New "Remote Mic Header" Aftermarket K2 Accessory

[Gary Hvizdak]

We have designed another Rework Eliminator(TM) K2 accessory.  Our latest
offering is a K2 Remote Mic Header assembly.  It consists of two tiny
four-layer PCBs which fit between the K2's Front Panel and Control circuit
boards.  As with our un-module header kit, this new product also eliminates
the need for substantial disassembly of the K2 enclosure.  Once it's
installed reconfiguring your K2 for any of the "microphone wiring standards"
described in the KSB2 manual can be accomplished in a few seconds after
removing the K2's left side panel.

For technical details including a User's Guide, preliminary assembly and
installation instructions, and some 1,000 DPI CAD renderings, please see
http://www.unpcbs.com/micpcb/.  (The User's Guide includes a growing list of
Frequently Asked Questions.)

We've not yet determined the cost to produce this kit so we can only guess
as to what the retail price will be.  In addition, volume will be a
contributing factor affecting the price since there are fixed costs
associated with PCB production.

Presently we just need to know if there's a sufficient demand for this
accessory to warrant producing it.  If you are interested, please indicate
so by voting in our latest unpcbs Yahoo Group poll at
http://groups.yahoo.com/group/unpcbs/.  (You will need to join the group to
register your vote.)

This is still very much a work in progress so we welcome your comments,
suggestions, and criticisms.  Thank you for your interest.  We will keep you
posted in the coming weeks as to the fate of this product.

73,
Ken, WB2ART, K2 #769 & #5048
Gary, KI4GGX, K2 #4067

Rework Eliminator, Rework Eliminators, and unpcbs are trademarks of Ken
Kaplan and Gary Hvizdak.
Copyright 2007 by Ken Kaplan WB2ART and Gary Hvizdak KI4GGX, all rights
reserved.

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[Gary Hvizdak]

Hi Bill,

    Thanks for reply.  If you would join our unpcbs Yahoo group (as
described in my recent post) then you can "register" your interest there
using a voting poll.  It allows you to indicate how much you would be
willing to pay.  We need this information so that we can determine if
there’s sufficient demand.

    Further, as a member of our Yahoo group, you'll receive all messages
posted to the group.  Don't worry about getting lots of mail though because
only Ken and I can post messages, and we typically only post a few times per
year.

73,
Gary, KI4GGX
K2 #4067


From: [hidden email] [mailto:[hidden email]]
Sent: Sunday 6 May 2007 1859
To: [hidden email]
Subject: (no subject)

I am interested in two of the rework eliminators for my two K2/100s if you
decide to produce them.
 
Bill - K2TT
[hidden email]

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[Dave, G4AON]

Shouldn't Elecraft decide on a standard microphone connection and stick
with it? I suspect they probably have as the K3 appears to be "Kenwood 8
pin" with no alternatives, if I remember correctly an earlier post from
Eric.

If anyone building their K2 wishes to use a Kenwood microphone, then
computer 2 pin "jumper" connections link the adjacent pins which avoids
soldering wires on the pins.

Here in the UK, Waters and Stanton (http://www.wsplc.com/) list the
Kenwood MC-43S fist microphone at 19.95 GBP, which appears to be very
good value. I use one on my K2 and it works fine.

73 Dave, G4AON
K1, K2 and K3 on order.
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[Gary Hvizdak]

On Mon, 07 May 2007 Dave (G4AON) wrote ...

Shouldn't Elecraft decide on a standard microphone connection and stick with
it?  I suspect they probably have ... use a Kenwood microphone, then ...
"jumper" ... the adjacent pins which avoids soldering ... on the pins. ...
the Kenwood MC-43S ... appears to be very good value.

--

Dave,

    Are you suggesting that the required "rewiring" for all other
microphones be done external to the K2?

Gary

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[Don Wilhelm-3]

Dave,

Lyle confirmed that the mic jack in the K3 is wired for Elecraft - just
like the K2 with all pins of the mic configuration header plugged
straight across.

That wiring is not for all Kenwood mics. Kenwood mics with an internal
preamp expect to have voltage on pin 5, and the Elecraft has voltage on
pin 6, but all Kenwood mics without an internal preamp (not connecting
to a voltage pin) will work.

Elecraft is again offering the MH2 mic with the advent of the K3 to
address the need for an Elecraft mic.

73,
Don W3FPR

Dave G4AON wrote:

> Shouldn't Elecraft decide on a standard microphone connection and stick
> with it? I suspect they probably have as the K3 appears to be "Kenwood 8
> pin" with no alternatives, if I remember correctly an earlier post from
> Eric.
>
> If anyone building their K2 wishes to use a Kenwood microphone, then
> computer 2 pin "jumper" connections link the adjacent pins which avoids
> soldering wires on the pins.
>
> Here in the UK, Waters and Stanton (http://www.wsplc.com/) list the
> Kenwood MC-43S fist microphone at 19.95 GBP, which appears to be very
> good value. I use one on my K2 and it works fine.
>
> 73 Dave, G4AON
> K1, K2 and K3 on order.
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
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> Elecraft web page: http://www.elecraft.com
>
>

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[Don Wilhelm-3]

Gary,

Yes, the K3 does not have a mic configuration header like the K2.  The
mic jack is wired for the Elecraft pinout (per Lyle Johnson) and those
wanting to use a mic with a different wiring scheme will either have to
re-wire the mic plug or use some sort of adapter.

It certain eliminates much of the confusion indicated by the many
questions of "How do I use my XYZ mic with my K2"  The answer to that
now is the same as for any other transceiver - re-wire the mic plug to
the Elecraft pinout, and it will work for the K3 or the K2 with all mic
headers jumpered straight across.

73,
Don W3FPR

Gary Hvizdak wrote:

> On Mon, 07 May 2007 Dave (G4AON) wrote ...
>
> Shouldn't Elecraft decide on a standard microphone connection and stick with
> it?  I suspect they probably have ... use a Kenwood microphone, then ...
> "jumper" ... the adjacent pins which avoids soldering ... on the pins. ...
> the Kenwood MC-43S ... appears to be very good value.
>
> --
>
> Dave,
>
>     Are you suggesting that the required "rewiring" for all other
> microphones be done external to the K2?
>
> Gary

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[Greg - AB7R]

Shouldn't Elecraft decide on a standard microphone
>connection and stick with it?


Dave,

They did.  It's the same default mic configuration as the
K2, which happens to be the same as Kenwood.

73 and Tnx
Greg
AB7R








On Mon, 07 May 2007 07:32:16 +0100
  Dave G4AON <[hidden email]> wrote:

> Shouldn't Elecraft decide on a standard microphone
>connection and stick with it? I suspect they probably
>have as the K3 appears to be "Kenwood 8 pin" with no
>alternatives, if I remember correctly an earlier post
>from Eric.
>
> If anyone building their K2 wishes to use a Kenwood
>microphone, then computer 2 pin "jumper" connections link
>the adjacent pins which avoids soldering wires on the
>pins.
>
> Here in the UK, Waters and Stanton
>(http://www.wsplc.com/) list the Kenwood MC-43S fist
>microphone at 19.95 GBP, which appears to be very good
>value. I use one on my K2 and it works fine.
>
> 73 Dave, G4AON
> K1, K2 and K3 on order.
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft   
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

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