I have to take this one step further and point out one of my major gripes about Texas Star. I don't think I've ever seen another amplifier attempt to add bias, in the absence of both thermal tracking and any attempt at all, to regulate the bias voltage. These damn things changed their class of operation from when your car is started, to when it's off. Just the change in 12.6 volts to 14.1, shifts their bias completely.
The other gripe, is trying to get away with a 2-pole relay, while switching bias on and off and being completely dependent on a 10 Micro Henry choke to separate RF from bias. Thank God they abandoned that failed method, on any amplifier 8 transistors and up.