The Elco Model 360 Sweep Signal Generator cover8 all television and FM alignment frequencies between 500KC and 228MC. Extremely wide sweepwldth is available, variable fron 0 to 30 megacycles· Also Included is a crystal marker oscillator with variable amplitude control, for use with external crystals· Frequencies are directly calibrated in three bands 0-60, 0-120 and 168- 228· The FM and TV channels are marked directly on the front panel. Also available at the output is an internal oscillator with a frequency range of 54 to 114 MC. for use as a standard signal generator. A phasing control and RF output attenuator are also included together with provisions for external marker injection·