Category Archives: shortwave

8 Band Superhet AM Receiver

Amplitude Modulation holds a fascination for me. It dates back to those hours spent as a teenager listening to the big broadcast-like amateur AM stations in the 1970s and 80s, on 160, 80 and 40 meters. Signals that seemed as wide and loud as medium wave commercial broadcast stations, bearing sonorous, paced voices that projected a wealth of wisdom and experience, and in many cases, a grandfatherly manner. Back then, AM was known as ‘The Gentleman’s Mode’.

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Home of the "Free Range 300 QRP Challenge"

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信号処理とラジオ

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Amateur Radio and unrelated technologies

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Projects for the radio draftsman. Hardware, software, electronics and test equipment for the radio designer

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Amateur Radio and Stuff