We have no details about the C1111. Given the physical similiarity to the C1150 it appears to be a pulse tetrode modulator amplifier. The bell shaped anode and funnel structure of the grid support point to high voltage and high peak currents as does the ceramic insulation.

The wide glass tube envelope is 60 mm in diameter and, excluding the base pins is 130 mm tall.

This exhibit was last updated on 07 August 2006