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• Switchable Antenna 80/160 meters band - A switchable antenna for 80/160 meters by IK1ZOY. A new version of a 1/4L 80 m. dipole modified for use in 160 m. band. using it's own coaxial cable feeder to wrap a coil.
  [ Hits: 17199 | Votes: 6 | Rating: 5.5 ]

• Beverage switching box  ^updated - Sharing beverage antennas with this switch boxes is possible. This article describes a 6-position remote antenna switch for Beverage antennas on 3 bands (160m, 80m, 40m). It allows selecting one of 6 antennas for each band without affecting other receivers. The system uses a control box with a rotary switch and a separate splitting box with bandpass filters for each band.
  [ Hits: 5507 | Votes: 3 | Rating: 4.33 ]

• 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: 46512 | Votes: 28 | Rating: 7.61 ]

• OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
  [ Hits: 20373 | Votes: 36 | Rating: 8.11 ]

• 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 ]

• Alpha Delta Communications - Manufacturers and distributors of coaxial surge protectors, coaxial switches, insultators, HF fixed wire antennas
  [ Hits: 3002 | Votes: 5 | Rating: 4.86 ]
• Daiwa - Daiwa Industry, maker of power suppliers, coax cable and antenna switches, power meters, SWR meters, DC-DC converters
  [ Hits: 3309 | Votes: 7 | Rating: 7.79 ]

• Electronika International Inc - Electronika International Inc, Cleveland, OHIO manufacturers wide range of Coaxial Cable Assembly, Coaxial Connectors & Adapters, Power Dividers, Attenuators, Coaxial Switches, Amplifiers, Fiber Optic cords, Bias TEE, Isolator & Circulator and other products
  [ Hits: 647 | Votes: 1 | Rating: 10 ]

• Ham Stack - Microcontrollers for many ham radio applications including repeater controllers, beacon transmitters, keyers, antenna switches, battery monitors, etc.
  [ Hits: 696 | 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 ]

• Otto engineering - Otto engineering is comprised of two divisions otto controls and otto communications. otto controls designs and manufactures a full line of switches and grips used in heavy equipment, aerospace, marine, medical and other demanding applications. otto communications designs and manufactures audio accessories for two-way radios used in public safety, police, fire, retail, hospitality manufacturing and other markets.
  [ Hits: 1196 | Votes: 2 | Rating: 7.5 ]

• Multi-Tech Industries, Inc. - Manufacturing Precision Products Since 1969. Rotary Switches, Strain Reliefs, Ground Fault Units
  [ Hits: 420 | Votes: 1 | Rating: 9 ]

• Sherwood Engineering Inc. - Cooling kits, drake filters, speach processors, audio switch boxes, synchronous AM detectors,
  [ Hits: 1162 | Votes: 4 | Rating: 5.5 ]

• Jetstream - Antennas, base mobile scanner and vhf antenna, coax cables, coax switch, Lightning Arrestor, mounts, power supply, speakers and wattmeters
  [ Hits: 5662 | Votes: 5 | Rating: 4.8 ]

• Kenwood TH F6A service menu switch - TH F6A service menu, On TH-F6 transceiver, the Service Menu is accessible only by opening the transceiver
  [ Hits: 2811 | Votes: 5 | Rating: 5.4 ]

• 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 ]

• Remote antenna switch - remote antenna switching project by EI7BA
  [ Hits: 8362 | Votes: 8 | Rating: 5.12 ]

• QST signalink review - SL-1 - Designed to handle audio signal interfacing as well as transmit/receive switching Reviewed by Steve Ford, WB8IM
  [ Hits: 655 | Votes: 0 | Rating: 0 ]

• A 6M Transverter - Build a transverter based on a 6M receive converter. A 32MHz TTL oscillator is used as the local oscillator for both transmitting and receiving. RX/TX switching is handled by three SPDT relays.
  [ Hits: 4833 | Votes: 2 | Rating: 10 ]

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