round antenna

219 links - and 1 categories

Ground System on a 160M vertical - Ground system measurements on a 160 M vertical by Rudy Severns N6LF
[ Hits: 1913 | Votes: 1 | Rating: 10 ]
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 ]

7Mhz Vertical antenna - The secret with this antenna is to install as many radials as you can around the base of the antenna, they can be anything from 1/8 wave or longer.
[ Hits: 24126 | Votes: 15 | Rating: 4.14 ]

50MHz J-Pole Antenna ^pop - Need a general purpose antenna on the magic band? The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarised antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
[ Hits: 33824 | Votes: 18 | Rating: 7.05 ]

Beverage antennas notes - How to build a beverage antenna. How to deploy a BOG antenna for your next SWL DX-ing activity. Give it a try and follow the orientation tips for this bi-directional antenna.
[ Hits: 15827 | Votes: 9 | Rating: 4.56 ]
Beverage Antenna Construction - Types of beverage wires, choose best supports and insulators, multiple antennas at one feedpoint, all well documented with photos and exaustive explanation. This article offers insights on building Beverage antennas for optimal reception. Key takeaways include using strong wire (copperweld or electric fence), proper termination, and a good grounding system (multiple copper rods). The author recommends maximizing antenna length and orienting it towards desired stations. For best results, utilize an antenna tuner and experiment with termination resistors.
[ Hits: 15519 | Votes: 9 | Rating: 8.45 ]

End-fed vertical j-pole and horizontal zepp vertical - There are many incorrect ideas and claims surrounding end-fed vertical antennas (like the I-Max 2000), end fed horizontal antennas, Zepp, and J-pole antennas. This article describes it.
[ Hits: 8782 | Votes: 4 | Rating: 6.75 ]
How to make an end-fed antenna work ^pop - Here is a sure fire way to make end-fed halfwave antennas fed with a 50 ohm coupler work - without long radials, grounds, chokes, voodoo.
[ Hits: 43964 | Votes: 30 | Rating: 6.71 ]

J-Pole theory ^pop - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
[ Hits: 30319 | Votes: 26 | Rating: 6.87 ]

Long Loopstick Antenna - Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a long wire or ground.
[ Hits: 4376 | Votes: 1 | Rating: 10 ]

Antennas and Grounds for apartments - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna
[ Hits: 23167 | Votes: 12 | Rating: 5.75 ]

Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna
[ Hits: 1867 | Votes: 1 | Rating: 3 ]
Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver' s output power verses the portion of that power reflected by the antenna system
[ Hits: 8719 | Votes: 8 | Rating: 4.75 ]
Amateur Radio Antennas: Ground Theory - Perfect ground vs. poor ground. What is the difference? How does the ground influence the DX-gain?
[ Hits: 6683 | Votes: 0 | Rating: 0 ]

Short Vertical Antennas and Ground Systems - This article describes how an effective ground system can be produced for a short vertical antenna.
[ Hits: 23394 | Votes: 11 | Rating: 6.08 ]
6m vertical antenna - G3JVL Six meters ground plane vertical is a compact antenna that is ideal for portable operations on 50 Mhz
[ Hits: 12376 | Votes: 20 | Rating: 6.96 ]
Groundplane antenna - Short guide to build your own groundplane antenna, includes radial measurements fro warc bands
[ Hits: 5427 | Votes: 2 | Rating: 10 ]

Dipole Height - How High should my Dipole be? Dipole Antennas - the Effect of Height Above Ground
[ Hits: 7235 | Votes: 9 | Rating: 7.67 ]

Yagi Sterss - A full featured, graphical, user friendly program that performs structural analysis on horizontally polarized yagi antennas constructed from round tubing. YS can work in Imperial or Metric Units, and is likely to tell you more about a yagi antenna than you ever thought you needed to know. YS has been used by commercial manufacturers and premier station builders for over a decade by Kurt Andress, NI6W
[ Hits: 5849 | Votes: 1 | Rating: 7 ]

K1TTT Technical Reference - Technical reference about Accessories, Amplifiers, Antennas, Cable and Connectors, Filters, Geography, Grounding, Gunk, Matching Networks, Projects, Propagation Info Radios, RFI/EMI, Rotors, Station Setup, Towers.
[ Hits: 5150 | Votes: 6 | Rating: 6.33 ]