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The Famous EF50 of WW2 - A datasheet for the 956
collections G8LSD Valve Collection |
The acorn valves were designed to have low capacitances and therefore work to higher frequencies than the normal valves. The 955 triode was introduced in 1934, and has a 6.3 Volt heater.
The valve is marked JRC955, the JRC marking being a US Government quality code.
Radio amateurs used acorn valves for work at 144 MHz after WW2.
See HA2 for operating details.
The acorn envelope is 14 mm in diameter and, including the base pins, is 32 mm tall.
This exhibit was last updated on 02 December 2007
The valve is marked JRC955, the JRC marking being a US Government quality code.
Radio amateurs used acorn valves for work at 144 MHz after WW2.
See HA2 for operating details.
The acorn envelope is 14 mm in diameter and, including the base pins, is 32 mm tall.
This exhibit was last updated on 02 December 2007
See HA2 for operating details.
The acorn envelope is 14 mm in diameter and, including the base pins, is 32 mm tall.
This exhibit was last updated on 02 December 2007
This exhibit was last updated on 02 December 2007
This exhibit was last updated on 02 December 2007 |