EL37 = 6L6G

Equivalent VT115, 7027A, 7581, E1487, W1295, NR77
Similar type 1487, 1614, 1619, 1622, VT164
With different Vf 25L6, 35L6
CV number CV586, CV1286,
CV1947, CV1948, CV2796, CV2817, CV5306
Swedish Mil.nr. M2463-090, M2463-091,
M2463-092, M2463-274
Tektronix part no 154-0087-00
Hewlett-Packard part no. 1923-0034
Army ZA or ZC ZA16133, ZA17812