In new condition tube signal generator. Only power lamp goes on. Rest is not tested. With manual and crystals and probes. This is a diagram of a commercial sweep generator used in the 1970s for tuning resonant circuits, especially television FIs of the time. The circuit generates a signal that continuously scans a frequency range, thus enabling the survey of its response curve and the precise adjustment of its performance. Valves / Tubes 12AX7 6CB6 12B4A 12AX7 6BY8 6BQ7A 6X4 Power type and voltage Alternating Current supply (AC) / 117 Volt Material Metal Model: Sweep Generator G32 - PACO Electronics Co., Inc.; Shape Tablemodel, with any shape - general. Dimensions (WHD) 13 x 10.5 x 7 inch / 330 x 267 x 178 mm Notes TV-FM sweep generator 5 Freq. ranges: 3-7 Mc/ 6-14 Mc/ 13-33 Mc/ 35-85 Mc/ 80-213 Mc/ Also sold in Great Britain by K. L. B. Electric Ltd. in 1964