ICCIIV
                    Computer Control of ICOM Amateur Gear

                             Carl Clawson, N7KBV



                             General Description


              Several ICOM products feature a built-in computer
         interface connected to a 1/8" phone jack on the rear panel.
         However, ICOM gives no information about this interface in
         the instruction manuals that I've seen.  The information
         exists within ICOM, and my dealer managed to get it for me.

              This interface, called the "CI-V" by ICOM, is standard
         on the following models:  735, 761, 275, 375, 475, and
         R7000.  Earlier models used the CI-IV parallel interface,
         which can be connected to CI-V by ICOM's UX-14 converter.
         Models using the CI-IV are the 751, 271, 471, 1271, and R71.
         The information I got from ICOM was written with the 735 in
         mind, but a listing of a BASIC program to control the R7000
         was appended.  I believe it will help with the other models,
         too.  The control codes and data format should be the same
         for all of them.
CONTINUED IN FILE ICCIIV.7











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