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Test Set I-148-A is a portable test instrument used in measuring the standing wave ratio of the rf voltage along a nonresonant transmission line. It may also be employed in checking the balance to ground of a parallel, two wire, open, nonresonant transmission line.


  • TM 11-1043, Test Equipment RC-70-( ). War Dept. Dec. 1943. 91 p. U408.3.A13 TM 11-1043 Dec. 1943
  • TO 16-40RC70-2;
  • Army Dwg ES-D-11133