trap vertical roof

10 Meter Wire Jpole - A vertical en-fed zepp for 28.4 Mhz by N1LO

80/160 Dual band vertical - This 80/160 meter antenna is constructed from six 12 foot aluminum tubes to form a slip-up mast antenna some 60 feet high by K0RWU

Build a hanging dipole for two metres - Described here is a simple omnidirectional, vertically-polarised dipole for two metres

EZ-Lindenblad Antenna for 2 Meters - This easy to build antenna works well for satellite or terrestrial communication, horizontal or vertically polarized by Anthony Monteiro, AA2TX QST Article

TLV40m antenna - Top Loaded vertical antenna for 40m Band with elevated radials

Top loaded vertical - Vertical Antenna for 40m Band with elevated Radials Top Load is a Mesh 2 x 1 meter (Netz 2x1m) enamelled wire 0.5 mm diameter (CuL 0,5mm)

2 Elements revesible verticals antennas - 2 element reversible verticals, small footprint, big results.

The 7-Hex Driven Vertical Array - The array consists of 7 vertical antennas arranged as 6 verticals in a hexagon shape plus 1 additional vertical in the center of the hexagon

The Simple Collinear - Wherever there is a need for a vertically polarized omni-directional antenna with gain, a collinear is used. The vertically polarized collinear takes the form of two or more half waves in-line and in-phase, resulting in an omni-directional pattern with maximum radiation near the horizon.

Omni-Gain Vertical Collinear Antenna - This rugged antenna, an omnidirectional collinear, is capable of surviving harsh environments. It's a good choice for repeater installations and can be top, or side mounted to the tower by WA6SVT

802.11 2.4Ghz Low-Power Vertical Antenna - A 2.4Ghz low-power 5dBi vertical collinear antenna for 802.11 applications

Home-brew Compact 6dBi Collinear Antenna  ^pop - This page details the construction of an easy-to-make collinear 360 degrees omni-directional, vertically polarised, antenna for 802.11b/g wireless networking.

Feeding an End-Fed Antenna  ^pop - End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.

40m broadband vertical antenna - A loopy loop loaded vertical antenna operating range 7.0 to 7.3 MHz by S. C. Chuck Smith, WA7RAI

6-Band Windom antenna  ^pop - Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio (ham) bands

N3OX Multiband vertical - This vertical antenna consist of a 18 meters telescopic pole and allow operations from 160 to 30 meters band, project by Daniel Zimmerman N3OX

Homebrew Buddistick 2007 - W3FF article about the buddistick portable vertical antenna in a PDF file

HB9MTN C-Pole Porable antenna - A vertical monoband that's small, light and portable, needs no counterpoise and performs as well as a home antenna

Quarter Wave Verticals - One of the most useful antennas in the repertoire is the Marconi or quarter wave grounded vertical antenna. Its invention made it possible to halve the length of antennas, simplifying communications, especially at HF and below.

Coax Traps from a Modeling Perspective - About Coax Traps, NC4FB examine the operation of coax traps through modeling.

Backyard 7 Mhz Vertical - A vertical antenna for 40 meters band by PA5MW

A Simple But Effective Low-Band Base Antenna - A vertical antenna for Six Meters band

Troubleshooting Traps - This article refers mainly to the old Cushcraft 1/4 wavelength AV series of antennas (12AVQ, 14AVQ etc) hence the references to radials. The R series (R5, R7 etc) are 1/2 wavelength antennas, and the radials are NOT 1/4 wavelength resonant.

ABCVacuumTubes.com - ABC Vacuum Tubes is dedicated to providing Ham radio, amateur radio operators, antique radio enthusiasts, audio professionals and hobbyists the ability to choose from an inventory of over 3.5 Million Vacuum Tubes on hand under one roof.

Quarter wave vertical Designer - Want to build a Quarter Wave Vertical, this DOS program shows you how.