ham radio coax cable

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ham radio coax cable

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Antennas : Baluns : 1 to 1 Balun

  • A 1:1 Coaxial Balun  pop - PDF article about a coaxial 1:1 balun, original concept by I4BBE using a quarter-wavelength and the three-quarter-wave adapting sections with the 50-Ohm coaxial cable by I0QM
    [ Hits: 44462 | Votes: 30 | Rating: 7.22 ]
  • Simple HF Baluns for 50/75 ohm coax - Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.
    [ Hits: 15202 | Votes: 25 | Rating: 4.32 ]
Antennas : Bazooka
  • The Bazooka vertical  pop - This is a deviation from the wonderful antenna the Double Bazooka. The Vertical Bazooka, is made entirely from RG-8U coaxial cable.
    [ Hits: 36424 | Votes: 38 | Rating: 7.94 ]
Antennas : Dipole
  • An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX
    [ Hits: 8726 | Votes: 5 | Rating: 6 ]
Antennas : Feed Lines
  • Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
    [ Hits: 1826 | Votes: 4 | Rating: 8 ]
Antennas : J-Pole
  • A J-Pole for 2-meters and 70-cm  pop - An Easy Dual-Band VHF/UHF vertical Antenna made with a TV twin lead and coax cable
    [ Hits: 103662 | Votes: 135 | Rating: 5.97 ]
Antennas : Theory
  • Quarter Waves and Velocity Factor - Coax Velocity Factor in Baluns, Does it Matter? Test results show coaxial cable velocity factor does not always enter into stub length calculations especially in the world of Baluns
    [ Hits: 208 | Votes: 0 | Rating: 0 ]
Antennas : VHF UHF
  • DIY Dual Band 144-440 MHz vertical antenna  updated - A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.
    [ Hits: 1367 | Votes: 14 | Rating: 5.5 ]
Manufacturers : Cable and Connectors
  • Messi e Paoloni - High quality RF coax cables designed for ham radio use featuring high efficiency screening attenuation and transfer impedance.
    [ Hits: 241 | Votes: 2 | Rating: 10 ]
Shopping and Services : Accessories
  • Ham Radio Deals - Dealer for Alpha Delta hf antennas, switeches, Outbacker and super antennas, morse code keys, coax cable and military products, managed by W8GEG from Medina Ohio
    [ Hits: 932 | Votes: 5 | Rating: 9 ]
Shopping and Services : Ham Radio Stores
  • Midway Electronics - Midway Electronics supplies the area with electronic components, wire, cables, amateur radio transceivers, QRP kits, CB transceivers, GMRS radios, Shortwave radios, power supplies, antennas, coax, connector and ham radio accessories
    [ Hits: 215 | Votes: 2 | Rating: 3 ]
Software : Antenna analysis
  • ERP Calculator Plus - ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss
    [ Hits: 3001 | Votes: 9 | Rating: 5.11 ]
Technical Reference : Coax Cables and Connectors
  • Using 75 Ohm CATV Coaxial Cable - Tipo on using common 75 ohm coax with 50 ohm ham radio systems
    [ Hits: 591 | Votes: 1 | Rating: 8 ]
  • Coaxial Cable Attenuation Ratings - Two tables comparing several coax cables on attenuation and power ratings
    [ Hits: 627 | Votes: 1 | Rating: 10 ]
  • Coax Loss Calculator Online by K5VR - RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.
    [ Hits: 249 | Votes: 2 | Rating: 5 ]
Technical Reference : Lightning Protection Technical Reference : Radio Frequency Interference : Noise Reduction
  • Common-mode chokes Measurements - Common-mode chokes are useful solutions for RFI reduction. Winding a few turns of coaxial cable on the FT 240-31 toroid can reduced the noise below the received noise floor. In this article author measure different chokes
    [ Hits: 155 | Votes: 1 | Rating: 8 ]
Technical Reference : Vector Network Analyzer
  • miniVNA PRO Modifications - The mini Radio Solutions miniVNA PRO is the only affordable vector network analyser (VNA) I know of that offers remote wireless operation. This is very interesting because it allows to measure the input impedance of HF antennas installed at height without having to deal with coax cable lengths, baluns nor common mode suppression chokes. However, to render the miniVNA PRO truly field proof, it requires a number of significant modifications.
    [ Hits: 136 | Votes: 5 | Rating: 7.8 ]

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