Addition o an RF power stage that you can use to extend your communications range. This part of the transmitter is arranged for class-A linear service.
Although it is not necessary to use a linear amplifier for CW or FM amplification, there are some advantages : (1) a linear amplifier produces a lower level of harmonic currents; (2) it is easier to drive when a low-power stage is used to excite it. (3) the keyed waveform of the overall transmitter is less clicky than when using a class C amplifier after the keyed stage.
The Output power from Q2 is approximately 1 watt. This level of power will enable you to work DX when band conditions are good.
(source : W1FB Design Notebook)
No comments:
Post a Comment