY DSP Rev D

David,

Yes, Wayne, Lyle and Eric have stated that the results were quite
similar to the W9AC mods, but were done in a different manner (I presume
it was easier to accomplish resistor changes in board manufacturing).
There may have been some other insignificant 'tweaks' to the hardware
done at the same time (just because it was convenient). But there are
no functional or performance enhancements associated with those changes.
I would think if Elecraft had made improvements, they want to advertise
that fact, a better K3 should sell better.

Some of these questions are beginning to sound as though there is some
"conspiracy" going on. The fact that a board level B can be upgraded to
assembly level D (with the component changes and the LPF) says that the
board printed traces has not changed. Note that the board level relates
only to the printed traces, solder pads, etc. The assembly level can be
quite different.
From the information that we have, the original board was assembly B
(same as the board level), then the low frequency response was extended
resulting in level C - finally, Eric decided to add the LPF since it was
available, resulting in assembly level D.

73,
Don W3FPR

David Cutter wrote:

______________________________________________________________
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

The Smiths

Re: DIY DSP Rev D

In reply to this post by Don Wilhelm-4

Why is Don, or any other person other than Eric or Wayne answering this simple question? Both can make ONE simple statement that tells the enquiring people everything they need to know. I'm tired of all this conjecture, when the answer should simply be told by the very company that knows what's going on. No offence Don...

Thank you for your intended help, but certainly I think that the people asking the questions, knowing full well both Eric and Wayne monitor this board, can clear this up themselves. Then I can get back to reading my daily email without the 400 e-mails about the same question over and over again. Thank you.

And now, if you will, Wayne....

M

> Date: Sat, 2 Jan 2010 07:51:06 -0500
> From: [hidden email]
> To: [hidden email]
> CC: [hidden email]
> Subject: Re: [Elecraft] DIY DSP Rev D
>
> David,
>
> Yes, Wayne, Lyle and Eric have stated that the results were quite
> similar to the W9AC mods, but were done in a different manner (I presume
> it was easier to accomplish resistor changes in board manufacturing).
> There may have been some other insignificant 'tweaks' to the hardware
> done at the same time (just because it was convenient). But there are
> no functional or performance enhancements associated with those changes.
> I would think if Elecraft had made improvements, they want to advertise
> that fact, a better K3 should sell better.
>
> Some of these questions are beginning to sound as though there is some
> "conspiracy" going on. The fact that a board level B can be upgraded to
> assembly level D (with the component changes and the LPF) says that the
> board printed traces has not changed. Note that the board level relates
> only to the printed traces, solder pads, etc. The assembly level can be
> quite different.
> From the information that we have, the original board was assembly B
> (same as the board level), then the low frequency response was extended
> resulting in level C - finally, Eric decided to add the LPF since it was
> available, resulting in assembly level D.
>
> 73,
> Don W3FPR
>
> David Cutter wrote:
> > Dave
> >
> > I would gladly fit this daughter board and perhaps do the LF enhancement,
> > but several on this list seem to be saying that the exchange DSP board does
> > something more than these mods provide.
> >
> > Can anyone clarify?
> >
> > David
> > G3UNA
> >
> >
> ______________________________________________________________
> 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

_________________________________________________________________
Hotmail: Trusted email with powerful SPAM protection.
http://clk.atdmt.com/GBL/go/177141665/direct/01/
______________________________________________________________
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

Grant Youngman

Re: DIY DSP Rev D

Maybe it's possible to assume that even Elecraft owners and employees deserve a weekend off from the 729 questions (of which perhaps 12 are unique) that get asked around here :-)

Don does a yeoman-like job of filling in .. Of course, the ultimate answer to everything is 42, which should be sufficient, except of course the question isn't known :-)

I have a "C" board which I obtained on a swap some time ago. I have the LPF board ordered to add. Do I (1) believe in conspiriacies or (2) plan to devote a week and 14 web pages to a detailed before and after analysis? No, neither. I don't understand why there are so many questions about "what else" this board may do. It has improved LF response, and (soon) an LPF to remove some high frequency artifacts. I like the improved audio response of the "C". I doubt the LPF will greatly enhance my enjoyment of either the radio, or ham radio, but there's no reason not to stay current with latest rev levels when possible for what is essentially beer money :-)

Grant/NQ5T

On Jan 2, 2010, at 2:57 PM, The Smiths wrote:

>
> Why is ..any other person other than Eric or Wayne answering this simple question?
______________________________________________________________
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

Don Wilhelm-4

Re: DIY DSP Rev D

In reply to this post by The Smiths

M,

Because they have answered it already, and Eric answered just the day
before all this started. You can check the archives if you want. I was
just re-stating what Wayne, Lyle and Eric had already stated.

73,
Don W3FPR

The Smiths wrote:

> Why is Don, or any other person other than Eric or Wayne answering this simple question? Both can make ONE simple statement that tells the enquiring people everything they need to know. I'm tired of all this conjecture, when the answer should simply be told by the very company that knows what's going on. No offence Don...
>
> Thank you for your intended help, but certainly I think that the people asking the questions, knowing full well both Eric and Wayne monitor this board, can clear this up themselves. Then I can get back to reading my daily email without the 400 e-mails about the same question over and over again. Thank you.
>
> And now, if you will, Wayne....
>
> M
>
>
>> Date: Sat, 2 Jan 2010 07:51:06 -0500
>> From: [hidden email]
>> To: [hidden email]
>> CC: [hidden email]
>> Subject: Re: [Elecraft] DIY DSP Rev D
>>
>> David,
>>
>> Yes, Wayne, Lyle and Eric have stated that the results were quite
>> similar to the W9AC mods, but were done in a different manner (I presume
>> it was easier to accomplish resistor changes in board manufacturing).
>> There may have been some other insignificant 'tweaks' to the hardware
>> done at the same time (just because it was convenient). But there are
>> no functional or performance enhancements associated with those changes.
>> I would think if Elecraft had made improvements, they want to advertise
>> that fact, a better K3 should sell better.
>>
>> Some of these questions are beginning to sound as though there is some
>> "conspiracy" going on. The fact that a board level B can be upgraded to
>> assembly level D (with the component changes and the LPF) says that the
>> board printed traces has not changed. Note that the board level relates
>> only to the printed traces, solder pads, etc. The assembly level can be
>> quite different.
>> From the information that we have, the original board was assembly B
>> (same as the board level), then the low frequency response was extended
>> resulting in level C - finally, Eric decided to add the LPF since it was
>> available, resulting in assembly level D.
>>
>> 73,
>> Don W3FPR
>>
>> David Cutter wrote:
>>
>>> Dave
>>>
>>> I would gladly fit this daughter board and perhaps do the LF enhancement,
>>> but several on this list seem to be saying that the exchange DSP board does
>>> something more than these mods provide.
>>>
>>> Can anyone clarify?
>>>
>>> David
>>> G3UNA
>>>
>>>
>>>
>> ______________________________________________________________
>> 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
>>
>
> _________________________________________________________________
> Hotmail: Trusted email with powerful SPAM protection.
> http://clk.atdmt.com/GBL/go/177141665/direct/01/
> ______________________________________________________________
> 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
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 9.0.725 / Virus Database: 270.14.124/2597 - Release Date: 01/02/10 03:22:00
>
>

Brett Howard

Re: DIY DSP Rev D

In reply to this post by Bob Naumann W5OV

See its not angst... Some of us like to open the radio up and melt a
little solder inside. I've alredy done most of the mods I believe to
bring my board up to Rev. D. I've already placed an order for a Rev. D
board but if the mods aren't much more than what I've already done I'd
rather bring it up to snuff myself.

>From what I've read the Rev. D boards might even be reworked boards
anyway... If they're not complete production boards and they are
shipping a reworked board then I'd much rather just be able to do it
myself so that I know what the differences are from the schematics that
the radio shipped with.

~Brett (KC7OTG)

On Sat, 2010-01-02 at 07:29 -0600, Bob Naumann wrote:
> By the
> time you extract the old DSP board and begin making mods to it (that
> you
> might screw up) you could have installed the new one and had the radio
> back
> on the air. I fail to understand the angst being expressed here about
> all of
> this.

______________________________________________________________
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

Bob Naumann W5OV

Re: DIY DSP Rev D

Who said they "might even be reworked boards"?

On what do you base this claim?

-----Original Message-----
From: Brett Howard [mailto:[hidden email]]
Sent: Saturday, January 02, 2010 4:53 PM
To: Bob Naumann
Cc: [hidden email]; [hidden email]
Subject: RE: [Elecraft] DIY DSP Rev D

See its not angst... Some of us like to open the radio up and melt a
little solder inside. I've alredy done most of the mods I believe to
bring my board up to Rev. D. I've already placed an order for a Rev. D
board but if the mods aren't much more than what I've already done I'd
rather bring it up to snuff myself.

>From what I've read the Rev. D boards might even be reworked boards
anyway... If they're not complete production boards and they are
shipping a reworked board then I'd much rather just be able to do it
myself so that I know what the differences are from the schematics that
the radio shipped with.

~Brett (KC7OTG)

On Sat, 2010-01-02 at 07:29 -0600, Bob Naumann wrote:
> By the
> time you extract the old DSP board and begin making mods to it (that
> you
> might screw up) you could have installed the new one and had the radio
> back
> on the air. I fail to understand the angst being expressed here about
> all of
> this.

______________________________________________________________
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

Bob Garrett

Re: DIY DSP Rev D

Bret,

Please send us the details and source claiming these are reworked boards.

______________________________________________________________
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

The Smiths

Re: DIY DSP Rev D

In reply to this post by The Smiths

In that case I would rather see someone keep re-posting Eric's/ Wayne's posts than try to answer the persons questions themselves. It just keep bringing up more questions and more e-mails asking the same thing and for more "proof". I can read the same answer from Eric and Wayne 100 times before I want to see the "telephone game" played on the reflector with everyone answer with their "idea" on why the original post said.

M

Date: Sat, 2 Jan 2010 15:13:00 -0700
From: [hidden email]
To: [hidden email]
CC: [hidden email]
Subject: Re: [Elecraft] DIY DSP Rev D

My guess is that both Eric and Wayne are tired of restating answers for people who are too lazy or thoughtless to check the archives for the answers they've already given. Don apparently has more time and patience.

Dave AB7E

The Smiths wrote:
Why is Don, or any other person other than Eric or Wayne answering this simple question? Both can make ONE simple statement that tells the enquiring people everything they need to know. I'm tired of all this conjecture, when the answer should simply be told by the very company that knows what's going on. No offence Don...

Thank you for your intended help, but certainly I think that the people asking the questions, knowing full well both Eric and Wayne monitor this board, can clear this up themselves. Then I can get back to reading my daily email without the 400 e-mails about the same question over and over again. Thank you.

And now, if you will, Wayne....

M

Date: Sat, 2 Jan 2010 07:51:06 -0500
From: [hidden email]
To: [hidden email]
CC: [hidden email]
Subject: Re: [Elecraft] DIY DSP Rev D

David,

Yes, Wayne, Lyle and Eric have stated that the results were quite
similar to the W9AC mods, but were done in a different manner (I presume
it was easier to accomplish resistor changes in board manufacturing).
There may have been some other insignificant 'tweaks' to the hardware
done at the same time (just because it was convenient). But there are
no functional or performance enhancements associated with those changes.
I would think if Elecraft had made improvements, they want to advertise
that fact, a better K3 should sell better.

Some of these questions are beginning to sound as though there is some
"conspiracy" going on. The fact that a board level B can be upgraded to
assembly level D (with the component changes and the LPF) says that the
board printed traces has not changed. Note that the board level relates
only to the printed traces, solder pads, etc. The assembly level can be
quite different.
>From the information that we have, the original board was assembly B
(same as the board level), then the low frequency response was extended
resulting in level C - finally, Eric decided to add the LPF since it was
available, resulting in assembly level D.

73,
Don W3FPR

David Cutter wrote:

Dave

I would gladly fit this daughter board and perhaps do the LF enhancement,
but several on this list seem to be saying that the exchange DSP board does
something more than these mods provide.

Can anyone clarify?

David
G3UNA

______________________________________________________________
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

_________________________________________________________________
Hotmail: Trusted email with powerful SPAM protection.
http://clk.atdmt.com/GBL/go/177141665/direct/01/
______________________________________________________________
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

_________________________________________________________________
Hotmail: Free, trusted and rich email service.
http://clk.atdmt.com/GBL/go/171222984/direct/01/
______________________________________________________________
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

Mike Harris

Re: DIY DSP Rev D

In reply to this post by Bob Naumann W5OV

G'day,

There is much to be said in favour of reworked boards. At least
they've had a good burn in to get rid of infant mortality. I recall
reading many years ago that general aviation folks often preferred
avionics that had been once through the repair shop.

Inevitably something has to be done with the returned boards and
rework to revision D status seems likely otherwise there wouldn't be
the difference in price between new and swap-out. I doubt that
Elecraft would release a butchered board, their reputation would
suffer. Personally I couldn't care less if my "D" was a "B">"C">"D"
as long as it did the same as a pure "D".

I can confirm that installing the new board is a relatively trivial
job and I had to remove all the Sub RX hardware from mine as well as
install a new DVR module.

The results are a none quantifiable pleasing.

Regards,

Mike VP8NO

----- Original Message -----
From: "Bob Naumann" <[hidden email]>
To: "'Brett Howard'" <[hidden email]>
Cc: <[hidden email]>; <[hidden email]>
Sent: Saturday, January 02, 2010 9:15 PM
Subject: Re: [Elecraft] DIY DSP Rev D

> Who said they "might even be reworked boards"?
>
> On what do you base this claim?
>
>
> -----Original Message-----
> From: Brett Howard [mailto:[hidden email]]
> Sent: Saturday, January 02, 2010 4:53 PM
> To: Bob Naumann
> Cc: [hidden email]; [hidden email]
> Subject: RE: [Elecraft] DIY DSP Rev D
>
> See its not angst... Some of us like to open the radio up and melt
> a
> little solder inside. I've alredy done most of the mods I believe
> to
> bring my board up to Rev. D. I've already placed an order for a
> Rev. D
> board but if the mods aren't much more than what I've already done
> I'd
> rather bring it up to snuff myself.
>
>>From what I've read the Rev. D boards might even be reworked
>>boards
> anyway... If they're not complete production boards and they are
> shipping a reworked board then I'd much rather just be able to do
> it
> myself so that I know what the differences are from the schematics
> that
> the radio shipped with.
>
> ~Brett (KC7OTG)

Don Wilhelm-4

Re: DIY DSP Rev D

In reply to this post by Grant Youngman

Actually Grant, the *real* answer is *Maybe*

73,
Don W3FPR

Grant Youngman wrote:
> <snip> Of course, the ultimate answer to everything is 42, which should be sufficient, except of course the question isn't known :-)
>
>
>
______________________________________________________________
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

Brett Howard

Re: DIY DSP Rev D

In reply to this post by Bob Naumann W5OV

It says things on the website that lead me to believe this:

Note that some of the upgrade Rev D DSPs may have their assembly
revision level marked by hand, and its possible a few not have been
marked with new Rev D, but if the LPF piggyback board is added on those
DSP boards, or if they have the Rev D assembly marking, they are Rev D.

I have a rev B board that I've added the LPF board onto and I've also
done the 100uF C9/C13 mods... I just don't want to be putting in pretty
much the same board when mine arrives.

~Brett (KC7OTG)

On Sat, 2010-01-02 at 18:15 -0600, Bob Naumann wrote:

> Who said they "might even be reworked boards"?
>
> On what do you base this claim?
>
>
> -----Original Message-----
> From: Brett Howard [mailto:[hidden email]]
> Sent: Saturday, January 02, 2010 4:53 PM
> To: Bob Naumann
> Cc: [hidden email]; [hidden email]
> Subject: RE: [Elecraft] DIY DSP Rev D
>
> See its not angst... Some of us like to open the radio up and melt a
> little solder inside. I've alredy done most of the mods I believe to
> bring my board up to Rev. D. I've already placed an order for a Rev. D
> board but if the mods aren't much more than what I've already done I'd
> rather bring it up to snuff myself.
>
> >From what I've read the Rev. D boards might even be reworked boards
> anyway... If they're not complete production boards and they are
> shipping a reworked board then I'd much rather just be able to do it
> myself so that I know what the differences are from the schematics that
> the radio shipped with.
>
> ~Brett (KC7OTG)
>
> On Sat, 2010-01-02 at 07:29 -0600, Bob Naumann wrote:
> > By the
> > time you extract the old DSP board and begin making mods to it (that
> > you
> > might screw up) you could have installed the new one and had the radio
> > back
> > on the air. I fail to understand the angst being expressed here about
> > all of
> > this.
>