Andy has been under the weather with the flu I believe.
oft: I use Trunk88 on VIPER daily (in fact I used it earlier this afternoon).
Few things to check out:
1) Make sure your computer "sees" the cable as a comport.
I don't know what version of Windows you are using but you need to make sure
the computer sees the cable and has assigned it a com port.
2) Once you know what Comport your cable has you need to open "TRUNK88.CTL" in notepad and look for the line "CC Data Serial Port =". Add your comport number to the end of that line and select File->save so that it looks something like this:
3) On your 396XT navigate to Menu->settings->Set C-CH Output->Set the output to "On" and
NOT Extend.
3) On your 396XT you must have the local VIPER Control Channel programmed into a system and unlocked. Program the local VIPER CC into a system then "hold" on the CC. You should see the Site info alternate on the top line if you are in the right spot.
You may wish to turn the volume down so you don't have to hear the CC data noise.
4) Double click on the T88.exe and the Program should start to pickup the data coming from the 396XT and show you the activity on the local site:
Marshall KE4ZNR