I hope this is the right place for this. So, I am having problems with HT1000 RSS. Shocking, I know. I have a customer who frequently brings me old Motorola radios, and I align them and program them to his system. Well, he just brought me some Visars and one will not program up. I was able to get one to program up running under NTDVM in Windows 2000 after several tries using a cheap ribless adaptor, by just adjusting the voltage to the ribless adaptor and retrying like 50 times. But since then, 0 communication from the RSS. I have tried DOSbox in Windows 11. DOS on a 1997 desktop. NTDVM in Windows 2000 in a 1997 desktop. DOSbox in a 1997 desktop. The computer has 2 serial ports, I have tried both. I have tried multiple ribless adaptors just to get any indication of attempted communication, but there is nothing. The computer above the recommended 50 MHz (something like 400 MHz Pentium 2, I don’t remember), but it runs all the other RSS I have ever thrown at it just fine in DOS, even some programs older than the HT1000 RSS. I believe it is a problem with poor coding (shocking)- the RSS immediately says communication failed without any communication indicators on the serial port adaptor/RIB lighting. The computer has 2 serial ports that work fine with all other RSS/CPS and I have tried both. To run RSS that fails to communicate in Windows’ DOS emulator I just boot into a Windows 98 setup CD’s DOS and put the RSS on a floppy disk. The problem is specific to the HT1000 RSS- it does not even attempt to communicate with the serial port, just immediately fails. Once again, this is not something that happens with any other old Motorola RSS I have. Any pointers? I have tried 2 versions of the RSS, one is the newest release to my knowledge. Thank you.