A system for the transmission and reception of radioelectric waves with great precision of the calibration

摘要

580,529. Toothed gearing. SOC. FRANCAISE RADIO-ELECTRIQUE. Aug. 26, 1942, No. 12049. Convention date, April 1, 1941. Addition to 580,528, [Group XL]. [Class 80 (i)] [Also in Groups XXXVIII and XL] Fig. 5 shows a wireless range setting switch operated by rotating handle 13C through a complete revolution for each frequency sub-range The switch comprises five spindles each geared 'to the next by a Maltese Cross gear 135, 136 such that one revolution of one spindle drives the next spindle through one third of a revolution.