TWO VERSIONS OF THE AMPLIFIER SHOWN HERE. ABOVE ONE IS INSTALLED IN A BUD CU3003 BOX, THE BOTTOM ONE USES AN EXTRUDED ALUMINUM CASE. SW1 IS PWR, SW2 IS FAST/SLOW.
USE FOR CW, SSB AND DIGITAL MODES, CAN BE BUILT FOR OTHER HF BANDS WITH MINOR CHANGES. NOTE: With 13.7 volts and 5 watts drive typical output on 40 meters is 23 watts, on 80 meters, 34 watts output. 80 meter version requires different component values in LPF section only as shown in the manual.
NOTE: 80 meter build also usable on 160 meters and the 40 meter build is usable on 60 meters.