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• Common mode currents - Common mode currents can flow in all sorts of systems, not just antenna feed lines. This article explain how Common mode noise can be isolated from the desired signal
  [ Hits: 316 | Votes: 1 | Rating: 8 ]

• HF Skeleton Slot - An antenna system with a difference. It is a cheap and simple to make antenna, can be built with three bamboo spreaders and wire
  [ Hits: 1100 | Votes: 2 | Rating: 9 ]

• A Trolley System for Raising Antennas - Raising large Yagi antennas can be a challenging project. A trolley system will make the job a lot easier
  [ Hits: 1251 | Votes: 1 | Rating: 9 ]

• Courage Center Handiham System - Ham Radio & technology for people with disabilities
  [ Hits: 220 | Votes: 3 | Rating: 9.67 ]
• The Handi-Ham System - Where abilities and disabilities become possibilities
  [ Hits: 279 | Votes: 1 | Rating: 8 ]

• Handiham Podcast - Ham radio for people with disabilities. A weekly podcast from the Courage Handiham System
  [ Hits: 433 | Votes: 0 | Rating: 0 ]

• Radio Structures - Manufacturers and Installers of Masts, Towers, Antenna systems, Trailer Masts, Lattice Masts and Bracketry. Radio, CCTV and lighting masts, tower Refurbishments, safety surveys, mast tower inspections, safe to climb certification
  [ Hits: 753 | Votes: 3 | Rating: 10 ]

• Bushcomm HF Antenna Systems - Australian manufacturer of HF Communications Antenna Systems for Military, Comercial, Mining & Amateur Radio
  [ Hits: 557 | Votes: 1 | Rating: 2 ]

• Scan Antenna - Scan Antenna supply precision antennas to some of the world’s most advanced, market leading companies. Their antennas fit in satellite voice/data, mobile/wireless GSM, GPS, marine/land based radio and other specialty systems.
  [ Hits: 291 | Votes: 0 | Rating: 0 ]

• Ingnition notes on RFI by K0BG - Removing noise caused by ignition and injection systems
  [ Hits: 335 | Votes: 0 | Rating: 0 ]

• RFinder Worldwide Repeater Directory - The only worldwide amateur radio repeater directory. Supports Android, iPhone, web, RT Systems, CHIRP GPS enabled. AvMap, Garmin, TomTom
  [ Hits: 705 | Votes: 3 | Rating: 4 ]

• HFRadioSales.au - Specialists in (second hand/used) HF Radio & Antenna Sales, Service, Repair, Spare parts of Codan / Barrett / Qmac SSB equipment, and a licenced dealer for new sales of Barrett Communications Radio & Antenna Systems based in Australia
  [ Hits: 1796 | Votes: 0 | Rating: 0 ]

• RF Toolbox - A MacOSX antenna design and electronics/electrical tool package. It is a multipourpose application that allow antenna design and comomn calculations
  [ Hits: 670 | Votes: 1 | Rating: 1 ]

• CloudRF - Online radio planning system, allow you to generate accurate radio frequency predictions for anywhere on earth
  [ Hits: 9151 | Votes: 42 | Rating: 4.81 ]

• MDSR - Modulator-Demodulator Software Radio A radio communication system where modulating and demodulating components are implemented using software on a personal computer or other embedded computing devices using by a converter.
  [ Hits: 914 | Votes: 30 | Rating: 7.93 ]

• Hellschreiber App - Display and Send Hellschreiber On Your iPhone and iPad - iPhone / iPad app to send and receive Hellschreiber
  [ Hits: 546 | Votes: 0 | Rating: 0 ]

• Mark III Antenna Launcher - A simple and effective antenna launcher system by AA4LR
  [ Hits: 528 | Votes: 1 | Rating: 9 ]

• CW Beacon kit - CW Beacon kit by Expanded Spectrum Systems
  [ Hits: 731 | Votes: 1 | Rating: 1 ]

• Using 75 Ohm CATV Coaxial Cable - Tipo on using common 75 ohm coax with 50 ohm ham radio systems
  [ Hits: 592 | Votes: 1 | Rating: 8 ]

• RTL-SDR - Yahoo Group - Discussion group about RTLSDR Dongles, software support and hardware mods for these Software Defined Radio systems based on RTL2832U
  [ Hits: 413 | Votes: 2 | Rating: 9 ]

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