TU-60

UNCLASSIFIED Tuning Unit TU-60 is a modification of a transmitter tuning unit, Tuning Unit TU-10-B, which converts Radio Transmitter BC-375 or Radio Transmitter BC-191 into a barrage jammer for use against enemy communications. In Radio Transmitter BC-375, it converts the oscillator and amplifier into a Hartley push-pull oscillator, which is frequency-modulated by a motor driven condenser.The unit operates over a frequency range of 15to 22 mc., with input power derived from Radio Transmitter BC-375. The power output of the transmitter with Tuning Unit TU-60 is 100 watts. There is me-chanical frequency modulation over a band of 3 mc.average width at a frequency rate of 200 c.p.s.Size of the unit is that of a standard tuning unitfor Radio Transmitter BC-375.No tube complement is required.