KPAK3AUX cable

[Alan. G4GNX]

Fred Cady’s book on the KPA500/KAT500 combination mentions that if you’re using two cables to connect the AUXBUS signals between a KPA500, KAT500 and K3, it’s possible to use a DE15HD cable as long as the other cable is a KPAK3AUX cable wired as per the diagram. In the UK DE15HD is a bit of an obscure description, but I take it to mean a VGA EXTENSION cable (NOT A std. VGA cable) which has a male connector on one end and a female connector on the other end. I presume that these EXTENSION cables are wired pin to pin i.e. 1 to 1, 2 to 2, 3 to 3 etc., Does anyone know if this is the case?

I realise that I would need a cable with all pins connected, then snip out the pins that should not be connected. I would happily buy another KPAK3AUX cable from Elecraft, but for an item which is readily available in the UK, it’s not really economical.

73,

Alan. G4GNX

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[Bob Wilson, N6TV]

I've tested many "VGA extension" cables that do not have all 15 pins wired,
or short several pins together as a common ground.  They work fine for VGA
monitors, but should never be connected to any Elecraft product except the
P3SVGA external monitor port.

Many VGA cables include connectors without pin 9, obvious by visual
inspection.   Thinner "monitor" cables with ferrite beads on both ends
usually do not have all 15 pins wired either.

DE15HD - DE is the shell size, 15 pins, HD means High Density (3 rows).

Search your favorite UK Supplier for Amphenol CS-DSDHD15MF0 (male to
female) or CS-DSDHD15MM0 (male to male).  These cables have all 15 pins
wired straight through.

73,
Bob, N6TV


On Mar 4, 2017 10:27 AM, "Alan. G4GNX" <[hidden email]> wrote:

> Fred Cady’s book on the KPA500/KAT500 combination mentions that if you’re
> using two cables to connect the AUXBUS signals between a KPA500, KAT500 and
> K3, it’s possible to use a DE15HD cable as long as the other cable is a
> KPAK3AUX cable wired as per the diagram. In the UK DE15HD is a bit of an
> obscure description, but I take it to mean a VGA EXTENSION cable (NOT A
> std. VGA cable) which has a male connector on one end and a female
> connector on the other end. I presume that these EXTENSION cables are wired
> pin to pin i.e. 1 to 1, 2 to 2, 3 to 3 etc., Does anyone know if this is
> the case?
>
> I realise that I would need a cable with all pins connected, then snip out
> the pins that should not be connected. I would happily buy another KPAK3AUX
> cable from Elecraft, but for an item which is readily available in the UK,
> it’s not really economical.
>
> 73,
>
> Alan. G4GNX
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]

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[Alan. G4GNX]

Thanks for the info Bob. I delayed  replying until I’d tested out a cheap cable assembly, which turns out to be as you state, cross wired and some pins connected to shield. All 15 pins are connected, but I’ll only now use it as VGA extension.

I found the Amphenol CS-DSDHD15MF0 and Dig-Key sell them in the UK, also Mouser, so I’ve ordered a new cable from Digi-Key.

The Elecraft distributors in the UK have the KPAK3AUX kit, but they won’t sell just the cable on its own, so you end up paying for parts you don’t need.

73,

Alan. G4GNX



From: Bob Wilson, N6TV
Sent: Saturday, March 4, 2017 9:45 PM
To: Alan. G4GNX ; Elecraft Reflector
Subject: Re: [Elecraft] KPAK3AUX cable

I've tested many "VGA extension" cables that do not have all 15 pins wired, or short several pins together as a common ground.  They work fine for VGA monitors, but should never be connected to any Elecraft product except the P3SVGA external monitor port.

Many VGA cables include connectors without pin 9, obvious by visual inspection.   Thinner "monitor" cables with ferrite beads on both ends usually do not have all 15 pins wired either.

DE15HD - DE is the shell size, 15 pins, HD means High Density (3 rows).

Search your favorite UK Supplier for Amphenol CS-DSDHD15MF0 (male to female) or CS-DSDHD15MM0 (male to male).  These cables have all 15 pins wired straight through.


73,

Bob, N6TV
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