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[K2] DE9 versus DB9, and how I can make a replacement cable

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John Shadle

[K2] DE9 versus DB9, and how I can make a replacement cable

Hi,
I completed the K2 and KAT100/KPA100 (in an EC2) project. Everything
is playing well together, but there are some "cable issues" I'd like
to resolve in order to make it less messy when I bring the radio out
of the closet to operate.

First of all, I plan on making a short (~4") jumper, which is required
between the KPA100 and KAT100.

Secondly, I'd like to construct a single connection between the main
rig and the autotuner/amp.

I already have the long Y cable built, but won't always be using
computer control. Is it possible to get the DE9 shell, connectors, and
the shielded wire from another source? Can I use DB9 connectors, or
are they totally different from DE9's? I feel like this has been
hashed out in the past (and perhaps in a manual), but I can't seem to
find it.

If it's just a matter of ordering a replacement cable and connectors
from Elecraft, then fine; however, if I can pick up these parts
locally (or through Mouser, Digikey, etc.) then I may opt for that.

Thanks for your assistance in advance.
-john W4PAH
K2 #5684
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Don Wilhelm-4

Re: [K2] DE9 versus DB9, and how I can make a replacement cable

John,

I believe you have the KAT100-2, so you plug the KPA100 ribbon cable
into the KAT100. That makes the connection for all signals that appear
on the external cable. You only need one cable from the KIO2 - and it
plugs into either the AUX I/O on the KAT100 or the KPA100, no need for
both. You should not have to construct anything other than what you
already have.

Externally, the only connection between the KPA100 and the KAT100 is a
short piece of coax and there should never be a need to remove it.

Technically, the 9 pin D-sub connector is the DE-9, but is often
mis-named as a DB-9.

73,
Don W3FPR

On 10/28/2010 9:25 AM, John Shadle wrote:

> Hi,
> I completed the K2 and KAT100/KPA100 (in an EC2) project. Everything
> is playing well together, but there are some "cable issues" I'd like
> to resolve in order to make it less messy when I bring the radio out
> of the closet to operate.
>
> First of all, I plan on making a short (~4") jumper, which is required
> between the KPA100 and KAT100.
>
> Secondly, I'd like to construct a single connection between the main
> rig and the autotuner/amp.
>
> I already have the long Y cable built, but won't always be using
> computer control. Is it possible to get the DE9 shell, connectors, and
> the shielded wire from another source? Can I use DB9 connectors, or
> are they totally different from DE9's? I feel like this has been
> hashed out in the past (and perhaps in a manual), but I can't seem to
> find it.
>
> If it's just a matter of ordering a replacement cable and connectors
> from Elecraft, then fine; however, if I can pick up these parts
> locally (or through Mouser, Digikey, etc.) then I may opt for that.
>
> Thanks for your assistance in advance.
> -john W4PAH
> K2 #5684
> ______________________________________________________________
> 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
>

______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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John Shadle

Re: [K2] DE9 versus DB9, and how I can make a replacement cable

Right, Don. That's what I'm trying to replace is the cable from the
KIO2 to the KPA100 (or KAT100). I have the Y cable constructed (PC -->
K2 --> tuner/amp) but would like to make just a simple cable for when
I don't need the computer control (e.g., K2 --> tuner/amp) and don't
want all of that extra wire hanging around. Just looking to figure out
where to get replacement parts.

I suppose the DB-9 would be a find replacement. I looked at DigiKey a
few minutes ago and they have those as well as backshell assemblies.
The four-conductor cable only comes in rolls, as far as I can tell, so
I might just steal a short length from the Y cable I already made.

-john

On Thu, Oct 28, 2010 at 9:49 AM, Don Wilhelm <[hidden email]> wrote:

> John,
>
> I believe you have the KAT100-2, so you plug the KPA100 ribbon cable into
> the KAT100. That makes the connection for all signals that appear on the
> external cable. You only need one cable from the KIO2 - and it plugs into
> either the AUX I/O on the KAT100 or the KPA100, no need for both. You
> should not have to construct anything other than what you already have.
>
> Externally, the only connection between the KPA100 and the KAT100 is a short
> piece of coax and there should never be a need to remove it.
>
> Technically, the 9 pin D-sub connector is the DE-9, but is often mis-named
> as a DB-9.
>
> 73,
> Don W3FPR
>
> On 10/28/2010 9:25 AM, John Shadle wrote:
>>
>> Hi,
>> I completed the K2 and KAT100/KPA100 (in an EC2) project. Everything
>> is playing well together, but there are some "cable issues" I'd like
>> to resolve in order to make it less messy when I bring the radio out
>> of the closet to operate.
>>
>> First of all, I plan on making a short (~4") jumper, which is required
>> between the KPA100 and KAT100.
>>
>> Secondly, I'd like to construct a single connection between the main
>> rig and the autotuner/amp.
>>
>> I already have the long Y cable built, but won't always be using
>> computer control. Is it possible to get the DE9 shell, connectors, and
>> the shielded wire from another source? Can I use DB9 connectors, or
>> are they totally different from DE9's? I feel like this has been
>> hashed out in the past (and perhaps in a manual), but I can't seem to
>> find it.
>>
>> If it's just a matter of ordering a replacement cable and connectors
>> from Elecraft, then fine; however, if I can pick up these parts
>> locally (or through Mouser, Digikey, etc.) then I may opt for that.
>>
>> Thanks for your assistance in advance.
>> -john W4PAH
>> K2 #5684
>> ______________________________________________________________
>> 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
>>
>