PA10-300W amplifier 10-300W without LPF (Усилитель без ФНЧ)
PA10-300W power amplifier 10W in, 300W out 1.8-54 MHz with
This device is made for use with low power SDR radios , like ANAN-10,
FLEX-1500 or QRP HF transceivers.
With 6 to 8 W input power from SDR it runs solid 300W to your antenna. This
amplifier may be used with QRP transceivers like FT-817 or IC-703 (with
automatic band decoder) also.
Active elements are matched pair of VRF2933 MOSFET transistors (see
schematic) in AB-class. 2-tone measured IMD3 is -40 dBc.
Power supply required is 48V 12A.
$153 with 2xSD2933
$100 without transistors