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The Northwest’s Largest Ham Convention

his controller uses the Yaesu GS-232 command set to control a Yaesu G-5500 Az-El rotor. The controller was designed to be compatible with the SatPC32 tracking program and should work with any tracking program that supports the Yaesu GS-232 format. This controller has been tested with the Arduino UNO and the Arduino Mega2560.

Description of an HF beacon keyer with telemetry. What makes the keyer rather different is its versatility - it is a multi-mode unit, with ASK and FSK modulation, sending Feld-Hell and Morse on command

A page with several testing and measurement resources usefull for those ham radio operators who needs to align or repair their own radio equipment.

The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency. This article explains a method using a RF signal generator at +10dBm output into the coaxial trap.

Guide to the Yaseu VX5r, Modes, Memory Banks, Buttons, SET commands, How to save a memory, Tricks and Memory Channel Listing

This is a detailed, technical piece, intended mostly for makers and more creative activators, who enjoy building and using their own tools on the summits. A multiband portable antenna tuner supporting 10W, small and light, suitable for SOTA operations

Electronic compoenents manufacturer of precision CMOS analog integrated circuits for OEMs of industrial controls, computers, instrumentation, automotive, and telecom. Transistor mosfet.

The TECLA Thirty, an early wireless age crystal set, is featured among a gallery of over 100 collectible headphones, with detailed close-up photos of vintage models. Several pages offer vintage headphones for sale, including Brandes, Baldwin, and Western Electric, suitable for crystal set use or collecting. Construction details are provided for a reproduction KILBOURNE AND CLARKE crystal set, built with vintage 1920s parts and featuring a miniature variable condenser for fine tuning. The resource also presents a project for a simple crystal radio and a 1-tube amplifier, complete with a schematic and component diagram, suitable for driving a horn speaker or amplifying weak signals for headphones. Instructions for mounting argentiferous galena detector crystals are included, along with information on MRL Handbooks covering crystal detectors and modern diodes. Additional projects include a 2A3 single-ended triode tube amplifier and two stereo tube amps using 12AX7, 6V6, 5Y3G, 6SN7, VT-25, and 5U4G tubes.

Hamradio, Webcams, Radio and TV-Links by DF3SP Walter

The Dixie Amateur Radio Club, Inc. is an association of federally licensed Amateur Radio operators (also known as "ham radio" operators) who primarily reside in southwestern Utah, mostly in the greater St. George City metropolitan area.

An interesting article on end fed half-wave wire antennas with a couple of original experiments. Author illustrate the role of the QRP matchbox, and a 40/20 meter antenna with a center stub making it a large bandwidth antenna for 40 and 20. Includes also an 80/40 end fed with the typical coil to make it available on 80 merts band.

Inventor of the Beverage antenna

Southern Vermont Amateur Radio Club

N4L design and manufacture versatile, high-accuracy, easy to use instruments for power electronic test & measurement

OH7UG QSO blog from Finland

Established in 1954, RAIBC is a national society and Charity, dedicated to supporting Radio Amateurs and Short-wave Listeners with disabilities. The RAIBC logo is recognised throughout the amateur radio world.

CS5TRGM Tertulia Radioamadoristica Guglielmo Marconi

This resource provides a historical analysis of amateur radio call sign assignment policies in the United States, detailing regulatory shifts from the Department of Commerce to the Federal Radio Commission (FRC) and subsequently the Federal Communications Commission (FCC). It documents the evolution of call sign issuance, from early reissuance practices in the 1920s to the implementation of the Group Call Sign Assignment System on March 24, 1978. This system categorized call signs (e.g., 1x2, 2x1, 1x3, 2x3 formats) into groups A, B, C, and D, correlating with license classes such as Extra, Advanced, General, and Novice, and specifying prefixes for contiguous U.S. and territorial areas (e.g., _AH_, _KP_, _KL_). The document further details the legislative process leading to the modern Vanity Call Sign program, initiated by a petition in June 1990 and formalized by the Omnibus Budget Reconciliation Act of August 10, 1993. It outlines the FCC's adoption of final rules on December 23, 1994, and the subsequent fee structure, with the first vanity call sign issued on May 31, 1996, at a cost of **$30.00** for a ten-year term. The ARRL's proposed "starting gates" implementation strategy is also described, which phased in eligibility for vanity call signs based on license class and prior holder status. DXZone Focus: Historical Document | Regulatory Analysis | Call Sign Formats | Fee Structure

Sponsors of WAVE, WACAN awards

The QCX 5W CW Transceiver From QRP Labs, a detailed article describing from the unboxing of the component to the final assembly of the CW QRP Transceiver

This software loads WPX type ADIF files with the <PFX:xxx> tag and calculates the different callsign prefixes. The software will load and capture the totals for big files. ADIF files must have the .adi file extension.

Big Rapids is located in central Michigan and is home to about 11,000. Big Rapids is also home to Ferris State University and the Big Rapids Area Amateur Radio Club

Bird Technologies, The RF Experts - manufacturer of Analyzers, Attenuators, Terminations & Loads, Duplexer and Triplexers and RF Wattmeters

G2XV G8EVY 1919 - 2010 Promoting Amateur Radio in Cambridge for over 90 years

The radio beacon DI2AM on museum-ship in Rostock Schmarl

Drake Radio Service & Repair, Refurbishing Services

Dutch Young Ladies Club is part of the VERON and was founded in 1981. The ladies formed a contestgroup, starting in 2012, their slogan is -Proud 2B PI4YLC-

Ham radio personal site by F4FVW

Fort Knox Amateur Radio Club Kentucky USA

Launch of a hybrid rocket from high altitude by untsville Alabama L5 Society

High quality surge protector, lightning protection, surge protection, and power protection products

A small, easy to build, copper tube magnetic loop antenna for the 2 meters band. In Italian

Milton Amateur Radio Club is located in Milton, Florida about 20 miles east of Pensacola, Florida. Drop by and visit our web site.

An exaustive article on how to receive the QO-100 geostationary satellite, that carries transponders usable by amateur radio operators

This resistor calculation tool shows which combinations of two resistors, series or parallel, gives a match better than the closest standard value.

rpitx is a general radio frequency transmitter for Raspberry Pi which doesn't require any other hardware unless filter to avoid intererence. It can handle frequencies from 5 KHz up to 1500 MHz.

Sending and receiving text with Morse code light pulses across the room is a fun and cheap project you can do on a Raspberry Pi or Arduino or any other microcontroller. This post explains how I did it, and how you can do it too.

A blog by W1REI dedicated to ham radio hobby

Established in 1938 & Celebrating 72 years of Amateur Radio in Gippsland & Latrobe Valley

Lawton Fort Sill Amateur Radio Club serving the Lawton and Fort Sill community.

233BG001 Stephane Homepage - News about 11M Band.

International Ham Radio DX Pedition San Adnres Isl - 12 Nov. - 25 Nov. 2017

Free Windows program intended to be used as a training aid for sending CW using an iambic Winkeyer from K1EL Systems. Iambic Master operates as a game. The objective of the game is to send the text in the Target box as accurately as possible.

Official web site of the Idaho QSO party

Ham Radio blog for N3FHW

OK2ZC ex ok2bee homepage with log search and photos

Radioamateurs Grimbergen, sectie NBT, UBA, ON6NB Belgium