9GV8

Message to administrators - the tube 9GV8 should mention XLS85 as an equivalent, not with heater different.

Source: RCA data sheet; the tube displayed also shows both references printed on the glass.

Thank you!

Hello Christian,

An European tube type XLS85 does not exist.
The letter S is not included in the European tube designation system.

The next closest European type to the 9GV8 is the XCL85, which has the same heater current 0.6 A, but a slightly different heater voltage of 8.6 V instead of the 9.5 V of the 9GV8.

The RCA specifications are incorrect.

Best Regards,
Jacob

Hello Jacob,

My typo, sorry! Of course I meant XCL85.

In spite of slight variations in voltage specs / tolerances (according to manufacturers too), the two tubes XCL85 and 9GV8 are given equivalent by several manufacturers.

See attached pictures: RCA, Miniwatt, Sylvania

You can also see the many pictures of the tubes and the boxes on the radiomuseum site (e.g. the Dumont box with the XCL85)

Thank you!

Anexos

• XCL85 9GV8 - extract RCA data sheet (52 KB)
• XCL85 9GV8 - extract Miniwatt data sheet (89 KB)
• XCL85 9GV8 - picture of Sylvania tube (413 KB)

Hello Christian,

due to the slightly different heater voltage the 9GV8 and XCL85 are now linked as
“Normally replaceable-slightly different” to each other.

Jacob