matching section

matching section

Antennas : Antenna Calculators

• Full Wave Loop Antenna Calculator  ^updated - Use this online calculator to determine the length of a full-wave loop antenna from the frequency. Both metric and English units of measurement are supported. Quarter-wave matching section lengths are also calculated.
  [ Hits: 930 | Votes: 7 | Rating: 6.14 ]
• Extended Double Zepp NVIS Antenna Calculator - Extended Double Zepp measurements for all ham bands, and online calculator. The antenna is constructed much like an ordinary Dipole antenna but with 5/8 Wavelength Elements matched with an added Impedance Matching Section of balanced feed line
  [ Hits: 125 | Votes: 3 | Rating: 7 ]

• The Story of the Broadband Dipole - A dipole can be broadbanded by a number of techniques including by matching with resonant sections of transmission feed lines.
  [ Hits: 411 | Votes: 0 | Rating: 0 ]

• 20m Half-Wave End Fed - A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
  [ Hits: 1848 | Votes: 7 | Rating: 8 ]

• Wireman-J-Poles for 2m-40m  ^pop - J-Poles with Wireman-cables for the quarterwave matching section, working on VHF and HF bands
  [ Hits: 27084 | Votes: 252 | Rating: 8.37 ]

• Some Useful ZS6BKW Modifications - The ZS6BKW antenna evolved from an optimization of the G5RV antenna. The SWR on 80m is too high and the 40 ft ladder line matching section is a little too long on 17m and a little too short on 10m
  [ Hits: 1028 | Votes: 3 | Rating: 4 ]