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RE: [KAT5] USB signal over Cat 5

  • Subject: RE: [KAT5] USB signal over Cat 5
  • From: "Keith Doxey" <kat5users@xxxxxxxxxxx>
  • Date: Mon, 26 Dec 2005 20:53:51 -0000

Hi Rob

> I am currently using 2 KAT5 modules to transmit A/V signal from my PC
> in the study to the TV in the living room.  This works a treat and I
> very pleased with the units.
> As an enhancement, I would like to use a remote trackball in the
> room to control the PC.  The remote trackball recevier normally plugs
> into the PC via a USB socket, but the receiver needs to be in the
> living room, as the signal will not go from the living room to the
> study direct.
> So, in the same way that it is possible to send an IR signal over the
> KAT5 units, is it possible to do the same with USB? Or, will the USB
> signal go directly down a Cat 5 cable with no amplification; if so,
> where can I get an adapter?

Cant be done over KAT5 I'm afraid. USB is a two way communication at very
high data rates and there is no easy way to separate the send and receive
data in order to send it over KAT5's data channels.

I have successfully used an IR Keyboard/Mouse over KAT5 IR but most seem to
be Bluetooth or other RF these days.

There are USB-CAT5-USB extenders available for about 30 but I dont have
personal experience of them.

If you have a spare USB cable and a spare patch cord then you could chop
them in half and make your own extender cable to test it out.

I would use the orange pair for the data pair as it has the highest twist
ratio. I would then use use the blue pair for 0V and the brown pair for

You dont give any indication of the distance you want to cover. You wont do
any physical damage by trying that method but how well it would operate I
dont know. It depends to a large extent on the speed of the USB. I would
imagine that a simple pointing device would be a low speed device so may
have a much better chance of working.

Hope that helps


BTW. The charge for support over Christmas Day/Boxing Day is tripled.
Unfortunately for me, I dont charge for support so 3 times nothing is still
free :-)

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