Amplifier Stability

The paper below is based on my experience of over 20 years, dealing with RF Solid State transistorised VHF and UHF Radio Frequency Amplification. The problems highlighted below are more or less unique to Class B high efficiency driver and final output stages, found in FM Exciters and RF Power Amplifiers.
Stephen Moss

Low Frequency Oscillations are a real problem in some VHF Transmitters that use solid state finals