RCA Made In USA - a tube with grunt!
Removed from working equipment and tested as OK quite some time ago.
The correct operation of these tubes requires medium technical skills, especially with regard to the grid bias setting and the consequent idle current.
These tubes were used in many HF RF Linear amplifiers some years ago, notably the NCL-2000 using a pair of these for 2KW output!
RCA
Beam Power Pentode
8122
Very small physical size compared to a 4CX series tube
Useable HF ~ VHF (up to around 500MHz)
Single output up to 570W PEP @ 30MHz (Class AB2) or 300W CW @ 500MHz
Made in USA
Forced air cooling
13.5V heater
Commonly used for RF high power output
Anode (plate) voltages usually in the range 2KV ~ 3KV
Type number is printed and clear to read on the ceramic chimney
I do have the full specification sheet and pin outs for this valve available should you need it
