5/8 collinear

Double Extended Zepp Antenna  ^pop - This double extended Zepp provides 3 db gain over a dipole on the band it is designed for. Each side or leg is about 5/8 wavelength long.

Slim Jim 2m Vertical  ^updated - This VHF 145 MHz antenna is easy to build and with no radials. It shows equal gain of 5/8 lambda. It is light weight, you can hang it somewhere (on a tree may be) and work.

6 Meter 5/8 Wave Vertical Antenna - The G3JVL 6 Meter ground plane vertical is a compact antenna that is ideal for portable operations. If needed, it can be disassembled into a very small bundle no longer than the longest element.

Build A 9dB, 70cm Collinear Antenna  ^pop - 70cm, Collinear Antenna From Coax

Directional arrays - About collinear array antennas

Definition of Collinear antenna array - Wikipedia page about collinear antenna arrays

M3FVB VHF 8db collinear  ^pop - Build a 2m 8db collinear for portable use

Build a 2.4GHz Vertical antenna  ^pop - Building a 2.4GHz vertical collinear omnidirectional antenna

Half wave collinear copper jpole - Two meters collinear j-pole antennas made with riggid copper pipe

5/8 Collinear antenna  ^pop - A 5/8 wave stacked j-pole antenna plan

KB1DIG's 5/8th Wave Colinear - Pictures of a PVC 2 meter j-pole antenna

Design your Own Super J Pole - Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole in a collinear design

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.

Collinear Microstrip Patch Antenna - Design of a 869 Mhz Collinear antenna

An improved 40-80 double extended zepp - Article originally published in ARRL compendium by N6LF revisits the classic double extended Zepp to improve pattern and SWR bandwidth. The DEZepp is essentially two end-fed collinear dipoles.

High Gain Collinear AIS Antenna - High Gain Collinear AIS (162MHz) Receiving Aerial by Neal Arundale - M1CHS

The Small Loop Project - AM loop antenna for 75/80 meters band

Double 5 / 8 Flower Pot Antenna - The Double 5/8 is a natural extension of the Single 5/8 and uses a 5/8λ element for both the top and bottom radiators.

Half square antenna - The elevated half square antenna is a very simple antenna that can be constructed from common materials yet gives significant improvement over a dipole at the same elevation. Ground mounted versions of this antenna are commonly used in amateur radio for 75/80 and 160 meter bands

Telewave - Telewave's innovative engineering produces the industry's toughest antenna systems. Yagi, Fiberglass Collinear, and Dipole models are available from 66-2500 MHz. Wattmeters, test equipment,rf power meters, duplexers, filters and cavities, transmitters combiners

Motorcycle mobile: 1/2 or 5/8 wave antenna - Article on mobile ham radio antenna setup

Javascript antenna calculations - Javascript online calculators for dipole 5/8 verticals with radials, and delta loop antennas