[Icom] IC-775DSP and CI-V Question

[Jim Bennett]

Larry,

You had said "...The CI-V interface only translates the RS-232 (+12/-12)
signals to/from a state (TTL) which is compatible with the Icom =
equipment."

I thought that software packages (such as CI-V Commander, MixW, =
WriteLOG,
etc.) passed hex/ASCII commands back and forth through this interface =
unit,
and the radio then responds to responds to a set of those commands. For
example, the MixW digital communications program says "What's the =
current
frequency?", the radio responds, and the program displays it on the =
screen.
Similarly, if the radio's mode switch is changed or the sub-vfo is =
turned
on, that info is passed back to the software, through the CI-V =
interface,
and the info is displayed on the screen. True, the interface is pretty =
much
a "passive" device here, but what I don't understand is why the radio
doesn't respond to the hex/ASCII command code to go to TRANSMIT. The =
manual
that comes with the '775 lists some command codes, and TX on/off isn't =
one
of them. That's why I'm wondering if, in fact, the '775 doesn't have the
smarts to know about TX on/off through the CI-V. Hmmm... maybe a good =
reason
to upgrade to a new rig... =3D)

Jim / W6JHB


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