California Tube Laboratory - CTL designs and manufactures a wide range of high-power pulse and CW magnetrons, and provides cost-effective magnetron rebuild services for commercial, industrial and defense users.

Operating Modes : Morse code

The Advantages of CW - CW is not just another mode like SSB, FM, PSK-31, etc. It is a unique mode that has alot of advantages.

The Meaning of CW - Is CW an Archaic Relic of the Past? by Ed Sieb, VA3ES

Operating Modes : Morse code : Learning Morse Code

CW lessons by IK2YRT - The lessons are available in .MP3 format and has been keyed by Mario IK2YRT and digitally recorded by Luca IW2CZG

Operating Modes : Morse code : Morse operating guides

CW Bass Ackwards - CW or CW-R differences and when to use them

Operating Modes : QRSS

QRSS CW - Receiving QRSS CW on your PC by G0MRF

Radio Equipment : HF Transceivers : Elecraft K2

Elecraft K2 Improving CW Filter - Here is a cheap and simple way to significantly improve the K2 CW filter(s). With this mod, even strong signals will fade to black as they tune out of the filter pass band

Radio Equipment : HF Transceivers : Yaesu FT-920

Yaesu FT-920 Inrad CW Filter Mod - This modification allows the use of two filters. Either one or two filters in cascade may be selected

FT-920 knwon problems - Cannot record CW message, AFSK not working, tracking not working, meter peak hold, on Yaesu FT-920.

Software : Software Defined Radio

K9DUR Voice Keyer - Voice Keyer was specifically written to interface to PowerSDR via Virtual Audio Cable (VAC)

Software : Voice Keyer

VIT Voice Keyer - The VIT Voice Keyer is a simple soundcard based voice keyer. It plays various recordings and output them to your radio and key the PTT line.

Sound Byte - Sound Byte is a voice keyer for contests as well as general ham radio use. Windows and Mac, commercial by Black Cat Systems

Technical Reference : Beacon keyers

OZ2M - Next generation beacon - Next Generation Beacon hardware platform encompasses both analog and digital modes, i.e. CW FSK and MGM in a mixed mode configuration. The advantage of the mixed mode is that humans can decode the CW FSK by ear and the MGM can be decoded by computers way below what is audible. Therefore the MGM can be used for “pre-human-conditions” or early warning monitoring.

Technical Reference : Keyers

Notes on N1MM Voice Keyer - Setting up the N1MM Voice Keyer using the Ultimate Linking Interface (ULI)

CW K Pip Tone Unit - This is an add on for anyone who wants an automatic CW \"K\" PIP tone after each over.

Technical Reference : Morse Keys

Single Lever CW Paddle - An inexpensive CW key you can build

Technical Reference : Software Defined Radio

FireFly 20M CW SDR - Build FireFly the world of SMD SDR