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• 2m Quad Turnstile Antenna - The loops are made of 10 mm round aluminum tube. No bending pliers was used to gently bend 90 degrees to obtain a square with 53 cm inner sides. Each loop has an impedance of approximately 100 Ohm. To connect both radiators in phase, a quarter wave long feeder of 100 Ohm is required.
  [ Hits: 207 | Votes: 0 | Rating: 0 ]

• 6 Meter Homemade J-Pole Antenna - A homemade j-pole antenna for six meters band, designed to work on local repeaters, and working on the 52-53 MHz. Includes a list of needed materials and detailed description on assembling the copper tubes used to build this antenna.
  [ Hits: 254 | Votes: 3 | Rating: 4.67 ]

• How to straighten Microbore copper tube - Article and video showing a technique to straighten Microbore copper pipe that is useful in antenna construction. This technique has been implemented to build a Quadrifiliar Helix antenna.
  [ Hits: 326 | Votes: 0 | Rating: 0 ]

• Build a Weatherproof PVC JPole Antenna - After you have build this antenna, you may not need anything else. This article shows how to build a VHF j-pole antenna and how to protect it by inserting it into a PVC tube, the correct way.
  [ Hits: 807 | Votes: 2 | Rating: 8.5 ]

• Horizontal Loop Antenna Experiments - The HF horizontal loop has been around for many years now. This article includes a YouTube video and discusses the reasons for looking at this antenna, its design, and its installation. There are some on-air comparisons against three regular double bazooka (coax) dipoles and the Par SWL End-Fed antenna.
  [ Hits: 926 | Votes: 5 | Rating: 8 ]

• 3 Foot Box Loop Antenna - These antennas are larger versions of the small loop antennas that were part of the cardboard back panel of older AC/DC five tube AM radios. Loop antennas of this type were popular in the very early days of radio. They are still useful today for long distance reception of AM radio stations
  [ Hits: 385 | Votes: 1 | Rating: 2 ]

• Can a dumb radioamateur take part in SSB contest? - By using HamRacer, a windows based voice keyer, also dumb radioamateurs can take part to SSB contests. The unique synthesized PC-based voice keyer for HF and VHF SSB contests. In this video you can assist a real contest with recorded QSO with: SP6OWA, S57O, OK1IEI, 9A1DL, OE1PAB, OK1GTH, 9A1E.
  [ Hits: 476 | Votes: 2 | Rating: 10 ]

• Secret listeners during WW2 - A video about secret listeners ham radio voluntary interceptors during ww2 an extract from The Secret Wireless War DVD
  [ Hits: 611 | Votes: 1 | Rating: 9 ]

• VK5SW, Remotely Controlled Amateur Radio - YouTube - The Internet has changed our lives. Nowadays it is possible to remotely control your Ham Radio station via the Internet.
  [ Hits: 241 | Votes: 0 | Rating: 0 ]

• Ameritron AL-80B Amplifier Pics - A page with pictures of the Ameritron AL-80B Amplifier, including the inside box where is possible to see the 3-500ZG tube capable to provide 800W in CW.
  [ Hits: 311 | Votes: 0 | Rating: 0 ]

• KX2 Tips and Tweaks - Elecraft KX2 tips and tweaks about how to improve your receive audio on the Elecraft transceiver
  [ Hits: 545 | Votes: 1 | Rating: 10 ]

• Yaesu FT857D Mic modification video - Yaesu FT857D No TX Audio, video on reparing and yaesu Mic modification, with audio improvements for SSB and FM
  [ Hits: 1259 | Votes: 0 | Rating: 0 ]
• Yaesu FT-857D Select Knob Wobbles - How to replace - A youtube video instructions on how to replace, the Select knob. Very often this know wobbles after some years of usage and in this video is well documented all passages needed to replace the knob.
  [ Hits: 409 | Votes: 0 | Rating: 0 ]

• TYT MD-2017 Programming - A very useful video that explains how to program the TYT MD-2017 radio. From software download, firmware, codeplug and how to manually configure settings and how to program memories
  [ Hits: 610 | Votes: 4 | Rating: 6.25 ]

• Amplifier Technology: Tube vs. Transistor - An interesting article that compares tube amplifiers versus transistor amplifier.
  [ Hits: 184 | Votes: 0 | Rating: 0 ]

• How to Design an RF Power Amplifier - This video will provide a foundation for understanding how power amplifier circuits work. If you are new to High Frequency Power Amplifier Circuit Design, this is the place to start.
  [ Hits: 674 | Votes: 1 | Rating: 10 ]

• Arduino ACCU Keyer - A simple accu keyer made with Arduino that works well with QRQ CW. Free to download arduino sketch and youtube video demonstration.
  [ Hits: 236 | Votes: 0 | Rating: 0 ]

• A Three-Band One-Tube Novice Transmitter - A homebrew radio transmitter project, based and inspired by the original 30 Watts input on 80 50 and 15 meters band transmitter by W11CP
  [ Hits: 345 | Votes: 2 | Rating: 10 ]

• PlasmaTV QRN Eliminator - An improved version of DK9NL QRM Killer, with dedicated noise sampling antenna for completely filtering of plasma TV rattle on HF bands
  [ Hits: 899 | Votes: 0 | Rating: 0 ]

• What is a Vacuum Tube - Read all the key details about Vacuum Tubes or Thermionic Valves that provided the foundations for today's electronics technology.
  [ Hits: 281 | Votes: 2 | Rating: 10 ]

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