current feed

The Impact of Current Distribution on Array Patterns - Technical Correspondence, QST, July 1990 - Why even "perfect" phased array element currents don't produce perfect patterns.

The simplest phased array feed system that works - How to calculate "phasing line" lengths that actually work.

A better antenna-tuner balun  ^pop - Which balun to use? The hybrid balun promises advantages over both voltage and current baluns by ZS1AN

The 9:1 balun  ^pop - Antenna special on hard-core-dx.com

Magic T combiners splitters - The magic "T" combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads. It is not a magic bullet.

Detuning Towers - The goal of detuning is not to avoid resonance, but rather to minimize re-radiation and/or current in the interfering structure.

Antenna Feed Lines for Portable Use - Why twinlead isn't necessarily a low loss feed line.

Antenna Transmission Line Power Splitters - Several ways of splitting power to feed two like (50 ohm terminal impedance) antennas.

Choke balun  ^pop - Essentially, a choke balun is designed to 'divorce' your antenna from the feed line. if your feed line is coaxial cable then you don't want it to be part of your antenna. you want to be able to deliver all your power to the radiator itself, i.e. 'the antenna'. a choke balun does this admirably

EA6VQ - Open wire feeding and baluns - Discussion about open wire feeding and baluns took place in the Moon-Net reflector.

Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.

K5OE, 70 cm Quagi Antenna - An AO-10 antenna by K5OE, this design is optimized for 436.8 mHz with a 50 Ohm feed

A Modern Thermocouple Ammeter - Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF

A Tincan feed for 2.45Ghz - Construction details for a simple but effective antenna for 2.45Ghz wireless lan use.

Dish 802.11 Wireless Networking Antenna - This antenna modification is for the IEEE 802.11b networking protocol that operates at 2.4 GHz. It can be scaled easily to the 5 GHz frequency used by IEEE 802.11a by simply scaling the dimensions on the feed can and the excitation antenna to 2.4/5 = 48% of the dimensions shown above.

WK8L's ATV Page - Includes links and documentation on wifi antennas, 2.4 GHz Coffee Can Feed Antennas

DX Calendar by dxwatch.com - This is a calendar for current, future and past DX activations

Tucson-area police radio scanner - Launch the StarNet radio scanner to listen to Tucson-area police, fire and other agencies radio transmissions.

Boston Fire Department Live  ^pop - Listen to Boston Fire Department live scanner feed

New York Long Island Scanner Pages  ^pop - New York / Long Island Scanner forums, chat, and live scanner feeds of Nassau County Fire Departments. Site registration is needed to listen to the live feeds

Salina Abilene Manhattan Live Scanner Priority listing - This page is a live audio feed of public safety and business radio communications in and around the Salina, Abilene and Manhattan, KS area. Audio source is a Radio Shack Pro 2006 scanner. Feed is with Windows Media Encoder. Your requirement is Windows Media Player version 9 or better.

Orlando Florida live scanner  ^pop - Public safety scanner feed from Orlando Fl

The KO6YD Screwdriver Antenna Memory - The Screwdriver Antenna Memory (SAM) product is designed to enhance the mobile antenna commonly called the "Screw Driver". It replaces your current control unit and provides an automated memory feature that eliminates the visual coil tuning method commonly used.

Watts Unlimited - Engineering Solutions for Unique Problems. Manufacturer of high Voltage, high Current, high Power Power Supply

Constant Current Battery Charger - Constant Current Battery Charger circuit project