239 feed thru

Dual Band 40m/17m dipole - A center feed dual band dipole for 40 and 17 meters by W5DXP

Vertical antenna for 20-15-10 m  ^pop - This is a vertical multiband antenna made up of several aerial elements lambda/4 length, feeded with just a coaxial cable in French.

The Cycloid Collinear, a CP Omni - This paper describes a wide band, high gain, multi-element cp omni with a single 50 ohm feedpoint with instructions for building a 2 and half element cycloid collinear for 2 meters.

Small Transmitting Loop Antenna Calculator Priority listing - A free online calculator for making all of the calculations required to design and build small transmitting loop antennas, also known as magnetic loops by 66pacific.com

The Ugly Balun - A 1:1 choke balun for 160 thru 10 meters using one continuos lenght of coax to rig.

4:1 balun for 160 to 10 meters  ^pop - Articke By Clay Wynn

The HB9CV antenna - Basics and principles of the HB9CV antenna by Rudolf Baumgartner. This antenna join electric advantages of the two elements direct feeded aerials with the mechanical advantages of the Yagi antennas, in French.

Balanced Self Matching Feed Line System - KE4UYP designed this Balanced Self Matching Feed Line System for people who want the very best feed line they can have on a Monobanded antenna

Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes

Noise Reduction on 40m Priority listing - DF9CY implementation of W1HIS suggestion of inserting a common mode choke into a 40m antennas feed-line.

Open-wire Feedline - Homebrew Light-weight Open-wire feedline for Portable Ops by N5ESE

The Merits of Open Wire lines - This article is devoted to pointing out the advantages of open wire lines and discussing a few particular applications where they might be the preferred choice to feed the antenna.

Open Wire Feed Line a second look - Put up the longest dipole you can fit, feed it with open wire line, connect it to the balanced output of your tuner and—poof! Instant multiband antenna. Is life really that simple? By Paul Danzer, N1II

Some plain facts about multiband vertical antennas - There is considerable confusion as to what exactly a multiband vertical antenna is. The confusion concerns the method of feed, how much mismatch one can expect, how many radials are required, how the particular antenna is built for multiband use, plus some other points.

All Band inverted L antenna - The inverted-L, using parallel feedline and an ATU, is an antenna with excellent potential as an all-band. Antennex article by W4RNL

Scan Merrimack Valley - This site contains the Scan Merrimack Valley Fire Feed which has live audio from Area Fire Departments in the Merrimack River Valley, Massachusetts.

Norfolk police radio feed - Norfolk police department live radio by oceanviewcommunications HRConnect

Dauphin co. PA live feed - Dauphin County Pennsylvania (PA) PD Fire Scanner

Butte County California Public Safety Scanner - Live scanner feed from Butte County, paradise/upper ridge, chico , california public safety

Boston Police Radio Scanner - Broadcastify listen live audio feed from Boston Radio Police Fire and EMS

Lycoming County, PA Scanner Feed - County police dispatch, Williamsport police dispatch

Nevada Reno Live Police Scanner Stream - Live streaming police scanner feed from Reno Nevada USA

Tuolumne County Incident Feed - Tuolumne County California Incident Feed Live scanner stream for police, fire and emergency

Setting up a live broadcast on the internet - This tutorial will teach you what you need to know so you can broadcast your live radio feed over the Internet yourself.

Converting SSB CB to LF - Modified transverter for converting SSB CB to LF for thru-the-earth voice communications