Vintage amateur radio is a subset of amateur radio activity and is considered a form of nostalgia or hobby much like antique car collecting, where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from bygone years, most notably those using vacuum tube technology.
Amateur radio or ham radio is practised by more than 16,000 licensed users in India. The first amateur radio operator was licensed in 1921, and by the mid-1930s, there were around 20 amateur radio operators in India.
Radio Electronics Pages. General information. The laws regarding the use of the radiospectrum are actually fairly uniform, and established byinternational treaty, for the obvious reason that radio signals do notrespect international borders.
Learn and research amateur radio, science, chemistry, biology, physics, math, astronomy, electronics, and much more. 101science.com is the internet science PORTAL to more than 20,000 science sites.
Downloads – Amateur Radio Software Morsemaker2 (v1.2) — All versions of 32-bit Windows MorseMaker is an up-to-date replacement for the …
Traditional amateur radio (ham radio) from the classic radios to the latest resources. Let’s Radio!
Some basics. Cavity filters are the basic circuitry behind a Duplexer and are sharply tuned resonant circuit that allow only certain frequencies to pass. Generically, filter of this kind are known as notch filters.
4. RESISTA N CE – . RESISTORS AND RESISTOR CIRCUITS – Resistance is the op position to current flow in various degrees. The practical unit of …
Collection Radio Frequency (RF) Amphlifier circuits, schematics or diagrams. DiscoverCircuits has 45,000+ free electronic circuits …
Circuit digrams of Ham Radio equipments including 7 MHz SSB Transceiver, AM, FM, DSB transmitters, FSM, Dummy load, Antenna, Ladder filter, receiver and various rf and hobby circuits.
