Modifications for the Icom IC-746

Picture(s) of Icom - IC-746

19-07-1998 IC-746 out of range TX/RX (1 Kbytes)
11-12-1999 IC-746 Modification (2 Kbytes)
25-10-2000 Extended RX/TX for IC-746 (0 Kbytes)
02-12-2000 Separating the Tx and Rx lines (1 Kbytes)
02-07-2001 Power mod for the IC-746 (0 Kbytes)
20-10-2001 Solutions for chip blowing with mPC (33 Kbytes)
13-01-2002 Monitor Audio Output Too Low (1 Kbytes)
25-01-2002 Schematic for ICOM CI-V Option

Schematic for ICOM CI-V Option
Author: Rick Pemble - pemble@ix.netcom.com.MODIFICATION.NET


This is a messge from usenet alt.ham-radio

There is the interface. This one shows a 5 radio hookup -- just use the one jack if that is all you want. The inductors are all RFI suppressors, you can skip them if you want (L1, L2, L3, L4, as well as C5). The important parts are the five 22uF electrolytics, the Max232 IC and the 7805 regulator.

Easy to build -- works fine.

cheers

Rick W4RP

Click to enlarge.

Tod J. Knapp wrote in message ...
>I'm looking to build a CI-V unit for my ICOM 746.	Although I'm not really
>looking forward to giving ICOM $100 (or more) for a computer to radio
>feature, I'd sure enjoy the experience building such a unit.
>
>CI-V allows your computer to communicate with your ICOM radio.
>
>Does such a WORKABLE schematic exist?	Has anyone tried it?
>
>Please advise...
>
>Tod N9ZWY