[ct-user] Icom 751A Interface

Ron Stordahl Ron Stordahl" <ron.stordahl@digikey.com
Sun, 27 Sep 1998 12:51:19 -0500


There is a recommended circuit in the CT manual which explains exactly
how to do this.  Are you missing that info? 

However the LPT port is the prefered way.  This is because of the way
COMTSR works, it keys the rig solid, key down, until the program starts
and you send the first transmission.  Its in my opinion a serious error in
COMTSR, but apparently few agree with me.  Using LPT this problem 
does not occur.

Ron N5IN

-----Original Message-----
From: Anthony J. Cioffi -- ARS N2KI -- MARS NN0HIO-T <n2ki@amsat.org>
To: CT-USER@contesting.com <CT-USER@contesting.com>
Date: Sunday, September 27, 1998 11:00 AM
Subject: [ct-user] Icom 751A Interface

>    I am new to CT.  I am trying to interface my radio with CT.  I am
>not sure where to begin.  Currently I do have my Icom 751A interfaced
>with my comtuper via a comport.  I did try to see if CT would key the
>radio, but it did not.  I presume that I have to go directly to the key
>jack(?), which I have not tried yet because I don't know the proper pins
>use.  Can someone tell me how to properly use a COM port (not LPT) to
>interface CT to my radio?  Thanks much for you help.
>Tony -=- N2KI
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