[ct-user] LPT pinout

Ed K1EP k1ep.list at gmail.com
Thu Jan 8 09:11:19 EST 2009

I don't know if a relay would fast enough to do CW keying.

I would use a high voltage transistor or opto isolator such as the 
H11G1 which has a 100V BVceo.  If that isn't high enough, there 
probably are others out there that are higher.

Pin 17 of LPT1 has the CW output, pins 18-25 are ground.

At 1/8/2009 05:27 AM, poldo wrote:
>I use CT 9.72
>For cw/keying my rig (negative grid block transmitter) via LPT port I need a
>5 Volt relay switched by CT
>Could someone provide me with a pinout for switch the relay ?
>CT-User mailing list
>CT-User at contesting.com
>CT on the web:  http://www.k1ea.com/

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