![]() ![]() Two data sheets for these units have also been added, one form 1970 and one from 1973. This article can be found via the Collector's Corner or on the WJ & CEI Document Index pageĪpA complete manual has been added for the DMS-107 and DMS-107A Signal Processors which tune 0.1 to 10 MHz in one band and demodulate AM, FM & CW with 8 different bandwidths. If you are troubleshooting the front panel for one of these fine radios, you'll want to read this article even if you don't built a complete tester. MaA custom made handy front panel tester for the Watkins-Johnson Microprocessor Front Panel (MFP) of the WJ-8718/MFP and WJ-8716/MFP HF receivers. This fascinating article can be found via the Collector's Corner or on the WJ & CEI Document Index page Also included are comparison and information on the no front panel versions of both lines, the WJ-8712 and the RX-331. MaPaolo Viappiani with an interesting comparison and the competitive history of the venerable and popular Watkins-Johnson WJ-8711 and Ten-Tec RX-340. These manuals can be downloaded from the WJ & CEI Document Index page Some hobbyists stick a preamp in front of them and tune them to six different SSB HF frequencies they like to monitor. The WJ-9518 was one of the first digitally tunable FDM demods. Watkins-Johnson made a wide array of equipment for demultiplexer FDM stacked telephone calls. This is one public window to my ongoing research into Watkins-Johnson andĬommunication Electronics, Inc and the history ofĪnd surveillance equipment manufacturers (COMINT, SIGINT and ELINT).įor other companies please see my Black Radios website. ![]() Visit the BlackRadios Facebook page for discussions and sharing information (Articles by collectors on how-to, repairs and projects) ![]()
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