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TWO EL84 / 6BQ5 vacuum tubes
Tubes test at 10200 and 10080 where 7345 micromhos is pass/fail grade
Excellent Amperex bugle boy logos
D getters
Matched date codes:
rX3 X7I=
X= Philips Factory in Stittard, Netherlands
7I= 1957 September
Good close matched pair / tight results
Gm within 1% difference
mA within 4% difference
Tested on Amplitrex computerized tube tester (fixed bias mode)
TUBE 1 =10200 micromhos @ 40.4mA plate current
TUBE 2=10080 micromhos @ 42.4mA plate current
% Test results in percent %
90.2% / 89.2% gm mutual conductance
84.1% / 88.3% mA plate current
Spec values for EL84 = 11300umhos / 48iP
Reject value = 65% of spec
NO SHORTS NO GAS
International shipping may be via FEDEX or UPS
