30 Watt shortwave power amplifier

 

I recently ordered and tested a this shortwave amplifier for shortwave. Its technical specifications were consistently good and surprised me. For 25 euros, you get a well-designed product. For extended use, the heatsink should be additionally cooled with a fan or replaced with a larger one.

 

The amplification gain is in between 6,2 dB and 7,7 dB.

 

The impedance matching to 50 ohms is good. 

(top: through the amplifier / bottom: through)