out of band operation

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out of band operation

7 links

Antennas : Portable

  • A Compact and Stealthy Field Portable Antenna  new - In the quest for an ideal field portable antenna, the author recounts experiments involving various wire configurations. While a previous candidate, a 41ft random wire, proved effective but lacked stealth, the search led to a surprising rediscovery of a design previously rejected—the Rybakov Antenna. With a focus on simplicity, rapid deployment, and multiband capability, the author explores the versatility of a 26ft Rybakov, avoiding the halfwave trap. The article delves into the antenna's performance and its potential as a discreet, resonant solution for field operations, addressing the challenges encountered during a POTA activation. Additionally, the Unun/Balun design used in conjunction with the Rybakov Antenna is discussed, providing insights into achieving a balanced system.
    [ Hits: 77 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : Technical Specialty
  • Southeastern VHF Society - A not-for-profit organization incorporated to promote ham radio operation on the bands above 50 MHz in the southeastern United States.
    [ Hits: 293 | Votes: 0 | Rating: 0 ]
  • Southeastern VHF society - The Southeastern VHF Society (SVHFS) is a not-for-profit organization incorporated to promote amateur radio operation on the bands above 50 MHz in the southeastern United States.
    [ Hits: 356 | Votes: 0 | Rating: 0 ]
Operating Modes : 50 Mhz
  • Guide to 6 Meter DXing - Getting Started on the Magic Band is a very exaustive article about operating the six meters band. It covers several aspects of operations, techniques, tips and guidelines on getting started on the six meters band.
    [ Hits: 225 | Votes: 0 | Rating: 0 ]
Radio Equipment : VHF-UHF Handhelds : Wouxun KG-UV8D
  • Wouxun KG-UV8D Cross-Band Repeater - Crossband repeat operations on the Wouxun KG-UV8D dual band multifunctional two-way radio. This demo explains differences in the cross band repeater functions of the KG-UV8D.
    [ Hits: 921 | Votes: 1 | Rating: 7 ]
Technical Reference : Repeater
  • Arduino Repeater Controller - This blog article introduces an updated repeater controller project utilizing the Arduino UNO. It includes a CW identifier, and the ID message can be customized using hex codes. The author offers a Windows command line program for easier message coding and provides a link for download. The controller features three adjustable timers for IDer, Timer-out, and Squelch-tail. The article also mentions the use of an audio switch to control audio levels between the receiver and transmitter. Detailed instructions and code files are available on the author's website for both version 1 and version 2 of the Arduino repeater controller. The project aims to enhance repeater functionality and audio management in ham radio operations.
    [ Hits: 48 | Votes: 0 | Rating: 0 ]
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: 134 | Votes: 5 | Rating: 7.8 ]
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