adi hand mic

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adi hand mic

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Antennas : Horn

  • What is Horn Antenna - Horn Antenna - The energy of the beam when slowly transform into radiation, the losses are reduced and the focussing of the beam improves. A Horn antenna may be considered as a flared out wave guide, by which the directivity is improved and the diffraction is reduced. One of the first horn antennas was constructed in 1897 by Bengali-Indian radio researcher Jagadish Chandra Bose in his pioneering experiments with microwaves. The modern horn antenna was invented independently in 1938 by Wilmer Barrow and G. C. Southworth. This Horn model antenna is suitable employed in the UHF or SHF radio bands. Making this horn model antenna it will be easy for a beginner to make if it works in the 10GHz frequency, because small dimensions so it is not so difficult and also offers gain up to 25dBi.
    [ Hits: 74 | Votes: 0 | Rating: 0 ]
Antennas : Tuners
  • Semi-automatic antenna tuner project - Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands)
    [ Hits: 291 | Votes: 0 | Rating: 0 ]
Manufacturers : Accessories
  • Hands Free - Radcom Labs - The SAFE SPEAK HF3 is the third generation of a unique Hands-Free microphone system for two-way radio communications. The HF3 can be used with almost any radio transceiver and is ideal for permanent installation in a vehicle or temporary use during emergencies or special events.
    [ Hits: 173 | Votes: 1 | Rating: 10 ]
Manufacturers : Cable and Connectors
  • W2ENY - Radio Accessories - Handcrafted Accessories for the shack by W2ENY includes Full range headphones with a mic, computer interfaces, mic ptt adapters
    [ Hits: 642 | Votes: 2 | Rating: 6.5 ]
Shopping and Services : Regional : Asia
  • Asia Radio Sales - Online shop based in hong kong offer batteries mic speakers adaptors programming cables earpieces telescopic antennas handheld antennas desktop chargers handheld speakers. Kenwood Icom Yaesu and Alinco dealer
    [ Hits: 3181 | Votes: 75 | Rating: 8.78 ]
Technical Reference : Mic wiring
  • Astatic Mic Wiring Handbook - Complete microphone wiring handbook for most popular radio transceivers provided by Astatic Microphones.
    [ Hits: 183 | Votes: 1 | Rating: 10 ]
Technical Reference : QRP Projects
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