Heinl radio business letter (July-Dec 1930)

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Electricity, City and County of San Francisco; Heintz and Kaufman, Ltd. : Lockhead Vega Plane, Serial #155, British Registration G-ABGF, license 8650 kc. , 50 watts; W6XJ and WSXF, Portable within State of California, renewal of licenses, experimental purposes; Mackay Radio and Telegraph Co. : Palo Alto, Cal., license for experimental service 27800 and 30200 kce , 5 KW; at Sayville, R. Y. , modification of license for additional points of communication; RCA Communications. Inc. , Bolinas, Cal. , modification of license to cover C. p. and additional points of communication, 11950 kc. , 80 KW; Colonial Air Transport . Inc. : modification of four licenses for change in frequencies; KGER, Gulf Production Co., Portable, mainly in SW U. S. , renewal of license for geophysical exploration purposes only; DeForest Radio Co. , Passaic, R. J. , renewal of license for experimental sound transmission in con¬ nection with experimental visual broadcasting; Geophysical Research Corp. , Portables in Zones 3, 4, 5, renewal of 13 licenses to be used in geophysical exploration work. Also, W9XX, Rev. Lannie W. Stewart, Carterville, ho. , renewal of license 1604 kc. , 100 w. ; W2XL, Rational Broadcasting Co. , Inc. , Bound Brook, N. J. , renewal of license, 1604, 23S8, 3256, 4795, 6425, 8650, 12850, 17300 kc. , 20 KW; W1XAI, Trustees of Tufts College, Portable, renewal of license; W8XP, Westinghouse Electric & Manufactur¬ ing Co., E. Pittsburgh, Pa., and W9XY, Chicago, Ill., renewal of licenses; Globe Wireless. Ltd„ : WSXAJ. Portable, initial location, Cypress, Cal., renewal of license; W7XAC , Edmonds , "/ash., and W7XA, Portable, Portland, Oregon, renewal of licenses; Chicago Daily News. Inc. : W9XAL, Addison, Twp. , Ill. , and Plane RR855-E, renewal of licenses; 171 XQ, . Weslayean University, Dept, of Physics, Middletown, Conn. , renewal of license; 7/1 XV. and W1XAN, Round Hills Radio Corp. , Souoh Dartmouth, Mass., renewal of licenses; 179 XV. Ozark, Radio Corp. Carterville, Mo. , renewal of license; 119X0. Morkrum Kleinschmidt Corp. , Chicago, Ill. , renewal of license; IV 3X17, Aircraft Radio Corp. , Boonton, R. J. ; 176XV. Federal Telegraph Co., Palo Alto, Cal., XGJZ, 17ireless Service Corp. , Portable Texas, La. , and Okla. ; 7/2XAR Radio Pictures, Inc. , Long Island City, IT. Y. all renewal of licenses. Also, 17TAX, Inc., Springfield, Ill., C. p. to move transmitter to another room in same building; KWKH, Hello World Broadcasting Corp., Shreveport, La. , C, P. to make changes in equipment decreasing max. power of equipment from 20 K1Y to 10 KT7; 171 BX, WIBX, Inc. , Utica, R. Y. , C. ?. to make changes in equipment for modern installation including automatic frequency control; KTSA , Lone Star Broadcast Co. , Inc. , San Antonio, Texas, C. p„ to install new equipment decreasing max. power of equipment from 10 to 5 KW; KTSL., C-. A. Houseman, Shreveport, La. ; C. . P. to change equipment increasing maximum power of equipment from 75 to 100 watts; KFT,Ub . Los Angeles Broadcasting Co. , Culver City, Cal. , C. P. to change equipment increasing maximum pox^er of equipment to 500 watts; WSH, Hampton Roads Broadcasting Corp. , Newport News, Va. , C. P. to move transmitter locally in same building, install new equipment including automatic frequency control and 100$. modula¬ tion; WHA, University of Wisconsin, Madison, Wis. , C. P. to make changes in equipment; KP0F, Pillar of Fire, Denver, Colo., C. P. to make changes in equipment with maximum power of 1 KW, including automatic frequency control; WEAR. Keystone Broadcasting Co. , Phila¬ delphia, Pa. , C. p. to install new equipment including automatic frequency control. 12