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APRSTT translate-O-Matic convert online your callsign in DTMF -
Sell generator, and generator parts from generac, guardian, asco, and more -
A new ham radio shack desk made of a solid core oak door. -
Internal Bluetooth interface for miniVNA, Bluetooth connection to the PC allow Full cordless operation with ao external components -
An Android based CW practice program based on simulated QSOs. The app will generate Morse code sounds from 5-50 words per minute. -
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Repairing a Cushcraft R7000 antenna featuring several problems, mostly concerning coils and the insulating parts of the antenna. -
An home made multimeter using a SparkFun multimeter kit, includes a time lapse movies of multimeter kit assembling -
Reivews of the Icom IC 7100 HF VHF UHF transceiver -
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Some basic tips for successful QSLing, in particular when utilizing the services of a QSL Manager by W5UE -
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The Metropolitan Amateur Repeater System's KJ6TQ repeater serves Los Angeles Area ham radio operators on 447.820 MHz -
Lightning Arrestors, High current filters manufacturer -
Tektronix Oscilloscope Tutorial Learning Center, includes tutorials for understanding oscilloscope basics and operation. -
One common semiconductor material, silicon, is far more widely used in electronics than germanium, partly because it can operate at much higher temperatures. Semiconductors are crystalline materials with electrical resistivity values between conductors and insulators, whose conductivity can be altered through _doping_ with impurities like arsenic or phosphorous to create N-type (excess electrons) or P-type (electron vacancies) materials. Semiconductor devices, such as diodes, transistors, and integrated circuits, leverage these properties to control electron flow in circuits. A diode, a two-terminal device with an anode and cathode, primarily permits current flow in one direction, making it useful as a rectifier to convert AC to DC. Specialized diodes include Zener diodes for voltage regulation and Light-Emitting Diodes (LEDs) that produce light when current passes through them. Logic circuits, fundamental to digital electronics, have binary inputs and outputs, performing functions like AND, OR, and NOT gates, and can be constructed from various binary devices including solid-state diodes and transistors. A transistor is an active semiconductor device with at least three terminals (base, emitter, collector), capable of amplifying current. Integrated circuits (ICs), often called chips, are electronic circuits built on a semiconductor substrate, typically silicon. ICs are classified by transistor type (bipolar or MOS) and integration scale: Small-Scale Integration (SSI) with fewer than 10 transistors, Medium-Scale Integration (10-100), Large-Scale Integration (LSI) with 100-1,000, and Very-Large-Scale Integration (VLSI) with more than **1,000** transistors. ICs can be analog, digital, or hybrid, offering virtually limitless functions. -
UA9QCQ site was created as a website for those who participate in various ham radio contests. In the dedicated section, you can view the competition schedule of events. Each event has link to the ruole of competition. Events data is updated monthly on the eve of the next month. We try to ensure that our info contains only up-to-date data. -
A series of slides, videos and handouts to help people get started in amateur radio in the UK. -
Amateur Radio Store, dealer for DXZkit products, Heil Sound, Arrow, Miracle based in Northern Colorado -
DX Pedition to St Helena 10-80 meters bands SSB RTTY FT8 CW by G0VDE -
This project is a full wavelength, horizontal, loop antenna for the 40 metre Amateur Radio band, built using insulated copper wire in a diamond shape, supported by egg insulators, tethered to 4 masts, each 6.5m high -
A simple slim jim antenna for 433 MHz. Simple drawings and pictures of a simple Slim Jim antenna. -
A Practical, 5-Band Homebrew Wire Beam the Upside-Down Umbrella -
ARI Associazione Radioamatori Italiani Sezione di Genova IQ1GE -
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Amatuer Radio Club on Idaho -
Club in Cleveland, White County, Georgia, promoting friendship, mutual assistance, and learning. -
Kirisun a fully indipendent company on the professional radio communications equipment incuding DMR, portable two-way radio and mobile radio and repeaters. -
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Amateur Radio operators from the area around the town of South Lyon in Southeastern Michigan -
The website of the Orca DX and Contest Club. -
This is a project aboout compact and portable a QRP antenna tuner for use in the HF ham radio bands from 3-30 MHz, even if it's a compact and efficient project this small antenna tuner will not match any possible load. -
Remembrance Day Contest Logger free Windows software. Remembrance Day is a popular contest in Australia. -
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Receive and decode SSTV amateur radio SSTV signals with this small and powerfull SSTV decoder app for Android devices. Requires access to microphone. -
Setting the pace in Cleveland County Amateur Radio for over 50 years. ARRL Affiliated / Sponsor for ARES (amateuer radio emergency service) of Cleveland County, NC. Sponsor of the famous Shelby Hamfest -
Raivavae Austral Islands by Don, VE7DS and Dave, K3EL as TX5RV -
The Laurel Highlands VHF Society, Inc. owns and operates the Acme repeater, located on the Chestnut Ridge in southwestern Pennsylvania. -
Coordinates amateur radio repeater systems, control and link frequencies -
A 144 MHz transverter made by ur3lmz and connected to and Elecraft KX2 transceiver -
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Conneaut Amateur Radio Club Ohio W8BHZ yahoo group -
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New Zealand Women Amateur Radio Operators, to promote and encourage interest in amateur radio amongst women. -
Papua New Guinea 2011 DX pedition official web site -
Vacuum tubes and more from the tubular years
