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The I0JXX is an italian company that offers market their projects, also sells electronic products of high quality, both for Ham, both Broadcast and their accessories. VHF Antennas, mosfet power amplifiers, filters, insulators, power dividers, telescopic poles, antenna masts

G3WZT design for a single stage bi-polar 100-150W Linear Power Amplifier for the 6M band.

HF Linear amplifiers and power supplies manufacturer

Preamp & Power Amp By Alkberto, I0XGR

Circuits, pictures and data about toroids, tubes and home made power amplifiers

This project is an interface box for the Yaesu FT-817 that includes a band output port, a computer serial interface, and a remote interface for the FL-7000 (and Quadra?) solid state power amplifiers

This simple 30m QRSS beacon is built entirely out of junkbox parts, the only component purchased specifically for this project was the 10,140kHz crystal. Hans Summers' 30m QRSS beacon project emphasizes simplicity and low cost, built almost entirely from reused parts. Key components include a 10,140kHz crystal, a 2N3904 transistor from a broken DVD player, and an ordinary LED used for frequency shift. The oscillator is stabilized in a polystyrene box, with power amplification driven by recycled copper PCB. Output power peaks at 360mW, and a custom 50-ohm dummy load manages heat. Though aesthetically unconventional, the beacon works effectively, fulfilling the project's low cost aim.

An RF power supply for 144 MHz schematics and instructions

High Voltage Supply for GS 35B Amplifier

The 60 Watt linear amplifier is simple all solid state circuit using power mosfet IRF840.

Low power VHF RF amplifier with VMP1 Mosfet by IZ1BTS IK1XPD

Ferrite Toroids. Iron Powder Toroids. Ferrite Beads. Split Cores. Cable clamp-ons. Balun Cores. W2FMI Baluns and Ununs. Inductive components for EMI Suppression and RFI Suppresion, power supplies, HAM radio.

BIRD RF power measuring, new and used, HENRY RF power amplifiers (used HF amps), TOHTSU coaxial relays, SAMLEX power supplies, RFI chokes reduce interference, Parts parts, tubes, Used amplifiers, radios, antennas and accessories, Los Angeles, CA.

1 watt amplifier for 10 ghz made from surplus stuff

A VHF power amplifier made with two cheap RF transistors, 2N3924 as driver and a BFS22A for final stage, giving an unexpected output power of 7-8 watts maximum

VHF UHF Amateur radio antenna and antenna parts, accessories for homebrewers, antenna kits, tubes, antenna masts, antenna tripores, insulators, power amplifier mosfet, power splitters by I0JXX

A MRF141G 3-175MHz Broadband Power Amplifier DL4MEA 02/1998

Sometimes amateurs like to home-brew their power supplies instead of purchasing one off the shelf at any of the major ham radio retail dealers.

Home made RF power amplifier for six meter band

Hilberling GmbH based in Rendsburg Germany manufacturer of HF VHF Transceivers, rf power amplifiers, power combines, RF generators, power supplies, Antenna Diplexers and Triplexers

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

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

Two types of multi-functional Home-brew 6/8Amps - 20 Ampere variable power supplies by ON6MU

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

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

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

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

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

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

ON6MU 4 A power supply using a BDX33

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

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.

How the tube converts DC to RF Power

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.

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

Schematic of a 4 AMP / 18v regulated power supply by ON6MU

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

A Compact 8877 50MHz amplifier and Power supply