10 watt amplifier for 18MHz

This project and your efforts will provide you with a 0.55...3 watt input to easily 10 watt output. 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. The design is a good balance between output power, physical size. The completed amplifier will reward the builder with a clean, more powerful output signal for a QRP rig when radio conditions become marginal.
10 watt amplifier for 18MHz - schematic

Power amplifiers used in base stations require biasing for proper RF performance. BIAS has be applied to T1 to have clean proper and correct SSB modulation using this amplifier. Set P1 so +/- 35 mA current flows through T1. Depending on the type of transi

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