The LV1 is a WWII low noise RF pentode that dates from 1941. Noise is reduced by running with a high anode current and this valve could operate with 20 mA. It was used at around 125 MHz at the front end of the German Freya ground radar. The base has eight short solid pins at the same pin diameter as the B8B base. The spigot is shorter than the Loctal base and the locating pip is not mid way between two pins.
This exhibit is new and in original box. Our other LV1 shows the detail of the valve. As this box has the original seal intact it was decided not to open the carton. The box is 46 mm square and 113 mm long.
The box is plain pasteboard.
The paper label carries the Telefunken name.
The wide glass tube envelope is 30 mm in diameter, and excluding the special base pins is 58 mm tall.
References: Data-sheet Type LV1 was first introduced in 1941.