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R3KBO is an amateur radio club producing and developing amateur radio kits and assembled products including HF VHF Power Amplifiers or RF Power Kits and amplifier parts, low pass filfers, band pass filters, sourge protections, splitters and combiners, antenna switches

Solar Powered Station

The MC3423 can protect sensitive circuity from power supply transients or regulator failure when used with an external "Crowbar" SCR.

The Auburn University ARC station gets its power from the sky

Anderson Powerpole connectors are becoming the standard for Raynet ARES and RACES groups as well as many Ham radio shacks round the world. This recourses page will give you a guide to Anderson Powerpole connectors in the radio shack.

Home of the HPS-1a Gamma Hybrid Communications Power Supply. The HPS-1a is a very small, light weight , power supply that is most useful for hams who take their transceivers when traveling.

N8VI\'s powerpoint on satellite keplerian elements.

A home made project for an ATV RF power amplifier

A really simple project to make a power meter measuring RF output powers from a few mW up to half a watt. A DIY amateur radio project for QRP enthusiasts

Portable Zero LLC manufactures amateur radio accessories, including tactical carrying systems and battery pack systems. The company produces the _Escort_ series Tactical Carrying System for _Yaesu_ FT-857D/891, FT-991, FT-817/818ND, and _Icom_ IC-706/703/7000, IC-7300 transceivers, available in Black Texture and OD Green. Additional products include the _Sherpa Pack_ for the _Yaesu_ FT-817 and the Field Power 12 and Field Power 3 Battery Cases. Portable Zero LLC, established no later than **2013**, manufactures its products in the USA, utilizing CAD design and CNC precision laser cutting. DXZone Focus: Portable Zero LLC | Tactical Carrying Systems | Battery Pack Systems | Yaesu | Icom

Windows PC control program for the Icom IC-7300 transceiver. Power-on and Power-off by software BktNetInterface for JTDX and WSJT-X, audio recording, memory management, cw keyer management, Interface for other software

Makers of the The Polar Explorer transmitter, which operates on 9 HF bands from 160 through 10 meters and is capable of 500 watt peak output power on SSB, CW, AM, FM and RTTY. It is intended to be used in conjunction with a transceiver.

ACOM 1000 160-6m amplifier specifications and features

Manufacturers of professional Civil & Defense UHF/VHF Base Sation Antennas,Installation Hardware, Power Splitters and Distributors of EUPEN rf Cable & Connector products.

New York City Amateur Radio Emergency Communications Service (NYC-ARECS) is a NYC based auxiliary communications service. The organization is made up of amateur radio operators who are trained and dedicated to providing radio communications for governments, civil-preparedness and relief agencies during periods of local, regional, or national civil emergencies. This may include situations such as power failures, explosions, fires, floods, earthquakes or terrorist activities. NYC-ARECS is a participant in the NYC Office of Emergency Management (OEM) Partners in Preparedness program and a member of DHS FEMA's National Preparedness Coalition.

Both Watts and Volt-Amperes are units of measurement for electrical power. Learn what is the difference

AB4BJ optimizing audio settings on the flex 5000A and heil microphones

Independently published since 1987, home power magazine and homepower.com are resources dedicated to small-scale renewable energy and sustainable living technologies.

A 600 volts power supply for QRO

Naptech buys and sells quality test equipment from hp, tektronix, including spectrum analyzers & peripherals, oscilloscope, frequency counters timers, signal generators, multimeters & voltmeters, RF & power meters, microwave amplifiers

A simple Drake R-4C receiver power supply modification

With this mods you get more power, about 60W output on 4m from the Yaesu FT-847, mod by G4FUF

The ARRL powerpoint on satellite Operations by WB8IMY

Blog site for various home brew projects including antennas, power dividers etc

manufacture and distribute specialty low temperature solder pastes, butane powered torches, tools and a few other amazing products

Measure the AC current flowing through your appliances

IdealCircuit is an analog circuit simulator working with true ideal components. It uses exactly the same unique and robust algorithm as NL5 Circuit Simulator. Simple and intuitive interface, fewer components and models, no fancy and powerful features that are only useful for specialized applications.

Bergey Windpower is one of the world's leading suppliers of small wind turbines

Distributed Antenna Systems technology used for gaining better coverage and using a lower power.

The Strathcona Radio Volunteers provides radio communication along with general manpower to public service, charity, and general events in and around Strathcona County. The club also provides backup communication to the Emergency Services of Strathcona County.

A Six-element Yagi Beam for 6 Meter by W1JR proiddes a power gain of 10.2 dB over a dipole it is built on a 24 foot long boom

KTune is a small utility that allows you to use a Griffin Powermate USB knob to tune your Elecraft K3 radio.

Modifications to an Ameritron ALS 600 power amplifier by AF6SA

Europeam perspective on BPL PLC

OpenRepeater is a low cost, low power, but feature rich duplex repeater controller suitable for setting up a temporary / emergency repeater systems with radios that can be run on portable power. Download the latest OpenRepeater software for your Raspberry Pi 2/3/3B+/4. This image contains everything you need to get up and running quickly.

An operating guide for the com IC-2720H VHF/UHF Radio, includes Turning the power On or Off, Selecting the Output Power, Activating Memory Mode, Operating in Memory Mode

Common problems of the 572B tubes often used in many RF Power Amplifiers

How is your SWR - determine the power loss to expect for a given SWR, includes an excel spreadsheet by n3ujj

VK1OD informations on BPL

HF/50 MHz 100W All Mode Transceiver. The FT-891 provides stable 100 W (25 W AM) high power output

The correct procedure for measuring SSB PEP (Peak Envelope Power), using an oscilloscope with a vertical bandwidth of at least 20 MHz, or a monitor scope.

Free pdf book on Nicola Tesla. He is the true unsung prophet of the electric age; without whom our radio, auto ignition, telephone, alternating current power generation and transmission, radio and television would all have been impossible

Article appeared on 10/05 issue of QEX about the impact of load SWR on the efficiency of Power Amplifiers, PDF File by K9LA

This air-powered Tennis Ball launcher is designed to launch tennis balls over trees towing fishing line.

Pictures and information about a solar powered station located in an old caravan in the Australian Bush by VK5SW

An interesting article about amateur radio portable operations with excellent pictures. Setup includes a 60 watts of portable solar power being controlled by a charge controller, and a batteries powering an FT-897D.

A low cost, low power microwave transverter so that you can operate easily on 70cm band even with a HF or VHF transceiver

Official web site of the Alaska QRP Club The AK/QRP Club is dedicated to the enjoyment of low power Amateur Radio operations.

Power loss table by SWR values

Schematic diagram for a high voltage power supply by W4NFR