-The tubes used in the T9K39 "Main" receiver are:

• 7 Telefunken RV12 P2000
• 3 Telefunken RV12 P2001
• 1 Stabilovolt STV 100/252
• 1 Telefunken 34-42 Kriegsmarine Glow Lamp

-This receiver is extremely compact and quite complicated mechanically. It has a 240-volt power supply employing dry stack rectifiers.