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Very simple iambic keyer with only two chips

A morse keyer project with plan by m0xpd

Isolating traceiver and your computer with an opto-coupler component

This video will provide a foundation for understanding how power amplifier circuits work. If you are new to High Frequency Power Amplifier Circuit Design, this is the place to start.

Microcontrollers for many ham radio applications including repeater controllers, beacon transmitters, keyers, antenna switches, battery monitors, etc.

Key west amateur radio club w4llo

The Atmel AVR Butterfly is a credit card sized board which contains an AVR MEGA169 processor, a six character LCD display, a five way joystick navigation switch, a piezo speaker, a 3 volt lithium battery cell for power and a few other odds and ends.

The Vocal Keyer is a stand-alone voice keyer for your radio. It can be built with two 16-second or four 10-second recordable messages by KG4JJH

Two cheap CMOS ICs and a few transistors was all that was required to rebuild an elderly TTL automatic morse keyer into a low current lightweight battery powered iambic morse keyer.

Amateur radio kits. Makers of the WinKeyer, their goal is to keep homebrewing and kit building alive.

Collection of morse keys

Connecting and configurig an USB Sound Card key to the raspberry Pi to allow digital mode decoding and remote rig applications

Technical supplement manual of the Yaesu FT-8800R in english

Iambic Keying, Debunking the Myth by Marshall G. Emm, N1FN. A keying system controls transmitter activation, ranging from basic switches to electronic keyers that generate Morse code based on paddle input. Iambic keyers, introduced in the late 1950s, respond to simultaneous paddle closures with alternating dots and dashes. Despite touted efficiency, actual benefits are modest, offering about a 5% improvement in keystrokes, diminishing at higher speeds. Iambic keying's practical value is limited and may restrict sending speeds.

PDF manual of the TW4040 The Adventurer MonobanderTM TransWorld Antennas

Handcrafted sending instruments for the Morse enthusiasts. K4VIZ Morse keys and paddles manufactured by K8UL.

Designing a beacon keyer that transmit the relative output power along to call sign.

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

A Chaotic Collection of Keys, Paddles, and Bugs

Modification to solve key clicks on FT 1000 MP

Setting up Digital voice keyer via USB for Kenwood TS-590

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.

Telegraphy collection, telegraph, sounder, relay by F8JZR in french

A project to implement a simple and efficient CW Keyer and a side tone generator with Arduino

An open design exercise in interface archaeology, that decodes the input from a classic Morse key to send twitter messages

How do we make an HF station work more effectively? Antennas are the key!

A homemade band pass filter for the 30 meter band based on the original VE7BPO design

A RS-232 to DB9 CW Radio interface with schematic diagram to connect your pc running CT by K1EA or Writelog to your keyer.

Keyclicks and NB modifications for the Yaesu FT-1000MP Mark-V HF transceiver

Amateur radio kits online shop, includes Mini Touch Key, QRP HF SSB and CW transceiver kits

A custom manual for the Yaesu FT 450 owners, tha includes system controls, factory reset procedure, procedural uses, memory management, programming and many more

A website for those who also enjoy Morse code telegraphy and the keys that make it.

4 Square K9AY Array project for 80 and 40 meters band

Having Fun & Fellowship since 1955. The Keystone VHF Club has extensive facilities right outside Rocky Ridge Park just northeast of York, PA.

The purpose of the National Silent Key Archive is to collect and preserve photographs, life event narratives, and data artifacts of deceased Amateur Radio operators, and to make the Archive's digital library available to anyone wishing to view its contents online.

CW, padlles key collection

A keyed piezo beeper, connected to the microphone jack of a HT, appeared feasible as a ready-made MCW generator.

High speed telegraphy without key clicks by SM5BSZ

The Maple Valley Amateur Radio Club (MVARC), an ARRL Affiliate club, is a group of amateur radio enthusiasts in the greater Maple Valley area who meet and engage in activities to further the advancement of this hobby for the good of ourselves and the community.

Telegraph Key Collection, ham radio telegraphy, cw, radio telegraphy, ham radio key, morse code key collection, key collecting, El-Key, Nikey, Vibroplex Champion, Vibroplex Blue Racer 2000, Bug, J-38, J-47, Navy Flame Proof key, Bencher, CT 599 MB key, amateur radio, amateur radio history, cw history, morse code history

DTMF Remote Controls, DTMF tone generators and broadcasting products, remote broadcasting via cell phone, cell phone mixer and remote phone keypad

Battery-powered monitor designed to provide an audible indication of keying for those whose rigs lack a CW sidetone

Rotation-Shift Keying description, imlementation and test results. Orthogonal BPSK, Twist Modulation, Moon Bounce

A voice keyer for field day or general portable operations made with the DH8BQA cq machine kit

Icom IC 756 Pro 3 English User Manual in a PDF file

CW Keyer Kit with capacitive touch paddle, with a lot of nice features. Easily expandable to a Morse code decoder

A Picaxe Morse Code keyer project with source code and links to useful resources by K6ACJ

Simple steps you can take to solve most problems caused by station equipment

Professional CB Radio Repair. Have repaired CB Radios and 10 Meter Radios for over 30 years

Server allowing operation of the Winkey USB by K1EL with any Linux program with UDP keyer capability.