[ICOM] More thinking going on.

Mon Feb 14 10:47:59 EST 2005

I googled up my original post to rec.radio.amateur.homebrew. Here it is:

"Yaesu's ADMS-1D cable substitutes for ICOM CT-17 CI-V box

Local: Wed, Sep 12 2001 11:28 am
Subject: Yaesu's ADMS-1D cable substitutes for ICOM CT-17 CI-V box

I needed to control /read my new ICOM 756PRO from WriteLog, and have
been able to get the above cable working between the standard serial
port of my computer and the input jack on the radio by only adding a
Radio Shack 274-368 (1/8 inch stereo plug to 1/8 inch mono jack -
$1.99).

With the RS adapter plug, the cable functions as if it were the CT-17,
except that it only has one radio connector instead of the CT-17's 4.

Details: The ADMS-1D is a cheapie package (I paid $30 new 2 years ago)
from Yaesu which contains software for programming some of the Yaesu
radios (including my VX-1R) along with a cable to connect from the
computer to the radio. The main cable includes an extension/adapter
cable to allow the package to work with Yaesu radios having
4-conductor mini earphone/data sockets as well as 3 conductor ones. In
addition, the cable includes a bidirectional level translator inside
the DB-9 which converts to/from TTL levels.

Before trying with the radio, I plugged the cable into the serial port
and read the cable's signal levels with a VOM and determined that the
signal was on the center ring of the 3-pin plug and the common was on
the base, and also verified that the tip was not connected to
anything. Opening up the db-9 verifies that only two wires are used.

The Radio Shack adapter plug is intended to convert stereo phones to
mono by paralleling the ring and tip signals from the jack and
connecting them to the tip of the mono plug. Just what I needed to
"move" the signal to the tip of the adapter, where it plugs into the
756PRO.

It works, and there is no mod or change to the cable - I can still use
it when needed with the VX-1R radio just by unplugging the cable from
the RS adapter plug and inserting it into the 4-conductor
extension/adapter cable. Been going several days now with the 756PRO -
no problems.

Jerry W4UK "

It appears to me that all the external translators like the one I had and 
the w1gee one simply translate to/from TTL logic levels. So all we have to 
do to use radio A's cable on radio B is provide the proper plug tip. Of 
course, the proper software is also required.

  I might be wrong, so check it yourself.  BTW, mine is still going strong, 
and still thinks it is a CT-17jr. HA!

Jerry
=================================================

At 12:21 2/14/2005, Julio Peralta wrote:
>Do I understand there may be an off the shelf Radio Shack adaptor that will
>allow a CI-V clone like the W1GEE to program Icom radios similar to the
>IC-2720?
>
>If there is does anyone know the part number?
>
>Another question can the 2720 be programmed without the control head
>connected. My thought is it can't.
>
>Julio, W4HY
>
>----- Original Message -----
>From: "Jerry Flanders" <jeflanders at comcast.net>
>To: "ICOM Reflector" <icom at mailman.qth.net>
>Sent: Sunday, February 13, 2005 10:21 PM
>Subject: RE: [ICOM] More thinking going on.
>
>
> > I think the Radio Shack adapter plug already has the wiring you need. I
> > have a similar cable (for a Yaesu radio, but it looks like all these
> > converter cables are the same - my Yaesu cable works fine on my ICOM
> > radio), and I got my adapter plug at RS. Verify the wiring with a meter
> > when you get it all ready to plug up.
> >
> > I use this cable+plug regularly instead of the ICOM CT-17 for quite a
>while
> > now. I wrote this up a few years ago  - don't know if it is in the
>archives
> > still. Gave a reference there about just which model cable/plug  and where
> > to get all, I think.
> >
> > Jerry W4UK
> >
> > At 02:59 2/14/2005, Michael P. Olbrisch wrote:
> >
> >
> > > > -----Original Message-----
> > > > From: icom-bounces at mailman.qth.net
> > > > [mailto:icom-bounces at mailman.qth.net]On Behalf Of Gary Fiber
> > > > Sent: Monday, February 14, 2005 2:27 AM
> > > > To: ICOM Reflector
> > > > Subject: Re: [ICOM] More thinking going on.
> > > >
> > > >
> > > >
> > > > >So - Gary, Adam, Clif, and all you others.....
> > > > >
> > > > >A.  Will the OPC-478 act as a single-line CI-V?
> > > >
> > > > Yes but you will have to change the connector to a two
> > > > conductor. Hot to the tip. Ground to the sleeve.
> > >
> > >Heh heh heh -  You ARE the wizard Gary!!!
> > >
> > >It sounds to me like an adapter in the making.  The current plug on the
>end
> > >of the OPC-478 is a 3 terminal.  I can make an adapter for this, 3
>terminal
> > >to two terminal.  Which of the three goes where?  I would hazard a guess,
> > >sleeve to sleeve, tip to tip, and leave the ring open.  But that is only
>a
> > >guess.
> > >
> > >Hmmm - a thought.  Perhaps the OPC-478 only uses 2 terminals.  I have not
> > >looked.  YET.
> > >
> > > > >B.  What software will work best with the 706?  I have tried a few
> > > > >before, but with little satisfaction.
> > > >
> > > > I don't have a good answer for the software.
> > >
> > >I have been in contact with the maker of ICClone.  (Actually he contacted
> > >me).  Seems we are on to something.
> > >
> > >Thank you ever so much.  Even today, you are one of the reasons I still
>like
> > >ICOM so much.
> > >
> > >Mike.  KD9KC
> > >El Paso, TX.
> > >
> > >
> > >----
> > >Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> > >Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > >Icom FAQ: http://www.qsl.net/icom/
> >
> >
> > ----
> > Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> > Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > Icom FAQ: http://www.qsl.net/icom/
> >
>
>
>----
>Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>Icom Users Net: Sundays, 1700Z, 14.316 MHz
>Icom FAQ: http://www.qsl.net/icom/