The E182CC was an extra special quality version of the E82CC which was itself a special quality version of the popular ECC82. The E182CC was designed with both an anti-microphonic construction and with two matched AF triodes within the envelope. These features made them especially suited for differential amplifiers in such instrumentation as pen recorders and bridge circuits. The Honeywell pen recorders used the E182CC for optimum performance.
This exhibit is labeled as of Foreign origin.
An amplification factor of 24 is quoted. The operating conditions, performance and pin connections differ from the ECC82.
The twin triodes each have heat radiating fins mounted on the top of the control grid supports.
One of the anodes seen face-on. The control grid support rods are copper.
Thanks to John Sykes for sending the photographs.
The thin glass tube envelope is 20 mm in diameter and the length excluding the B9A base pins, is 50 mm.
Reference: Datasheet. Type E182CC was first introduced in 1958.