There used to be a very useful website that had all of the details for the different Icom CI-V radios, but it went offline a while ago (or at least the most useful portion of it did). I have a local copy, and it includes the following remark in relation to reading / writing memories:

"The data layout is specific to the IC-746. The IC-7400 (IC-746Pro) uses a different memory layout."

That means you won't be able to program the IC-746 Pro with Chirp until the CI-V driver is updated to add support for that radio.

Martin.

KD6YAM

On Fri, Feb 23, 2024 at 10:04 AM Eric Poole <wa1rkt@gmail.com> wrote:

Good afternoon all, from a new Chirp user.

Is there a difference between the Icom IC-746 and IC-746Pro in the way
it communicates from the Remote port?

I downloaded and installed Chirp and tried to connect to my IC-746Pro
using the Chirp IC-746 configuration, and could not connect.

Tried the same thing with my IC-7300 (using the Chirp IC-7300
configuration) and it connected and programmed the memories just fine,
so the cable and the computer's USB port are working as they should.

I did verify that CI-V is turned on in the radio and the address is set
to 0x66. (Speaking of which, how do I set the address in Chirp? Maybe
that's the problem...)

Thanks...

Rick WA1RKT
Londonderry, NH
Catch me on 14.300 MHz Intercon / MMSN most days

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