TS-3 TV Sweep Generator.

Fundamentals from 4 mHz to 220 mHz with output well over 100,000 microvolts.
Automatic blanking and wide-range phasing. Triple marker ranges from 19 mHz
to 180 mHz using a Colpitts oscillator plus the 4.5 mHz crystal-controlled
oscillator for check points. Provisions for external marker. Sweep system
uses the “Increductor” controllable inductor. Sweep width variable from 0 to
12 mHz at the lower RF frequencies, increasing to 0 to 50 mHz at the highest
frequencies. Regulted power supply, constant RF output level, independent
marker and RF output control circuits, low-impedance output and properly
terminated output cables.

Tubes:	12AX7
	12AT7
	6BQ7
	6CL6
	6X4

18 lbs.  
1953 price:  $44.50.