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These all smell a little musty, maybe smoky. I haven't typed in all the Columns in each listing, all the small articles, or reviews without schematics. April, 120 pages, staples rusting, corners bumped, tears in mailing cover at staples * 40-Meter Receiver for Home Construction. A project for those wishing to build their own high-performance superhet-it features double conversion, all-variable-diode tuning, and digital frequency readout. M. A. Chapman * CW Operator's PAL. An accessory for CW operators that reduces difficulties with interference, noise, and fading. Carleton F. Maylott * Calculator-Aided Propagation Predictions. An automated approach to propagation predictions by using a programmable calculator and published ionospheric predictions. Henry G. Elwell * Deluxe Memory Keyer with 3072-Bit Capacity. A revision of the famous WB4VVF Accu-Memory, featuring improved automatic character spacing, six-message memory, and remote control. Robert C. Cheek * Active Bandpass Filter for RTTY. Construction details for an active bandpass filter which will help eliminate interference and provide improved RTTY copy. Nat Stinnette * New Audio Amplifier for the Drake R-4C. Suitable for direct substitution in all R-4C versions. J. Robert Sherwood * Weekender: Verti-Loop, a Folded Whip Antenna for VHF Mobile Operation. Herb Bresnick * The Jammer Problem: Some Interesting Solutions. The incidence of jammers is increasing-here's an interesting approach to the problem. Nuryev Sidelbandsk * Variable-Frequency Audio Filter. Lew Fitch * Split-Frequency Operation with the Drake R-4B Receiver and the TR-4 Transceiver. Modifications you can make to your Drake receiver and transceiver to enhance operating convenience and versatility. William P. Winter, Jr. * High-Performance 432-MHz Converter. Complete construction details for a 432-435 MHz receiving converter that is easy to build and tune up. C. H. Robinson * Digital Techniques: Flip-Flop Internal Structure. Leonard H. Anderson (1979 apr amateur ham radio magazine shortwave technical was posted and is owned by: Jack Mason) |
jack-mason@chicagopartsnetwork.com (Jack Mason) for more information.
