Hi

I haven't connected the two unused wires in the cat-5 cable. They don't
seems to be creating any problem. Even if they act as a "antenna". I did
tonight connect the geophone to cat-5 cable that is screened, to prevent
noise from entering the system. That cable is ground connected trugh the
longer cable, that is connected to the ground trugh the amplifer board.
This isn't ground loop, so I don't expect any problems with it.

Since I did install cat-5 cable from the geophone (that is 2 meters
cable, with RCA connectors on it's end, the same goes for the 15 meter
cable.), the signal I am getting appears to be far better then I was
getting, despide it's lenght, that is total of 17 meters (55.7 feets). I
did even pickup mag 2.2 earthquake at distance of 64km and the signal
was clear and good.

Regards.
-- 
Jón Frímann
http://www.jonfr.com
http://www.simnet.is/jonfr500/earthquake/

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