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Homebrew is an amateur radio slang term for home-built, noncommercial radio equipment. [1] Design and construction of equipment from first principles is valued by amateur radio hobbyists, known as "hams", for educational value, and to allow experimentation and development of techniques or levels of performance not readily available as commercial products.
Enthusiasts operate QRP radios on the HF bands in portable modes, usually carrying the radios in backpacks, with whip antennas. Some QRPers prefer to construct their equipment from kits, published plans, [15] or homebrew it from scratch. Many popular designs are based on the NE612 mixer IC, i.e. the K1, K2, ATS series and the Softrock SDR.
In the United States, amateur radio AM activity can be found on mediumwave, MF and shortwave, HF frequencies (in MHz) which include 1.880-1.890, 3.885, 7.290, 14.286, 21.390, and 29.000-29.200, and feature swap nets that cater to interest in vintage AM equipment.
3–30 MHz (HF) 5–10 CW / SSB / wide band RX Yes BITX40 Kit 40m 7 SSB: No QCX / QCX+ / QCXmini [49] Kit Built for a single band 80m / 60m / 40m / 30m / 20m / 17m 5 CW: Yes QDX [50] Kit 80m / 40m / 30m / 20m 5 Digital modes (WSJT-X and JS8Call, primarily) Yes 2N2/40+ Homebrew 40m (mods for other bands) 2 CW N/A Small Wonder Labs SW+ Kit Single ...
Yaesu FT-7B. Yaesu FT-7 is a rugged, solid state and modular built HF amateur-band radio transceiver, suitable for fixed and for mobile operation.The set was built by the Yaesu Corporation in Japan in the late 1970s and early 1980s.
A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands. A quad is a Yagi–Uda antenna ("Yagi") made from loop elements instead of dipoles: It consists of a driven element and one or more parasitic elements ; however in a quad, each of the loop elements may be square, round, or some other shape.
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