dc power supply

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.

A Cost Effective Current-mode 1:1 Balun - A cost effective current-mode 1:1 balun can be constructed from a length of coax and a rod typically used for a broadcast antenna loop-stick, some electrical tape, cable ties, a length of PVC water-pipe and some connectors.

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

W1PBR Pen Bay Amateur Radio Club - Website about Midcoast Maine's Pen Bay Amateur Radio Club, W1PBR.

W2ABC Bears NYC - The online home of the Broadcast Employees Amateur Radio Society (BEARS), Inc.

W5NGU Denton County Amateur Radio Association - The Denton County Amateur Radio Association is located in Denton, Texas

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.

Graham's scanner frequencies - Grahams Goldcoast Australia Radio Scanner Frequencies

The Tube Center - Supplying over 2000 different vacuum tube types, valves, grid caps, sockets and capacitors. It is easy for Antique collectors, Ham radio operators, audio enthusiasts, broadcast enthusiasts and amateur radio hobbyists to buy, sell and trade vacuum tubes, electron tubes, audio tubes, valves, grid caps, sockets and capacitors

TWPSK - A linux soundcard based PSK program by DL9RDZ and WA0EIR

TWCW - This linux program will send Morse Code via soundcard or serial port by WA0EIR

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.

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.

Toaster transceiver - A 2W 80 meters transceiver assembled into a toaster case.

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