A solid-state (transistor) amplifier which is powered directly from the mains.
Output can be selected high or low (approx half when on low) and there is a variable 26dB pre-amplifier.
This has the advantage over it's valve equivalent of giving instant output (no warming up) and requiring no tuning.
The disadvantage is that transistors are much less tolerant of a high swr and will blow if the swr is too high.
