Battery powered circuit for HF transmission amplifier

摘要

Pref. a buffer stage is incorporated as a third stage in parallel with the drive stage. A further buffer stage may be in parallel with the VCO. An operational voltage filter may be in series with the VCO.A current control stage (d) allows working condition variations to be equalised and prevent even an accidental touching of the antenna leading to disturbance. This control stage can be controlled via a MUTE input at a resistor (R90).