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Antennas : 80M
  • Broadbanding the half-square on 80 meters - N6LF discusses a simple way to broadband the classic half-square antenna to operate in both the CW and SSB DX windows on 80/75 meters.
    [ Hits: 2283 | Votes: 2 | Rating: 4.5 ]
Antennas : Bazooka
  • Double Bazooka in attic - Discussion on Elmers Forum at eHam.net about setting up a bazooka antenna in an attic
    [ Hits: 3132 | Votes: 1 | Rating: 10 ]
Antennas : Feed Lines
  • Where Does the Power Go - An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line
    [ Hits: 735 | Votes: 3 | Rating: 10 ]
Antennas : Feed Lines : Open Wire
  • Homebrew ladder line - Homebewing ladder line discussion at qrz.com
    [ Hits: 2560 | Votes: 1 | Rating: 1 ]
Antennas : Satellite
  • Types of Coax in Satellite operations - Coax is a very important part of a satellite station. It is almost as important as the antennas you choose. This article discusses choosing coaxial cables for satellite communication, emphasizing factors like line loss. It compares types such as RG-8, RG-58, Belden 9913/9913F, LMR-400, and hardline, highlighting their impact on signal preservation.
    [ Hits: 2395 | Votes: 1 | Rating: 9 ]
Antennas : Sloper
  • Optimizing half-wave sloper arrays for 160 meters - This article presents a 160-meter variation of this family of antennas and, more importantly, a discussion of the details of how to get such a beast working really well.
    [ Hits: 5234 | Votes: 2 | Rating: 7 ]
Antennas : Theory
  • Stacking for 50MHz - Summary of discussion on stacking antennas on six meter band
    [ Hits: 1181 | Votes: 1 | Rating: 10 ]
Antennas : VHF UHF
  • Parabolic Discone antenna - This is the highest gain omni design the world may ever know having wide bandwidth
    [ Hits: 2704 | Votes: 3 | Rating: 9.33 ]
Antique Radios : Clubs
  • Michigan Antique Radio Club - Michigan Antique Radio Club, or MARC. The MARC was officially founded October 19, 1985 at the Dillon Inn (now the Hampton Inn) in Lansing, Michigan. Our mission: To preserve the history and enhance the knowledge of radio, television and related disciplines
    [ Hits: 426 | Votes: 1 | Rating: 10 ]
Internet and Radio : Forums Internet and Radio : Online Receivers
  • A Ham Radio Public utility HF Station - Merging Internet technology with Amateur Radio holds great promise. This article discusses the authors experiences in putting several Internet Remote Base stations on the air. By Stan Schretter, W4MQ, Brad Wyatt, K6WR, and Keith Lamonica, W7DXX
    [ Hits: 7341 | Votes: 18 | Rating: 3.65 ]
Manufacturers : Amplifiers
  • Discovery Power Amplifiers - The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world's leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms
    [ Hits: 3036 | Votes: 2 | Rating: 4 ]
Operating Modes : APRS Operating Modes : EME
  • EME with or without Signal Processing? - This page contains Contributions to a Discussion on the Moon-Net about the Application of Digital Signal Processing (DSP) Methods in Moonbounce.
    [ Hits: 366 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Kenwood TS-850 Software : Utilities
  • Voice descrambler - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band. Use it only if legally permitted in your country. I assume no responsabilities deriving from its use. Standard disclaimer applies
    [ Hits: 13565 | Votes: 38 | Rating: 6.16 ]
Technical Reference : Amplifiers : RF Amplifiers Theory Technical Reference : Electronics Technical Reference : Radio Frequency Interference
  • Phase Noise. - This is perhaps the most important parameter in many oscillators and it deserves an in-depth discussion on what it is, how it affects a system and how it can be minimised in an oscillator design.
    [ Hits: 612 | Votes: 0 | Rating: 0 ]
Technical Reference : Transverters
  • 50MHz-Transverter 10m/6m from DK7ZB - This transverter was built in 1994, a discription in three parts (german language) for DOWNLOAD as PDF-files. Circuit, printed-boards and layouts in the files
    [ Hits: 7538 | Votes: 13 | Rating: 8.52 ]

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