variable regulator power

Building High Power, High Q, Loading Coils - This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter (1.83 MHz) vertical antenna.

An 80-160 magnetic loop antenna - A classic diamond shape loop antenna that works fine on 80 and 160 meters band. This loop design allow a few watts power only and include part list and construction details.

Where Does the Power Go - An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line

Comparator-based RF switch - This is a concept paper, not a constuction article. There are too many variables to propose a one size fits all design. However, this paper should give you the basic idea how to do it

Loop Antenna Basics - Loop Antenna Basics and Regulatory Compliance for Short-Range Radio

Z Match for High RF power - Based on VK5BR's Z-Match and designed for High RF Power covers 160 to 10 meters by VK6YSF

C6 Bahamas - Sand Dollar Villa is equipped with two antennas and two power supplies, and an extensive tool kit. Has proven to be an excellent spot for people on vacation who also like to engage in casual DX ham radio operation.

Madell Technology Corporation - Makers of oscilloscopes, spectrum analyzers, frequency counters, power supplies and more testi equipment products

Rajessh Eng. The Tower Company - Rajessh Engineers is a general Purpose designing, fabricating, and commissioning of communication towers, transmission towers, sub-station structures and their accessories. Rajessh Engineers located at IT Highway, Sholinganallur, Chennai, Tamil Nadu, India. Rajessh Engineers is an engineering steel fabricating company to meet the highly specialized needs of the communication, power industry.

Low Power Radio and Broadcast Company - Manufacturers of high performance low power am transmitter products: sstran amt3000, bc-100, and the mw-250. for home and professional use.

TLDetails - Transmission Line Details. This utility program shows the impedance and SWR at both ends of a transmission line and the details of power loss in the line. It includes characteristics for over 40 built-in line types. You can modify these values to see how small changes affect the results or to specify custom lines. All program inputs may be changed directly or you can use spin buttons to make the changes. If you are using a moderately fast computer you can hold down a spinner and "watch the movie" on the charts as the results are recomputed. By AC6LA

Solar Panel Charger Project - A flexible, foldable, and durable solar product that produces enough power to charge your Battery Pack quickly

Relay Driver for Power Amps - A simple but complex relay driver for power amplifiers

A LF power amplifier - A Low Frequency (LF) RF Power Amplifier by VK5BR it operates in a linear mode and can handle CW, AM and SSB.

COLLINS 30L-1 HF Linear Amplifier - The Collins 30L-1 Linear Amplifier has 1000 watts PEP power input on SSB and 1000 watts average on CW on all bands. It can be driven by the Collins 32S-3 Transmitter Collins KWM-2 or KWM-1 Transceiver, or most 70-100 watt exciters.

80 m Hexfet power amplifier - 80m hexfet power amplifier by W7ZOI

Six-Meter Linear Amplifier - This homebrew six-meter linear amplifier started off life as a "junker" Alpha 76PA h.f. amplfier. Power output is 800W

NiCad battery charger - A basic nicad battery charger using a single medium power transistor.

Lightning Safety & Power Quality Issues - LightningProtection: Lightning Safety & Power Quality Issues. A moderated professional forum by recognized experts, for accurate technical information on lightning, surge and grounding information.

A Power Supply on the Cheap - Need a variable power supply that is short circuit protected and over voltage protected; Here is a good one that can be built cheap by VE3IVJ

Variable regulated power supply - 1.2-30V 1.5A variable regulated power supply

15 A from a PC Power Supply - 13.8 V 15A from a PC power supply

The Smart Switch - The purpose of this project is to build a smart switch A smart swith is a swith that needs a short press and the power will be turned ON.

Ham Radio and BPL - Broadband over Power Lines (BPL) and Amateur Radio by the Rochester Amateur radio club

SWR vs. Loss - Table of power loss to SWR relation