2.45 amplifiers

HF-series Power Amplifier - Manufacture HF-serie power amplifiers for global radio amateurs. Provide two models: manual HF2000DX and automatic HF2011DX-A

GB Hardware & Software - HF Linear Amplifiers, maker of the HAL600 Atlantic atomatic HF Amplifier

Kronotek  ^new - European manufacturer of transverters for VHF and microwaves bands, transverters and amplifiers for 4 m, 23 cm, 13 cm and 3 cm bands. We have articles for 4 m, 23 cm, 13 cm and 3 cm bands.

HF Projects Kits  ^new - Provide service, quality home construction projects, travel antennas, masts and bases, hf and vhf amplifiers, low pass filters and z-match tuners

Fox Tango Yaesu Amplifiers page - A page dedicated to Yaesu FL series RF Amplifiers, from FL-2100 to FL-2000 FL-2500 FL-1000

RF Amplifiers Reviews  ^new - A complete HF power amplifiers reviews by Matt Erickson KK5DR. Each amplifier is rated with a vote and a short comment.

About HF Amplifiers - Article on evaluating HF Power amplifiers and review of popular PA by K0BG

ALC for real - Learn more about ALC usage in RF Amplifiers and how it really effects things from an operational point of view.

Using VNA to adjust Linear amplifiers  ^updated - Linear amplifiers cold adjustments with network analyser (VNA)

4-1000A Homebrew HF Amp - Building an HF power amplifier based on a 4-1000A

Using cheap tetrodes in amplifiers - This article is written to dispel some of the misconceptions and misunderstandings about some of the tetrode based linear amplifiers, which are currently available on the amateur market.

Arcing or Gassy 572B Tube - Common problems of the 572B tubes often used in many RF Power Amplifiers