key switch

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Cheap antenna to make from 160m - 6m ^pop - The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD
[ Hits: 46513 | Votes: 28 | Rating: 7.61 ]

Building a VHF Contest Station - Building an amateur station for competitive radiosport involves a number of critical steps, regardless of the band or bands you focus on. These include, but are certainly not limited to: Station layout, Equipment interconnection and switching, Inter-station interference, Antenna selection. Radio interface with the logging program, CW and voice keyer integration, Rotator control
[ Hits: 336 | Votes: 1 | Rating: 4 ]

EZMaster by HamRadioSolutions - EZMASTER the all mode all in one interface. USB/Parallel/Serial Device. Include 75 sec Digital Voice Keyer, K1EL Winkey CW Keyer, SO2R switching, two radio interface, two RTTY audio insulated ports, two flexible Antenna Switch control. Ideal for Contesting, SO1R, SO2R, field day and daily activity. Compatibile with all software on the market : CT, CTWIN, TR, NA, WriteLog, N1MM, WinTest, MMTTY, MIXW and more .
[ Hits: 2085 | Votes: 4 | Rating: 4.25 ]
microHAM - Accessories for your hamshack, such as Band Decoders, various types of Antenna Switches, Antenna Stacking devices, special devices designed dedicated for the SO2R operating technique, USB Interfaces, cw keyers and many others
[ Hits: 3605 | Votes: 2 | Rating: 10 ]

Ham Stack - Microcontrollers for many ham radio applications including repeater controllers, beacon transmitters, keyers, antenna switches, battery monitors, etc.
[ Hits: 697 | Votes: 1 | Rating: 10 ]
microHAM - Supply high quality accessories for your ham shack, including Band Decoders, various types of Antenna Switches, Antenna Stacking devices, special devices designed for the SO2R operator, USB Interfaces, Digital Mode Interfaces, Keyers and many others
[ Hits: 2000 | Votes: 2 | Rating: 10 ]

Jackson Harbor Press Kits - Ham Radio Kits, morse keyers, Morse code voltmeter / DC switch / battery saver
[ Hits: 1436 | Votes: 1 | Rating: 10 ]

Iambic Keying - 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.
[ Hits: 627 | Votes: 0 | Rating: 0 ]

Transmit Key Function fir TR-7 - Useful Function for the Drake TR-7(A) \"Store\" Switch Add A Transmit Key Function
[ Hits: 235 | Votes: 0 | Rating: 0 ]

How to use Baofeng UV-B5 flash light switch for LCD background light - Baofeng UV-B5 LCD background light is turned on only when some keys are pressed and stays on far a very short time. This article explains how to use flash switch which is used in UV-B6 version but in UV-B5 has no function.
[ Hits: 292 | Votes: 1 | Rating: 10 ]

Electronics USA - Manufacturer of led digital clocks, digital timers, countdown clocks, electronic kits, audio switches, binary clock, telegraph keys, and cool gadgets.
[ Hits: 1418 | Votes: 0 | Rating: 0 ]

Turbolog - TurboLog is a station management and logging program for the discerning radio amateur / hamradio operator. Besides powerful database and logging functions there is a fully integrated support for the control of typical radio station equipment, e.g. Transceivers, Packet radio, Morse and voice keyer, Digital modes terminal, Antenna switching, Acoustic alerting, and more. Trial version available
[ Hits: 1311 | Votes: 2 | Rating: 4 ]

1.5 to 30 Mhz RF Amplifier ^pop - This high range amplifier is very small [SB200 size] Vacuum variable input and output caps as well input and output switching.
[ Hits: 53859 | Votes: 43 | Rating: 3.82 ]

Homebrew Dow-Key - Homemade an external T/R switch for your vintage RTX by KB8OJH
[ Hits: 353 | Votes: 0 | Rating: 0 ]
CW Key-to-Rig Switch Box - This is an easy afternoon project to switch multiple cw keys between several rigs. If you've ever wanted to change keys on one rig or use one key on several rigs, this gadget makes it easy. Plug keys into the box inputs, and plug each of the box outputs into a rig. No need to fumble around behind the rigs to move a key from one to another or to swap paddles for a bug.
[ Hits: 46 | Votes: 0 | Rating: 0 ]

AVR Butterfly Keyer - 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.
[ Hits: 683 | Votes: 0 | Rating: 0 ]

The Rock-Mite CW Kit - The Rock-Mite is a 40m CW kit offered by Small Wonder Labs . It features built-in keyer, direct conversion receiver with a crystal RF bandpass filter, 500 milliwatts of power, and switchable frequency offsets to work around QRM
[ Hits: 1157 | Votes: 0 | Rating: 0 ]