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A simple & effective antenna pre-amp for 10m. Band (28-29.7 MHz)

Power supplies, rf power amplifiers, dummy loads, frequency counters, repeaters antennas manufacturer based in Italy

This is a 24 MOSFET Class E RF Amplifier, covering the 80 and 160 meter amateur radio bands.

Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX

Whether we are tuning up homebrew equipment, checking antenna VSWR, adjusting a linear amplifier, or just monitoring output power during a contest, almost all aspects of ham operation can use a power meter. Paul Wade W1GHZ

Converting a ZETAGI B303 power amplifier for 50 MHz usage

Robert Norgards KL7FM's, notes on upgrading the Heathkit SB-200

SPE Makers of RF power amplifiers like Expert 1K-FA Expert 2K-FA

WV7U's YC156 and 3CPX800 amplifier projects. Everything you wanted to know about using the YC156 or 3CPX800 in a ham radio linear amplifier. See pictures, schematics, test data, links, and more!

G3WZT design for a bi-polar 600W Linear Power Amplifier for the 6M band.

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

Collection of modifications for the Heathkit SB-200 RF power amplifier

A microphone preamplifier schematic for hand-helds by ON6MU

An RF power Amplifier for HF bands with 3 GI-7B tubes by CT1FMS

The circuit is based on two AD8307 log amplifiers, which are connected to the forward and reflected ports on a directional coupler

Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX

A simple RF power amplifier initially designed for 40 meter band can work on 10 15 20 40 80 meters

A lower power desktop linear with integrated 120vac power supply. This, very compact, dual 811 version will deliver about 300 watts output. Covers all bands including WARC bands.

DIY kits a 70W SSB linear Power Amplifier for YAESU FT-817 KX3 running HF 80m-10m bands

TX RX Systems Inc. manufactures signal boosters, rf antennas, transmitter combiners, cell enhancers, land mobile radios, duplexers, receiver multicouplers, bidirectional amplifiers, bda, rf amplifiers, rf filters, rf cavity filters, rf combiners, rf components, in building rf coverage, repeaters, repeater amplifiers, rf management equipment, rf systems, and rf solutions. TX RX Delivers Reliable Solutions.

High Power RF Amplifiers by Delta Sigma, Inc

The two linear amplifiers are ment for use with QRP SSB/CW/FM/AM transmitters on the amateur bands 15 and 17 meters can be powered from a 12 volt DC supply by ON6MU

A Solid State HF Amplifier with 16 mrf150 featuring 2.4 kW 1.8 MHz - 30 MHz

HF power amplifier project powered by GU-78B by SV8JE

Autotune Linear Amplifier

Class C tuned VHF power amplifier for the 6-meter band by ON6MU

2 meter kilowatt linear amplifier

AM-6154 222MHz grid Conversion Information by N0UK

Offer a wide range of homebrewing projects mainly for VHF UHF operations. From vhf antennas to preamplifiers, chargers and power supplies

SM5BSZ article on building VHF RF amplifiers

An home made RF Amplifier project that allows near full power output from 813 tubes

20 Watt Power Amp for Softrock or for QRP transceivers by M0RZF

RF and Microwave Power Amplifier and Transmitter Technologies, amplifierlinearity, efficiency and available RF power devices.

This circuit consists of microphone amplifier and a high pass filter. Suitable to improve signal readability.

There is not a personal design on this page, just I've transfered useful notes from PHILIPS RF Bipolar Transistors - Data HandBook about BLY89C VHF Power transistor, which is very popular among Amateur Radio homebrewers

A solutiom for the Ameritron AL-811(H) RF power amplifier, burnt panel meter lights. A common failure with the Ameritron AL-811 and similar amplifiers is that the panel meter lights burn out prematurely. These bulbs are usually integrated into the actual panel meter. The solution for this is to provide the meter backlighting with LEDs.

This article examines the performance of the Ameritron AL-811H amplifier with the supplied 811A tubes and with 572B tubes, and details a procedure for replacement of existing tubes.

The 23 cm amplifier pictured here delivers more than 300 watts with 10 watts drive.

Icom Kenwood Yaesu MyDel dealer, offer a wide range of ham radio products, transceivers, antennas, rotators, microphonrs, aerials, dummy loads, rf amplifiers and scanners based in UK

RF Connectors Cable Assembly Attenuators Filters High Power VHF Amplifiers, Adapters MMCX MCX SMA SMB SMC BNC TNC N from RFAC Solutions

Plans and hex code for an RF wattmeter based on an Analog Devices AD8307 log amplifier.

This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components.

Ameritron AL80B AL811H AL572 Amplifier Trouble Shooting. Tubes replacement, resistor changes.

Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

How to build a lightweight amplifier that can be backpacked around.

6-Meter Solid-State 100W Linear Amplifier complete documentation German and English

Distributor of Sovtek, other current production vacuum tubes, and NOS tubes. Distributor of electronic parts for audio and musical instrument amplifiers. Manufacturer/ Distributor of Electro-harmonix effects.

Prince Edward Island. The PEI DX Lodge offers a turnkey operation from a custom designed shack featuring state of the art transceivers/amplifiers, etc. and the ultimate in antennas on every band.

A Compact 8877 50MHz amplifier and Power supply

A simple 137 kHz antenna preamplifier to make your FT-817 (and others) useable on 2200m band.