KPA100

[Evert Bakker (PA2KW)]

Hello all,

 

Finally after 8 month I'm building the KPA100 module and hope to install
this option next weekend.

But when reading the manual on page 21 it is suggested to cut pin 4 of the
P4 connector (used for the ribbon cable) as to introduce some kind of a key.

Except if you expect to use this pin (8T 8-volt transmit) for any reason. I
can't figure out at this stage if I will need this "signal" for any kind of
homebrew option.

I hate cutting pins and find out next month that I shouldn't have done it.

 

Does anyone know about any kind of modification that might need this 8T
line?

 

Thanks in advance.

 

Evert, PA2KW

 

K2 : sn 4836

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[Don Brown-4]

Hi

The 8T signal is not used in any Elecraft option. It is unlikely you would
use it in a homebrew project as the 8R line is the inverse and allows an
adjustable delay for keying or relay switching. The key in the plug is much
more useful as it prevents you from installing the connector backwards
possibly damaging components on the K2 control board or KPA100. I do not cut
the pin off. I heat it on the back of the board and gently pull it out with
pliers after all the other pins are soldered. At least doing it this way
allows the pin to be reinserted if it should ever become necessary.

Don Brown
KD5NDB


----- Original Message -----
From: "Evert Bakker (PA2KW)" <[hidden email]>
To: "Elecraft e-mail reflector" <[hidden email]>
Sent: Thursday, December 29, 2005 2:45 PM
Subject: [Elecraft] KPA100

> Hello all,
>
>
>
> Finally after 8 month I'm building the KPA100 module and hope to install
> this option next weekend.
>
> But when reading the manual on page 21 it is suggested to cut pin 4 of the
> P4 connector (used for the ribbon cable) as to introduce some kind of a
> key.
>
> Except if you expect to use this pin (8T 8-volt transmit) for any reason.
> I
> can't figure out at this stage if I will need this "signal" for any kind
> of
> homebrew option.
>
> I hate cutting pins and find out next month that I shouldn't have done it.
>
>
>
> Does anyone know about any kind of modification that might need this 8T
> line?
>
>
>
> Thanks in advance.
>
>
>
> Evert, PA2KW
>
>
>
> K2 : sn 4836

_______________________________________________
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

[Evert Bakker (PA2KW)]

Hello Don,

Thanks for info and practical solution. I will do it right away. Thanks.
Whish you and all others a prosporous 2006.

Evert, PA2KW


-----Original Message-----
From: Don Brown [mailto:[hidden email]]
Sent: 29 December 2005 21:58
To: [hidden email]; Elecraft e-mail reflector
Subject: Re: [Elecraft] KPA100

Hi

The 8T signal is not used in any Elecraft option. It is unlikely you would
use it in a homebrew project as the 8R line is the inverse and allows an
adjustable delay for keying or relay switching. The key in the plug is much
more useful as it prevents you from installing the connector backwards
possibly damaging components on the K2 control board or KPA100. I do not cut

the pin off. I heat it on the back of the board and gently pull it out with
pliers after all the other pins are soldered. At least doing it this way
allows the pin to be reinserted if it should ever become necessary.

Don Brown
KD5NDB


----- Original Message -----
From: "Evert Bakker (PA2KW)" <[hidden email]>
To: "Elecraft e-mail reflector" <[hidden email]>
Sent: Thursday, December 29, 2005 2:45 PM
Subject: [Elecraft] KPA100

> Hello all,
>
>
>
> Finally after 8 month I'm building the KPA100 module and hope to install
> this option next weekend.
>
> But when reading the manual on page 21 it is suggested to cut pin 4 of the
> P4 connector (used for the ribbon cable) as to introduce some kind of a
> key.
>
> Except if you expect to use this pin (8T 8-volt transmit) for any reason.
> I
> can't figure out at this stage if I will need this "signal" for any kind
> of
> homebrew option.
>
> I hate cutting pins and find out next month that I shouldn't have done it.
>
>
>
> Does anyone know about any kind of modification that might need this 8T
> line?
>
>
>
> Thanks in advance.
>
>
>
> Evert, PA2KW
>
>
>
> K2 : sn 4836

_______________________________________________
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