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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.
Smaller in size than "boat anchors", "glowbug" is a term used by US amateurs to describe a simple home-made tube-type radio set. The majority of glowbug transmitters are designed to be used in the CW radiotelegraphy mode. [21] Glowbug transmitters having simple, tube-based designs were part of many beginner ham stations.
It also works with WSJT-X to control the transceiver while making digital contacts, etc. HamLogBook by K6REA Proprietary, Paid Windows HamLogBook is a simple logger, with a Windows 95-inspired user interface. It supports common ADIF fields, can look up callsigns on QRZ, exports ADIF 2.0 and can automatically upload to eqsl.net. log4om: Freeware
It can use SSB, FSK and CW on all bands. [33] The TS-820S' power consumption is 57 watts (with heaters on) when receiving and 292 watts when transmitting. The transceiver's peak envelope power output on SSB and CW is about 100 watts, and about 60 watts on FSK. Its tubes are tuned manually, using the transceiver's drive, plate and load controls.
Usually a WSPR station contains a computer and a transceiver, but it is also possible to build very simple beacon transmitters with little effort. For example a simple WSPR beacon can be built using the Si 570, [5] or Si 5351. [6] The Raspberry Pi can also be used as WSPR beacon.
Example of transceiver optimized for QRP CW operation: Elecraft K2 Many of the larger, more powerful commercial transceivers permit the operator to lower their output level to QRP levels. Commercial transceivers specially designed to operate at or near QRP power levels have been commercially available since the late 1960s.
CBS's new noise-reduction system for phonograph records. Build yours today and take advantage of the new, noiseless CX-encoded discs. Joel Cohen: 52/12: December 1981 4 simple toys: Easy to build and yet entertaining to a youngster. They all make delightful presents for the holiday season. Dan and Diane Talbot: 52/12: December 1981 Hi-fi mini ...
QSK operation is a technical challenge: It requires very fast T/R RF switches at the high power and voltage side of the radio transceiver. Such switches must be controlled automatically by the telegraph key, and as such they must be rapid enough to be perceptually undetectable by the telegraph operator.
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