The tag on mine says it's an RA-101A, but the sweep chassis has the RF supply. My guess is that at some point, the chassis was upgraded for whatever reason.
The 60 Hz HV supply in a normal RA-101A is dangerous, so you would certainly have to be careful with it. I agree that a ham radio amplifier or microwave oven is equally dangerous, but so as long as you're clear and correct in your understanding, and follow strict rules (like "one hand in the pocket" when working on live circuitry), you have an excellent chance of avoiding danger.
By the way, the current needed to be lethal is something like 100 mA, and anything over 10 mA is considered pretty dangerous. A typical RF HV supply can only supply something like 1 mA, so although it hurts, you're going to be OK. A 60 Hz supply could also be OK if it were properly current limited, but the filter capacitors unfortunately can unload a rapid pulse with quite high current, even if the supply can't sustain the higher current very long.
Once the supply is capable of providing 100 mA or so, it doesn't particularly matter if it can deliver 100 mA, 500 mA, or 1 amp. So it's not really correct to claim that power supplies that are capable of delivering higher currents are more lethal than something around 100 mA. Once you get to that level, it can be lethal.
Some good reading here:
https://www.physics.ohio-state.edu/~...l_current.html