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Summary: Information film focusing on how to use radio aerials. Film produced in conjuction with the Indian Army.
Description: Reel 1: Incompetent Indian Army signaller "Bharkadali" having trouble with his Wireless Set – narrator suggests he needs to erect bigger aerial. This he does and gets a signal. Group of Indian Signal Corps soldiers undergoing classroom training about the principles of radio signalling. Importance of positioning transmitters for best operation and “ground waves”. “Sky waves” as an alternative to “ground waves” covered. “Skip distance” explained. Charts exist to predict best transmitting frequencies. Selecting right aerial for conditions.
Reel 2: Ground wave aerial types discussed, Rod, Wire etc. Ground aerials described – benefits and shortcomings. “The Following day Havildar Ghulamali is going round his group” - Havildar/Sergeant visits signaller – his set is working correctly but “Bharkadali” isn't responding. Arrives at “Bharkadali's” location to find him doing everything wrong. After further instruction he sets up correctly.
Reel 3: Skywave aerial types explained – e.g. Dipole, Wyndom, End Fed – formula to determine length of aerial e.g. 467/freq (Mc/S).