June issues, 1941-44 and Nov. issue, 1945, include a buyers' guide section.y A. T. Lloyd p 42 Acting as a long-range target acquisition system, the direction finder locates reentering satellite capsule within a 70-degree sector and from 50, 000 feet to sea level. ... Modifications to the tape drive mechanism reduce wow and flutter to below 0.1 percent. ... Measuring Human Work Performance, (2 pages) by J. Goidman and D. K. Ross p 196 Ultrasonics are used for time and ... Magnetization time is proportional to number of turns ELECTRONICS BUYERSa#39; GUIDE R99.