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A Low Power Indoor Portable HF Antenna by N5ESE

A solar powered station by IN3AQK using a 10W solar panel charging a 12v Pb sealed battery.

An High voltage power supply design by F1FRV

Changing band selector to a Kenwood TL-922 power amplifier by IW1PUR in italian

An overview of coax cable often called coaxial feeder or RF cable, used to feed antennas and deliver radio frequency power from one point to another

A project of a linear regulated for low noise power supply 16v, 10A

Replacing the Yaesu FT100D SRF7043 VHF/UHF RF MOSFET Power Amplifier

Designing a beacon keyer that transmit the relative output power along to call sign.

Manual of the BD-35 Dual Band VHF UHF RF power amplifier by Mirage Amp

A home made 50 MHz KW power amplifier project with picture and PCB schematic by W6PQL

A 600W 1.8 MHz to 54 MHz power linear amplifier made using rugged MRF300 transistors featuring output power between 580W and 750W depending on band, power supply: 48V, 18A typical, 20A max

US amateur radio antenna manufacturer. Produce baluns, delta loops, dipoles, ocf antennas and more

A manufacturer of standby and prime power generator sets for industrial, telecommunication, commercial, small business, mobile and residential applications.

Mods.dk collection of Ameritron ALS-600 power amplifier

Digital multimeters, power supplies, frequency counters, RF analyzers, signal generators

The Orion II A9 Power Distribution Board Problem and Fix by N6IE

Resources for custom battery chargers and power supplies from powerstream

This unit uses four capacitors, only two of which are variables, and a single tapped coil. It is built in a die-cast box, and has been tested up to 80W input power on 70MHz by G4CJZ

An HF 10-20m portable RF power amplifier based on the RD16HHF1 FETS giving 25 W.

This Power meter is capable of dissipating up to 100 watts for a short period and 20 watts continuously

DragonOS is a linux distribution dedicate to Software Defined Radio. It leverages the portability, security, and power of Lubuntu Linux as a delivery package and operating environment for a pre-installed suite of the most powerful and accessible open source SDR software. DragonOS has verified support for a range of inexpensive and powerful SDR hardware, including RTL-SDR, HackRF One, LimeSDR, BladeRF, and many others.

Simple Elecraft KX3 and PowerSDR configuration by AG1LE

This online project guide details the construction of a homebrew boom microphone system. It details the assembly of a microphone shell from a 3/4" PVC pipe section and an end cap, requiring a drilled hole for a snug fit of the electret or condenser mic element. The internal wiring schematic specifies a **2.2 K** resistor and a **47 uF** polar capacitor for signal conditioning, with a circuit diagram provided for integration with IC-706 series transceivers. The guide outlines the use of CAT-5 cable for internal connections, incorporating strain relief at the rear of the mic shell, and an inline 3.5 mm jack to facilitate an external _PTT_ line, designed for a foot-mounted switch. Further construction involves fabricating a microphone shock mount from a 2-inch PVC connector, detailing the creation of four "fingers" and the insertion of screw-eyes for attaching elastic bands, which are twisted 180 degrees for tensioning and vibration isolation. A foam wind screen is also incorporated into the microphone assembly, secured with adhesive. The boom arm itself is repurposed from an articulated architect lamp, with the original lamp assembly converted into a **60 watt** resistive load for testing power sources. Microphone cabling is secured to the boom arm using wire ties, ensuring sufficient slack at hinge points to maintain articulation. The boom base is mounted to a bookshelf, requiring specific positioning to achieve proper microphone placement in front of the operator. Performance evaluation of the microphone system is conducted through on-air audio signal reports from other amateur radio operators. DXZone Focus: Online Project Guide | Boom Microphone Construction | Electret Mic Element | PTT Line

Home Brew 6 Meter Amplifier with a single 4CX250B by W4NFR

Power meters

K9EID 75W power amplifier for the six meters

NHRC-2 Based Repeater Controller A perfect controller for a simple repeater or link, or portable/solar powered system.

Portable, outdoor, trail friendly, low power HAM radio transceivers and kits for sale

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

Amadeus is a very powerful sound recorder and editor for Apple MacOS. Available in Lite and Pro version, is intuitive and a support many sound formats.

Setting up a solar power system in your shack

How to interface the Icom IC-7300 to RF Power amplifiers. Menu settings, cable connections and recommendations on how to avodi common errors that could even damage either the amplifier or the IC-7300

Baldor Generators offers a complete line of portable, standby, prime power and peak-shaving generators in the industry from 3 - 2,000 kW in gasoline, LP, natural gas or diesel. Part of ABB group

How to navigate FlexRadio PowerSDRs Pan Adapter

A nice review of the Acom 1000 HF and 6 meter RFpower amplifier by Acom in Dutch and with online google translation available. Includes pictures and notes of the popular amplifier by Acom.

Yaesu FL-110 160-10m HF linear ampflifier as ideal power amp for the FT-817 by N2CHK

This article shows how to power an amateur radio station from solar power using four kits that have been designed to work together in a modular way, each kit provides a unique function.

Troubleshooting your power supply, in determinig connections to battery, alternator and regulator interference and checking power supply leads.

Amplifiers, filters, attenuators, mixers, PLL, switches and frequency dividers, signal generators, power detectors, transimpedance amplifiers, variable gain amplifiers and more

Adding a full power output 12 meter band capability to the Yaesu FL-2100 despite of 10 meter.

A keyed piezo beeper, connected to the microphone jack of a HT, appeared feasible as a ready-made MCW generator.

Technical specifications and details of the Yaesu FL-2100B HF Power Amplifier

Pictures of a homemade monoband linear amplifier for 160m band powered by 3 x QB5/1750

Maxdao: offer you 7/16, N coaxial connectors, jumper cables, feeder clamps and grouding kits, surge arresters & brackets, wall entries and microwave components used in base tower, power dividers, couplers

Notes on the Troubleshooting and Repair of Small Switchmode Power Supplies

Information about setting up a Solar Powered Ham Radio Station.

Build a Power Source for Portable Ops that will last a while by n1gy

Battery-powered monitor designed to provide an audible indication of keying for those whose rigs lack a CW sidetone

By Floyd Sense K8AC

A 144MHz FM class C RF Power Amplifier based on a 2N6084 RF transistor, that can produce 50w output max