am antennas

am antennas

Pages: [prev] ... 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 [next]

• Short Top Band Antenna - A shortened 160 meters band antenna for hams who do not have 260 ft of space, based on a open-wire-fed short dipoole
  [ Hits: 1579 | Votes: 2 | Rating: 10 ]
• 160M Folded Counterpoise - An FCP is not magic. It has no gain. An FCP improves an antenna system by replacing more loss with less loss. Some have been able to erect better wires in the air because the small size of the FCP allowed better placement of the antenna.
  [ Hits: 252 | Votes: 0 | Rating: 0 ]

• Quick antenna length calculator - An excel spreadsheet that in a really simple way checks how much to trim your antenna elements. Download the xls file and watch the presentation video include in this page
  [ Hits: 772 | Votes: 0 | Rating: 0 ]

• Wire Antenna Design Lengths - The Classic Numbers for All Types of Wire Antennas at HF. Wire antennas need to be made a bit long and cut to resonance. They are affected by height above the ground and surrounding objects. In order to get an idea of the right place to start, certain formulas are generally accepted.
  [ Hits: 331 | Votes: 1 | Rating: 7 ]

• Improving the Super-J - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. As many attest, there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. The Super-J has very little separation between the two half-wave radiators.
  [ Hits: 972 | Votes: 2 | Rating: 5.5 ]

• 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 ]

• ZigZag Antenna - VHF/UHF unconventional antennas - An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.
  [ Hits: 746 | Votes: 2 | Rating: 8.5 ]

• Wire antennas for ham radio - A collection of drawings of most popular wire antennas for hf ham radio bands
  [ Hits: 739 | Votes: 2 | Rating: 10 ]

• Simple Gain Antennas for the Beginner - You do not need to invest an absurd amount of money to build a beam type of antenna. Good performance can be obtained with simple antennas made from some very ordinary materials. QST article
  [ Hits: 1061 | Votes: 4 | Rating: 6.5 ]
• 3 Element Yagi Antennas for 144 MHz SSB-CW - A great and efficient monoband VHF portable antenna. The article consist of two version of a 12.5 Ohm 3 elements yagi beam antenna plans for the two meter band, a full sized and a shortened version expecially designed for the SSB and CW on 144 MHz.
  [ Hits: 427 | Votes: 4 | Rating: 8 ]

• IV3ONZ's Ham Radio Blog - Ham radio activity and homebrew from Italy with some interesting article on QRSS, decoding interfaces, APRS and antennas
  [ Hits: 200 | Votes: 2 | Rating: 10 ]

• CQ Antennas - Antenna insulators manufacturer, CQ Antennas provides great quality amateur radio gear to amateur radio operators and trusted emergency preparedness pros at a great price
  [ Hits: 221 | Votes: 0 | Rating: 0 ]

• HyEnd Company - HyEnd is a dutch amateur radio antenna manufacturer. Makers of the popular HyEndFeed Antennas, produce Baluns, bandpass filters and selle Line isolators, coax cables and connectors.
  [ Hits: 197 | Votes: 0 | Rating: 0 ]

• Active Antenna Amplifier - Manufacturer of amplifier for small magnetic and electric receiving wideband antennas, and variable delay line kit for active antenna phased arrays
  [ Hits: 279 | Votes: 0 | Rating: 0 ]

• Sommer Antennas - Sommer Antennas has been a manufacturer and producer of quality amateur radio antennas and antennas for professional use for more than 20 years.Developed by DJ2UT in Germany, our beams were first introduced to the U.S. market at the 1984 Dayton Hamvention
  [ Hits: 251 | Votes: 0 | Rating: 0 ]

• Status Quad - Amateur radio Quad Antennas manufacturer based in Italy produce HF and VHF Quad antennas, and spare parts.
  [ Hits: 454 | Votes: 0 | Rating: 0 ]

• James Pole Antenna - Hand-tuned, J-Pole Antennas. The James Pole Antenna is constructed of 1/2 inch Type M copper pipe, soldered together and capped on both vertical elements. Each Antenna is tuned for center frequency.
  [ Hits: 218 | Votes: 0 | Rating: 0 ]

• Remotely Controlled Camera by VK5SW - Remote viewing can be useful for Hams, in example remotely viewing antennas during a storm.
  [ Hits: 179 | Votes: 0 | Rating: 0 ]

• Mod for Acom 1000 amplifier - The problem originates by improper TXOUT-to-RF timing (RF transmission exists still after a TX-EN prohibition), combined by too long decay of their CW pulses.
  [ Hits: 511 | Votes: 0 | Rating: 0 ]

• Delta Electronics - Delta Electronics, Inc. NY USA, family owned and operated selling all varieties of consumer electronics including 10 meter amateur radios, antennas, accessories, microphones, cw transmitters, coax cables and more
  [ Hits: 326 | Votes: 0 | Rating: 0 ]

Pages: [prev] ... 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 [next]