[ICOM] ct17 and 706mkIIG

[Dave]

Unless there's an egregious defect in its design, an asynchronous serial
device using the start/stop protocol cannot work correctly with one stop bit
but fail with two; the second stop bit is indistinguishable from the line
being idle for one bit time after the first stop bit. When uncertain, always
start with 2 stop bits; after things are working, one can then determine
whether the device can handle just 1.

You are correct that the CT-17 is just a level converter. However, many
third-party implementations are powered from one or both of the two incoming
modem control signals (RTS or DTR), requiring the transceiver control
software to assert them. The CT-17 is independently powered, so this is not
required.

    73,

       Dave, AA6YQ

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Ed K1EP
Sent: Thursday, December 15, 2005 18:26 PM
To: ICOM Reflector
Subject: RE: [ICOM] ct17 and 706mkIIG


At 12/15/2005 04:48 PM, you wrote:
>Paying attention to the title of your email message, I see that you are 
>running a 706mkIIG, for which the hexadecimal CI-V address is indeed 
>58. Verify that your transceiver control software is not expecting a 
>decimal value, which would be 88.
>
>If that's not it, verify that the serial port parameters are set to 
>8-bit words, no parity, and 2 stop bits.

Set it to 1 stop bit.  Only Yaesu requires 2 stop bits.  If you set it to 2,
under some circumstances you will lose data or radio control.  YMMV.

The author didn't mention what software he was trying to use.  Be aware that
the three models of 706 all have different addresses and the same address on
the radio and the software is necessary.  That is the feature of the CI-V
bus, it allows many devices to talk to each other.  If your software just
says 706, it may just mean the original.  The address on most late model
Icoms is programmable, if you need to change it.  The actual address means
nothing, it's just that the canned software assumes the default for a
particular radio, when in fact you can set it to virtually anything except
the address that the software uses.

>The CT-17 CI-V interface is independently
>powered, so there's no need to assert a modem control signal for its 
>benefit. Correct cable connectivity would be the next thing to check.

The CT-17 is just a level converter, there is nothing to program or talk to,
it is the software on the computer that talks to the radio, so most of the
configuration is on one of those two.


>   73,
>
>       Dave, AA6YQ
>
>-----Original Message-----
>From: icom-bounces at mailman.qth.net 
>[mailto:icom-bounces at mailman.qth.net] On Behalf Of Dave
>Sent: Thursday, December 15, 2005 16:15 PM
>To: 'ICOM Reflector'
>Subject: RE: [ICOM] ct17 and 706mkIIG
>
>
>The 706 CI-V address is 48 (hexadecimal), which is 72 (decimal). I 
>don't know whether your transceiver control software wants the address 
>specified in hexadecimal or decimal, but 58 is wrong is either case.
>
>   73,
>
>       Dave, AA6YQ
>
>-----Original Message-----
>From: icom-bounces at mailman.qth.net 
>[mailto:icom-bounces at mailman.qth.net] On Behalf Of Gordon Bostrom
>Sent: Thursday, December 15, 2005 15:59 PM
>To: ICOM Reflector
>Subject: [ICOM] ct17 and 706mkIIG
>
>
>Have been trying to get the CT17 and my 706 to talk to each other but 
>no success, have the baud rate at 19200, addee 58, port as com1,went 
>into the radio menu and set it according to the manual, been tearing my 
>hair out trying to get it to work, running out of hair , can anyone 
>help , if you had this problem what did you do to correct it
>
>any help is apprecaited
>
>Gordon W4KYW
>
>
>Forget about yesterday dont worry about tomorrow live for today
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>
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