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These all smell a little musty or smoky. February, 96 pages, 6.5 by 9.5 inches, no mailing cover, staples are rusty, corners bumped, edges starting to brown * Dual-Band Stripline Amplifier/Tripler for 144 and 432 MHz. This state-of-the-art stripline amplifier provides an effective efficient way to get on two popular VHF bands. Richard T. Knadle, Jr., Airborne Instruments Laboratory * Phase-Modulated Transmitter for Two Meters. An interesting design featuring solid-state devices, narrow bandwidth, and low power consumption. Frank C. Jones * Survey of Solid-State Power Supplies. Regulated power is a must for today's new circuits-here's a report on some new devices and their applications. Hank Olson * Increasing the Reliability of Warning Lights. Equipment warning lights must be reliable-here's how to increase their life. F. J. Case * Build Your Own Tilt-Over Antenna Mast. Here's the answer to a structurally sound, low-cost mast using ordinary hand tools and readily available hardware. Sidney Wald * Different Approach to Amplitude Modulation. Expensive modulator components are eliminated in this design-modulation is provided by the RF amplifier power supply. Courtney Hall * Antenna Systems for 80 and 40 Meters. Some interesting ideas for efficient broadband antennas for the lower-frequency amateur bands. E. H. Conklin * Quick Band Change from Six to Two Meters. If you like to operate on both six and two meters, here's an equipment changeover scheme that is practically instantaneous. W. G. Eslick (please look at our rules and privacy policy) |
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