top hat antenna

top hat antenna

Antennas : 160M

• A Lowband Antenna that is Almost Free - The Shunt-fed Tower, an effective Low Band Antenna, uses your beam as a capacitive top-hat and only needs a simple feed network and a good ground system to work DX on 80M and 160M.
  [ Hits: 18749 | Votes: 4 | Rating: 7.75 ]

• Directional Helical Antenna - This antenna is intended for the 20-meter Band. There are two Voltage Fed Helical Dipoles, made with 2 slinky that fed with phase shift in 90 degree
  [ Hits: 1087 | Votes: 1 | Rating: 8 ]

• 20 meter short loaded vertical antennas - Loading is a way to lower the resonant frequency of an antenna radiator. This technique is typically used in antennas that have radiating elements that are too short for the desired resonance frequency. In this excellent article the author experiment loaded vertical dipoles for 20 meters band
  [ Hits: 232 | Votes: 1 | Rating: 9 ]

• Umbrella Antenna for 80 Meters - An umbrella antenna is basically just a vertical monopole antenna that is top-loaded with a large end-hat. The hat consists of a number of radial wires that slope away, downward from the top of the antenna.
  [ Hits: 925 | Votes: 0 | Rating: 0 ]

• 10-80 Slinky Dipole - A slinky dipole antenna that covers almost all HF bands mede with a flexible 90-turn metal spring by N4SPP
  [ Hits: 1377 | Votes: 7 | Rating: 6.86 ]

• Broadcast Antennas on Buildings - When a broadcast antenna is to be placed on top of a building, there are special problems of feeding and grounding. The radiator is usually electrically short, that is, much less than one-quarter wavelength high.
  [ Hits: 358 | Votes: 2 | Rating: 10 ]

• Cheap antenna to make from 160m - 6m  ^pop - The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD
  [ Hits: 46513 | Votes: 28 | Rating: 7.61 ]

• Magnetic Loop 80-20 by N4SPP - A transmitting magnetic loop antenna that can cover from 80 to 20 meters band with a lot of experiments on coupling tecniques, and a pictures by N4SPP
  [ Hits: 2287 | Votes: 10 | Rating: 5.9 ]

• A Simple 2 Element Quad Antenna for 10 meters - Quads beams consist of 2 1 wavelength (approximately) loops, ordinarily arranged so that one is the driven element and the other is the reflector. In this project author explains how to build a two element Quad Antenna for the 28 MHz.
  [ Hits: 273 | Votes: 1 | Rating: 7 ]

• Balcony Antenna for 7 10 14 MHz - A project for a balcony antenna that works on 7 10 14 MHz made by 2 PVC tubes coiled with insulated copper wire, a solution for restricted lots.
  [ Hits: 2480 | Votes: 2 | Rating: 9.5 ]

• About Lightning Protection - What You Should Know About Lightning Protection by Joseph H. Reisert
  [ Hits: 3121 | Votes: 1 | Rating: 8 ]

• How eliminate RFI Interference in Off Grid Solar PV Systems - How to solve RFI problems caused by the charge controller, which is a PWM type charge controller, that generates a lot of EMI interference
  [ Hits: 226 | Votes: 1 | Rating: 5 ]