The CV1106 is a variable μ RF pentode. The CV specification was based on the 9D2 and in fact both Type designations are present on the base.
The commercial 9D2 logo as used by Brimar.
The outer screen with circular anode and three wire grids within. From the base it can be seen that the cathode is a round tube with several loops of insulated heater wire within.
The classic envelope is 38 mm in diameter and, excluding the B7 base pins, is 97 mm tall.
