Surf these sites: Almost All Digital Electronics -- Manufactures hobby kits, assembled units, and software for electronics hobbyists, engineers and radio amateurs. Products include the DFD series of inexpensive add-on digital displays for analog receivers. Electronic Rainbow -- Manufactures electronic kits for the hobbyist, education, industry, detective operations, and law enforcement. Harry''s Homebrew Homepage -- Good homebrew coverage and links. Many mirror sites available. International Radio -- Crystal IF radio filters, performance enhancements for Kenwood, Yaesu, and Icom ham and shortwave radio products. JPS Communications, Inc. -- Since 1988 JPS Communications has been a manufacturer of Land Mobile Radio communications enhancement equipment, Government/Commercial communications equipment, and Amateur Radio Equipment. MFJ -- Accessories Quantics W9GR Digital Signal Processors -- A DSP unit connected between radio and speaker, supplied as a kit, it uses advanced algorithms to remove noise and other unwanted interference from voice and data communications signals. Ramsey Electronics -- Manufacturer of sub-miniature video cameras, transmitters, systems, hobby kits, pager test equipment and pager training schools Wireless video headquarters, hobby kits, test equipment and pager schools Sherwood Engineering Inc. -- Manufactures the SE-3 MK III Synchronous Detector and custom I.F. filter enhancements for most communications receivers. WD8DAS Sync Page -- Offers information about synchronous detection and retrofit synchronous detectors in kit and finished form.
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