15
3.2.
HF part
power amplifier was designed to achieve the RF performance of the MOSFETs, when applied to the
144 – 148 MHz frequency band. Design was tuned for performance at 1800W CW output, 50VDC. It consists of
„no tune“ distributed element matching circuits designed to be as small as possible. For operating it is important
that adequate heat sinking was provided in the design.
RF boards are the most important
parts of the PA. Detailed view on the
one board. Freescale MOSFETs are in
use.
