length

length

Pages: [prev] 1 2 3 4 5 6 7 8 9 10 [next]

• Shortened dipole for 10 & 40m bands - A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.
  [ Hits: 4138 | Votes: 1 | Rating: 1 ]

• 160 meter linear loaded Inverted L antenna - The total length of the inverted L is 240 feet, which is 7/16th of a wave length long. It has a 92 foot horizontal linear load section 1 foot above ground that terminates into a home-brewed parallel network tuner by KN4LF
  [ Hits: 4162 | Votes: 5 | Rating: 5.6 ]

• Vertical antenna for 20-15-10 m - This is a vertical multiband antenna made up of several aerial elements lambda/4 length, feeded with just a coaxial cable in French.
  [ Hits: 23578 | Votes: 20 | Rating: 5.2 ]

• Multi-Band Super Mini Loop Antenna - How to make the Super antenna. To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band
  [ Hits: 23211 | Votes: 8 | Rating: 6.95 ]

• Quarter Wave GP Antenna Calculator - Amateur quarter wave ground plane antenna calculator, calculate vertical and radial length
  [ Hits: 4842 | Votes: 24 | Rating: 6.04 ]
• Antenna wire catenary calculator - This is a simple calculator for solving the antenna wire catenary between to end points given the design wind speed, mass per unit length of the wire, wire diameter and Gross Breaking Strength of the wire.
  [ Hits: 2898 | Votes: 8 | Rating: 2.75 ]

• Bobtail dipole - Bobtails are vertical arrays that look like the letter "E" turned 90° clockwise onto its tails. They have 3 quarter wave vertical elements and are one wavelength long. The Half Square is a shortened Bobtail- it has 2 quarter wave vertical elements and is a half wave long.
  [ Hits: 1913 | Votes: 0 | Rating: 0 ]

• Folding the Dipole - The half wave dipole antenna is a simple and practical antenna model that consists of a half wavelength long centre fed conductor.
  [ Hits: 2377 | Votes: 4 | Rating: 7.5 ]

• All About Ham Radio Ladderline - Ladder Line Myths, Line Types, Spacing and Impedance, Length by KV5R
  [ Hits: 1152 | Votes: 2 | Rating: 9 ]

• TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.
  [ Hits: 787 | Votes: 0 | Rating: 0 ]

• Coaxial antennas - G3TXQ study on coaxial cable demonstrate that it can reduce an element's length by something approaching the Velocity Factor of the cable
  [ Hits: 1290 | Votes: 1 | Rating: 10 ]

• W5JGV Mobile Antenna - A High Efficiency Extended Length Mobile Antenna The antenna itself is 3.42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip.
  [ Hits: 4123 | Votes: 5 | Rating: 6.2 ]

• The Grid Yagi for 144 Mhz - The Grid Yagi (or Grid Quad) is a high performance yagi antenna that can be built with readily obtainable inexpensive materials. Described here is a 6 element 2 meter version with a boom length of about 1 wavelength, shown
  [ Hits: 2504 | Votes: 2 | Rating: 5 ]

• UHF Yagi for AO-40 - Based on DL6UW Yagi antenna's design-formula The forward gain is 13.6 dBi (about 11.5 dBd) and it's pretty small, about 1,5 m in length
  [ Hits: 2468 | Votes: 4 | Rating: 6.75 ]

• Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length
  [ Hits: 3765 | Votes: 9 | Rating: 6.22 ]

• VHF 5/8wave vertical antennas - By Guy, de ON6MU, At VHF, both the 1/4-wavelength monopole and the 5/8-wavelength monopole antennas are widely used.
  [ Hits: 1937 | Votes: 4 | Rating: 5.5 ]

• W3DZZ multiband dipole - The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters
  [ Hits: 10472 | Votes: 20 | Rating: 6.9 ]

• The Zeppelin antenna - It consists of a radiating wire with a length equal to the half-wave of the fundamental frequency for which the antenna is cut.
  [ Hits: 2232 | Votes: 2 | Rating: 8 ]

• Shortest Vanity Callsigns - This is a service for finding the shortest available vanity callsign in your amateur radio class. It filter through all possible callsigns and provide just the unused ones weighted by their length in morse code or their actual number of letters.
  [ Hits: 2991 | Votes: 63 | Rating: 7.37 ]

• Interdigital bandpass filter designer - Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength
  [ Hits: 1117 | Votes: 6 | Rating: 7.67 ]

Pages: [prev] 1 2 3 4 5 6 7 8 9 10 [next]