[Icom] CI-V Questions

[Roy Sakabu]

Another suggestion:
If you go to the trouble of putting it into a little box instead of =
hiding
it all inside the DB-9 hood, I personally would put a DB-9F socket on =
it and
wire up 4 1/8" mini phone jacks in parallel on the box.  That way, all =
you
need is a 9 pin serial cable to hook it to your computer and you can =
control
(and allow cross communications) between up to 4 C-IV rigs.

The C-IV interfaces in the radios are all open collector inputs with a =
pull
up resistor so that any listener can also be a talker on the same 2 =
wires.
I've used a mini plug Y-cable to successfully talk to both the IC-746 =
and
R-75 and letting each control the bus when manually spinning the dials.

73
Roy
AD6ZU

-----Original Message-----
From: JV
To: icom@mailman.qth.net
Sent: 5/30/02 12:45 PM
Subject: [Icom] CI-V Questions

Larry
         You are right about the DB-9 hood. It will fit into a DB-25
hood=20
but it is extremely tight. The others that I built were put on a 2 X 3
inch=20
piece of prep board and placed inside of a small clear plastic utility
box=20
that was purchased at Wally World. Much easier with which to work.
JV

At 10:14 AM 30-05-02 -0700, you wrote:
>I built the CI-V interface that Icom markets. I visited a dealer who=20
>allowed me to look at the manual & it took about a minute to copy it
onto=20
>a scrap of paper. Buying ALL new components, I duplicated the =
interface

>for $13. I don't think it would fit inside a DB-9 connector but it =
does

>work. I found the circuit to be, for all purposes, identical to the
ones=20
>Ive seen published. If you go to the ARRL web site, you can find the=20
>circuit there in one of its variations.
>
>73 - Larry W=D8NFU


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