Two input center freq: 21.4 mhz, by placing front panel sweep width select switch in 2 mhz or 6 mhz position; 160.0 mhz, by placing front panel select switch in 20 mhz or 100 mhz position; oper power rqmts: 115 vac, 60 hz, single phase, 40 watts; 19 in. Lg, 19 in. W, 5.250 in. H; front panel controls and indicators: channel select; marker select; sweep width select; crt intensity control; focus control; illumination control