The 6062 is the American Type designation for this special quality valve. The CV4039 is the M8096 in UK Government specification and this also appears on the glass.
Commercially the 6062 or M8096 is the special quality version of the QV03-12 transmitting valve (Mullard) designed for vibration resistance. This provides a rugged valve for use in situations where vibration may be encountered. In practice this would have found service in portable military transceivers.
The valve is designed to operate at HF (up to 30 MHz) at full power but may be used at a maximum at up to 175 MHz. In the latter case the valve would probably be employed as a frequency multiplier rather than an output valve.
The anode mainly obscures the electrodes but some of the structure is visible. The cathode is flat and the two grids are gold coloured. There is no beam plate visible just four support rods, and these may be sufficient on their own.
The vibration resistance is provided by the use of triple mica discs at the top and double near the base.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 59 mm tall.
References: Data-sheet. Type 6062 was first introduced in 1951. See also1951 adverts.
