 WD-11

The WD-11 vacuum tube, a triode, was introduced by the Westinghouse Electric corporation in 1922 for their Aeriola RF model radio and found use in other contemporary regenerative receivers (used as a detector-amplifier) including the Regenoflex and Radiola series.The WD11 and "RCA-11" (and later simply named "11" by RCA and Philips/Miniwatt) have the following characteristics