Some thoughts on low cost, solid state, efficient, kilowatt-class HF linear amplifiers
Emtron | HF Linear Amplifiers | Sydney
SIZE: mm x 70mm x 41,5mm. Produced by ITB, this device is the best, at the state of the art, the market can offer! Silent thanks to a Softweare system that controls the temperature of the Mosfet 3 and adjusts the fan speed 2 , mounted in Rack 3 Light unit thanks to the use of Switching power supplies, protected on the RF Input up to W, delivers 3 KW with a typical pilot of Watt. Extremely quiet, thanks to the Software system that check the temperature of the Mosfet and regulates the speed. A large display shows the most important operating parameters PWR, SWR, temperature weight enabling easy portability 7. This solution allows to realizare an amplifier without the use of expensive couplers thus reducing the size. Mounted on a base of copper with 10 mm thickness, cs golden and metallic, Bias independently for each "Gate".
Linear Amp GEMINI HF-1K 472KHz-50MHz Solid State Linear Amplifier
These amplifiers work real linear amplifiers and not as a C class device, as many simple CB type amps do. A special feature the amplifiers have a six-way output low-pass filter, which is switched automatically by micro processor. Additionally this filter can be switched manually e. The relative output power is shown on a bar graph on the front panel.
Technical review. How to select a solid-state HF amplifier? If you like digital gears and if complain about performances of your antenna system, in this case the purchase of a solid-state HF amplifier can be a good solution to work DX stations in better conditions. I do no mean that your amplifier might replace a defective antenna.