A KX3 Curiosity Question about ACC2 and RXIQ

[Phil Hystad-3]

On my KX3 the ACC2 and the RXIQ connectors are 2.5 mm rather than a more common 3.5 mm.  So, does anyone know why these are 2.5 mm rather than 3.5 mm.  I understand that they are smaller but looking at the KX3 and how and where they are located I do not see that smaller is required for the design.

Is there a good engineering design reason behind this decision?  I have no complaints but rather lots of curiosity.

73, phil, K7PEH

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[wb4jfi]

My guess would be that with different size connectors, it is harder to plug
the wrong thing into the wrong place.  This makes it less likely that you
will plug an ACC1 cable into the ACC2 jack by mistake, and less likely that
you would plug headphones into the RXIQ jack, for example.
73, Terry, WB4JFI


-----Original Message-----
From: Phil Hystad
Sent: Monday, March 18, 2013 12:19 AM
To: [hidden email] List
Subject: [Elecraft] A KX3 Curiosity Question about ACC2 and RXIQ

On my KX3 the ACC2 and the RXIQ connectors are 2.5 mm rather than a more
common 3.5 mm.  So, does anyone know why these are 2.5 mm rather than 3.5
mm.  I understand that they are smaller but looking at the KX3 and how and
where they are located I do not see that smaller is required for the design.

Is there a good engineering design reason behind this decision?  I have no
complaints but rather lots of curiosity.

73, phil, K7PEH

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[Phil Hystad-3]

Yes, I thought that might be a reason but you can still plug in the wrong plug.

73, phil, K7PEH

On Mar 17, 2013, at 9:29 PM, [hidden email] wrote:

> My guess would be that with different size connectors, it is harder to plug the wrong thing into the wrong place.  This makes it less likely that you will plug an ACC1 cable into the ACC2 jack by mistake, and less likely that you would plug headphones into the RXIQ jack, for example.
> 73, Terry, WB4JFI
>
>
> -----Original Message----- From: Phil Hystad
> Sent: Monday, March 18, 2013 12:19 AM
> To: [hidden email] List
> Subject: [Elecraft] A KX3 Curiosity Question about ACC2 and RXIQ
>
> On my KX3 the ACC2 and the RXIQ connectors are 2.5 mm rather than a more common 3.5 mm.  So, does anyone know why these are 2.5 mm rather than 3.5 mm.  I understand that they are smaller but looking at the KX3 and how and where they are located I do not see that smaller is required for the design.
>
> Is there a good engineering design reason behind this decision?  I have no complaints but rather lots of curiosity.
>
> 73, phil, K7PEH
>
> ______________________________________________________________
> 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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[David Pratt]

Perhaps a little common sense is required?

73 de David G4DMP

In a recent message, Phil Hystad <[hidden email]> writes

>Yes, I thought that might be a reason but you can still plug in the wrong plug.
>
>73, phil, K7PEH
>
>On Mar 17, 2013, at 9:29 PM, [hidden email] wrote:
>
>> My guess would be that with different size connectors, it is harder
>>to plug the wrong thing into the wrong place.  This makes it less
>>likely that you will plug an ACC1 cable into the ACC2 jack by mistake,
>>and less likely that you would plug headphones into the RXIQ jack, for
>>example.

--
 + - - - - - - - - - - - - - - - - +
 | David M Pratt, Kippax, Leeds.   |
 | Website: http://www.g4dmp.co.uk |
 + - - - - - - - - - - - - - - - - +

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[Jimk8mr]

I would suspect the ACC and RXIQ jacks are much less used than the larger  
KEY and PHONES jacks.
 
Speaking of jacks, I'd like to repeat publicly a request I've made through  
Elecraft channels:
 
That the CW KEY1 and CW KEY2 menus have an option for "NONE".
 
That way, a mono 3.5mm plug could be used to connect to an external key or  
keyer, by setting the Ring to NONE.
 
 
73   -  Jim  K8MR
 
 
 
 
In a message dated 3/18/2013 1:01:39 A.M. Eastern Daylight Time,  
[hidden email] writes:

Yes, I  thought that might be a reason but you can still plug in the wrong  
plug.

73, phil, K7PEH

On Mar 17, 2013, at 9:29 PM,  [hidden email] wrote:

> My guess would be that with different  size connectors, it is harder to
plug the wrong thing into the wrong  place.  This makes it less likely that
you will plug an ACC1 cable into  the ACC2 jack by mistake, and less likely
that you would plug headphones into  the RXIQ jack, for example.
> 73, Terry, WB4JFI
>
>  
> -----Original Message----- From: Phil Hystad
> Sent: Monday,  March 18, 2013 12:19 AM
> To: [hidden email] List
>  Subject: [Elecraft] A KX3 Curiosity Question about ACC2 and RXIQ
>  
> On my KX3 the ACC2 and the RXIQ connectors are 2.5 mm rather than a  more
common 3.5 mm.  So, does anyone know why these are 2.5 mm rather  than 3.5
mm.  I understand that they are smaller but looking at the KX3  and how and
where they are located I do not see that smaller is required for  the design.
>
> Is there a good engineering design reason behind  this decision?  I have
no complaints but rather lots of  curiosity.
>
> 73, phil, K7PEH
>  
>
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