DH 173Q1 BA Includes AlphaStation 200/166 - - Choose one. - BA model recommended 1-Mbyte (MSV11-QA) memory, for US. RD53 71-Mbyte disk drive, AlphaStation 200/166 controller, TK50 Base Hardware System includes 1 serial AlphaStation 200/166 tape drive and tape line for a console terminal, a BC22D-10 controller, DHV11, BA23 serial-line cable, and 8 modem/data serial pedestal/tabletop enclosure, lines (modem control) on the DHV11. AlphaStation 200/166cord, and RT-11, CTS-300, and MicroPower/ English-language documentation Pascal-RT are not supported on Standard and installation diagnostics, 120 V Systems due to lack of DHV11 support.