QRP

摘要

Doug deMaw, W1FB, was one of the founding fathers of QRP radio construction. His series of articles, written for QST in the 1970s, launched a whole genre of amateur radio magazine articles on building simple QRP amateur radio equipment which has lasted until the present day. Although later articles using more up-to-date devices and techniques have superseded them, some of the 30-year-old projects are still being built. In honourof his contribution to the hobby, the Northern California QRP Club (NORCAL) has produced updates of two of his classicarticles, complete with kits of parts. These articles are the Tuna Tin 2 transmitter and the Herring Aid receiver. The Tuna Tin 2 transmitter first appeared as the coverfea-ture article for QST in May 1976. The cover picture was a cat looking longingly at a tin of tuna, but the lid (and contents!) had been removed and replaced with a printed circuit board bearing a QRP transmitter. The Herring Aid receiver was a similar concept. In this case, a direct-conversion receiver builton a printed circuit board replaced the lid of a tin of herrings. The novelty and efficacy of the designs appealed to many radio amateurs and hundreds of them were built.