Teletype 43

On 5/23/2017 1:07 AM, dave.g4ugm at gmail.com wrote: I had one (and used it), but not all null modem cables are evidently the same :-) I soldered up a loopback as you suggested, and the unit dropped into DATA MODE on startup. I then played with the signals. The unit really does want DCD to be active, as just doing CTS/RTS, DTR/DSR, and RX/TX did not do the trick. Evidently, my null modem cable I had tested with previously does not connect DCD. Swapped out for a null modem adapter (from our old now deceased friend Radio Shack) and the unit works with a new Dell M4800 laptop (so "newer" style +-10V RS232 levels must be OK. I appreciate the brain dusting. I should have known to try that, as I spent years doing serial stuff and wrote tcpser, the Hayes Modem emulator package for Linux/Windows. I even have a Telnet BBS cable named after me. Sigh... The printer ribbon has less life left in it than I anticipated, but a list member is helping me, so it should be good to go after a deep cleaning and a light oiling. I did notice the printhead starts to stutter at times on long lines, but I *think* it's a function of the damage to the ribbon, so we'll troubleshoot that only if it continues after ribbon fixes. The broomhandle looks to be working fine, but if there's a spare paper roll pin and/or a platen knob out there looking for a home, let me know. Jim