Search results

This R.F. current meter was developed to assist in measuring line currents in balance feed lines as used in the All Band HF Antenna.

Solar Panels Grid Tie Systems, Kits, Fountains, Chargers and more

Tait electronics provides advanced and reliable voice and data radio communications products and solutions, specialising in customised solutions for organisations worldwide.

This project involves the construction of a 5 Watt Morse code beacon transmitter that operates in the 28.200 to 28.300 section of the 10 Meter Amateur Radio band. The beacon controller uses an Arduino Uno microprocessor board to produce the three signals that control the transmitter.

Site officiel du world lighthouse on the air award - official web site for wlota award

This site is dedicated to design and analysis of micro- and millimeter wave filters from 0.5 to above 100 GHz.

President Karami Radio Society. Amateur Radio Club Station OD5RAK, Tripoli - Lebanon

Comparison of all the oscilloscopes available for hobbyists, digital oscilloscopes that you can get for under $500, or oscilloscopes that you can build yourself.

dogparkSDR is a native Macintosh visual radio display and interactive control software for any Flex Radio Systems

Gnerate morse code at various speeds and with lots of different types of content, everything from individual letters up to a full QSO.

The Indianapolis Police Scanner on Broadcastify allows users to listen to live police radio transmissions from Indianapolis. The website provides access to emergency communications and public safety broadcasts.

Mobilinkd Bluetooth APRS TNC. With your radio, your Android phone and this TNC, you have everything you need to get started with APRS.

Solar panels manufacturer based in spain

Antique radio collection from brazil, philips , philco, telefunken, blaupunkt, saba, mende, rca, ekco, pilot, general electric, bush and more

Friis-It NF is the first iPhone OS based application that allows you to calculate noise figure, system sensitivity, and cascaded gain for an RF Receiver system

How to understand resistor colour codes

A dual band portable inverted V antenna for 80 and 40 meters band with dimensions for other bands and several assembling instruction

SCARA is located in Siskiyou County, CA. Features information on club events, meetings, and membership.

Whether you're teaching a ham radio class or studying for your license on your own I hope you find this website useful.

Personal (b)log by a SWL in north Italy

A presentation of the Yagi Antennas, and other interesting tid-bits by Brian Mileshosky. The document provides an in-depth exploration of the Yagi-Uda antenna, detailing its historical development, design principles, and performance characteristics. Originally described in the 1920s, the Yagi antenna features a driven element and parasitic elements, including reflectors and directors, which collectively determine its behavior. The document highlights how element lengths, diameters, and spacing influence gain, impedance, and directivity. It also discusses the antenna's reciprocal nature and presents data on typical gain values for various element configurations. Additionally, the text covers practical considerations, such as the construction of a "Tape Measure Yagi" for amateur use, and touches on related antenna types like dipoles and their application in Near Vertical Incident Skywave (NVIS) communication.

Homebrewing special insulators with PVC and copper corona rings

Bohannon Battery Distributors, for All your Battery needs, since 1987

The CSV19 is an homemade antenna launcher project. In this article you can find pictures, drawing, and material list

Pc based test and measurement equipment and instrumentation: digital oscilloscope, logic analyzer and spectrum analyzer.

Manual of the BD-35 Dual Band VHF UHF RF power amplifier by Mirage Amp

Coil winding on 4 inch PVC tubing with home-made tooling.

Leader in the development, design, manufacture, marketing and distribution of copper, aluminum and fiber optic wire and cable products for the energy, industrial, specialty and communications markets

Converting a HyperDawg to an antenna launcher

Convert any text in morse code mp3 file, you can choose speed from 5 to 50 wpm and tone frequency

The Radio Reference Database for United States

A very active repeater system in NYC streaming live 24/7 on thier website & on shoutcast under the listing WB2HWW & also can be heard world wide on 10 meters 29.660 with links on Echolink & IRLP

Electronic test and measurement; digital multimeters, clamp-ons, portable printers, meters and dataloggers.

An 11 meter dx group international dxers

Kenwood schematics diagrams in high resolution format, includes Kenwood TS-830S , TS-820S and TS-520S

Filters for the commercial 2 way market, MATV, FM broadcast, laboratory, marine industry, amateur radio, scanner and short wave. Antenna for amateur radio bands

The Microsniffer is a fully autoranging VHF or UHF sniffer which has been designed for those who are foxhunting on a budget.

Two find dipoles one for 75/40/20 and the other for 20/15. These 2 dipoles are at right angles to each other and the 20/15 dipole is located about 6 feet below the 75/40/20 fan dipole.

Designing your own QSL card is now easier than ever. This is a Program that helps you design and then Print your QSL cards filling them automatically with QSO data.

QST Green Radio Round-up from April 2006

A december 2003 QST article to Build a condenser microphone that will perform like the costly commercial units by KT4QW

Latchways are the world leaders in fall protection and the manufacturers of the mansafe range of products for working at height.

A web page dedicated to the Yaesu FT-817 with lots of links and usefull resources

A Chaotic Collection of Keys, Paddles, and Bugs

When I tell friends that I enjoy amateur radio contesting, their reaction is usually a quizzical stare. "What's that?" It is hard to explain in the span of a cocktail conversation, so here is the answer.

How to setup and install custom filters, usually inrad, into Yaesu FT 857 and FT 897 transceivers

A distributed capacity coaxial dipole antenna. The antenna is very broadbanded with a very flat swr on all band when setup of the antenna is done at the proper lenght and height.

Manufacturer of advanced electronic systems to measure such weather data as: wind speed, wind direction, wind chill, pressure, humidity, rainfall, and dew point.

Guidelines for optimal speaker placement inside our ham radio shacks

Modification to solve key clicks on FT 1000 MP