power led

The G4ZU Spider Beam or Skypper - This 3 elements wire Yagi comes along in a great variety of names. On the 11 meter is calle Skypper due to the manufacturer Alex 1SD019 On Ham bands is called Spider beam or G4ZU.

Low Power 4:1 Balun - Build a Low Power 4:1 Balun , by Charles Greene, W1CG with full-color, full-resolution graphics from the pages of QRP Homebrewer

Dualband EH Antenna - A detailed project of a dual band EH antenna by F5IXU in french

The KJ5VW 20 Meter Mini Yagi - 2 element mini-yagi that weight less then 15 pounds, cost less than $30 dollars, can be disassembled into four-foot lengths by Gary R. Hanson, KJ5VW

Link-Coupled Antenna Tuners - W4RNL tutorial on on inductively coupled (link-coupled) antenna tuners

LT1F BadPower - Bad power -LT1F site of the circulo de radioaficionados rosario Argentina

North America VHF UHF Beacons - List of north america beacons transmitting on vhf and uhf bands compiled by WZ1V

OK0EF QRP Beacon - 10134 kHz beacon power is 500 mW Male Pritocno village, locator JO70BC.

VR2UIX Blog - This Blog is about the Hong Kong Radio Amateur Station VR2UIX, rigs, antennas, accessories, DXing activities, HAM resources, knowledge, theory, practices, management, information technology and personal interests.

K3LV Lebanon Valley Society of Radio Amateurs - LVSRA has been affiliated with the American Radio Relay League since 1930 and was incorporated in 1977 for the purpose of information exchange, to promote radio knowledge. Lebanon County Pennsylvania

GlobalTuners - GlobalTuners provides access to remotely controlled radio receivers over the internet. You can listen to ham radio, shortwave radio, air traffic control, airband, ACARS, airports and much more. Tune remotely controlled receivers from all over the world with your browser and listen live.

Wholesale Parts of Florida LLC - Manufacturers of the world's most comprehensive and powerful line of antennas. TRAM antennas, CB VHF UHF Satellite Marine GPS antennas, masts and mounts.

Building a Low Power Beacon for 6m - by Ken Neubeck WB2AMU

Power Port - Handheld Radio Pouches, Power Supplies, Solar Recharging Systems, GPS Navigation Devices and 12V Accessories

QRO-Parts.com - Svetlana tubes also Russian capacitors,vacuum and coaxial relay, for RF Power Linear Amplifier builders. Amateur-Radio, Broadcast. Full Online Catalog.

D-PRS Interface - D-PRS Interface is written to provide a universal interface between APRS clients and an Icom D-STAR enabled radio with a low speed port.

144 Mhz power amplifier 4CX250B - This page provides information on the design and practical implementation of a rather inexpensive 144 MHz high power amplifier using a pair of ceramic tetrodes type 4CX250B by LA0BY

A 20W Amplifier for 2 meters - VU2RAR basic VHF power amplifier suitable for 144-146 Mhz output power can vary from 3 to 25 Watts.

Anderson PowerPole Connectors - This standard assures that any radio can be connected correctly to any power supply. Here you can find some assembly notes

1.8-54 Mhz Low pass filter - An easy to make HF low pass filter form high power by k8cu

12 Volt 30 Amp Power Supply - Project for a 12 volt, 30 ampere Power Supply Unit

28 VDC Power Supply - This little project will make a portable 28 Volt DC power supply using two 12 Volt, 4.5 Ah rechargeable lead-acid batteries

20 Amp power supply - A 13.8 volt 20 Ampere power supply project

Fun With Tubes - Dedicated to passing on and preserving knowledge of vacuum tube circuits and techniques

Vacuum tube liquid cooling system - This article describes an alternative to water as the cooling liquid for amateur radio vacuum tube power amplifiers. This cooling system is designed for adequate vacuum tube cooling, reasonable cost, and very low maintenance. By K8CU