S57UA CW
2W 20m (70kHz bandwidth) PSK transciever from Small Wonder Labs.	K1 from Elecraft. 4-band QRP CW transciever with built-in antenna tuner (top PCB).	Ohr 100A - 20m CW QRP transciever with frequency counter.
Compact cheap dual MOSFET (IRF 510) linear HF amplifier kit from HF projects. Average 40W output with 2W input for use with QRP SSB/CW transmitters on the amateur bands 160 through 10 meters - powered from a 12 volt DC supply. The genesis of this amplifier is fully described in the 2001 ARRL Handbook and in reprint articles from the ARRL. This amplifier comprises three PCB modules: RF amplifier module containing the MOSFETs, Switch-mode power supply module which converts 12VDC to 24VDC, bandpass filter module. The amplifier module is mounted to the inside bottom of the chassis box and its MOSFETs are attached to a heat sink. The power supply board is fastened above the amplifier board, while the filter board is mounted vertically along one side end of the chassis. Works great with external automatic tuner from Elecraft.
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