Power Triode
( With Circular Ribs )
The RCA GLOBE RADIOTRON UX245 Vacuum Tube with its circular ribs is a glass
type used in the output stages of radio receivers.
These are Very Early globe tubes
manufactured in the 1920's.
They should be mounted in a vertical position.
Horizontal operation is permissible if pins 1
and 4 are in a vertical plane.
The UX245 Vacuum tube was first manufactured by RCA in the
1920's
Electrical Data:
Filament Voltage .............................. 2.5 V
Filament Current .............................. 1.5 A
Preferred Substitutes .................... 57T245,
145, 245, 245-C, 445, A245, C-245, CX345, ER45, EX645,
MX245, PH245, SX245, UX245, VT-45.