The reason that theses rigs don't work for the "Twin" mode is that Yaesu started a new command set
for CAT starting with the FTdx-9000, then with the FT-2000, FT, 950, Ft-450 and FTdx-5000. The older
rigs use a completely different command set.
Here is my general CAT checklist. It was written for the TS-480, but can be adapted as needed. For rigs
using the "Twin" mode, you need to make some modifications, so contact me if this is the case.
CAT CHECKLIST
---------------------
USING A STANDARD SERIAL CABLE
============================
1) Change the CAT rate on the TS-480 to 4800 baud (menu 56). This rate keeps traffic over the internet to a minimum and faster is not necessary for CAT.
2) Change the COM2 serial settings of the radio-RRC to mode-4, 4800 baud, data bits 8, stop bits 1 and submit/apply changes.
3) Change the COM2 serial settings of the control-RRC to mode-4, 4800 baud, data bits 8, stop bits 1 and submit/apply changes.
4) Plug a serial cable in between your PC and the control-RRC COM2
5) Set your software to use the correct COM port on your PC at 4800-8-1-N
USING A USB CABLE
=================
1) Change the CAT rate on the TS-480 to 4800 baud (menu 56). This rate keeps traffic over the internet to a minimum and faster is not necessary for CAT.
2) Change the COM2 serial settings of the radio-RRC to mode-4, 4800 baud, data bits 8, stop bits 1 and submit/apply changes.
3) Install the Microbit Setup Manager if you already haven't. You don't need the program for this, but this installs the correct drivers on your PC.
4) Change the COM2 serial settings of the control-RRC to mode-4, 4800 baud, data bits 8, stop bits 1, "use USB Com Port as COM2" to "Yes" and submit/apply changes.
5) Plug a USB cable between your PC and control-RRC. Make sure you do NOT do his before step 3 above!
6) Find out the correct port in your Windows Device Manager to use by looking for the "Microbit RRC Virtual COM Port (COM2)"
7) Set your software to use the this COM port on your PC at 4800-8-1-N.
73,
Mitch DJ0QN / K7DX