BEAM POWER PENTODE
The RCA 6MJ6 Vacuum tube is a
duodecar type used as a horizontal-deflection amplifier
in color and BW TV receivers. They are also used in Short
wave and Ham radio equipment.
They require a duodecar 12-contact socket.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 2.3 A
Maximum Heater-Cathode Voltage:
Heater Positive with Respect to Cathode:
Total DC and Peak ......................... 200 V
Heater Negative with Respect to Cathode:
DC Component .............................. 100 V
Total DC and Peak ......................... 200 V
I would like to comment on my experience with a
replacement for the 6LQ6 tube. It was a 6MJ6 tube that
was substantially heavier all the way around. The glass
envelope was 4 times thicker for starters. The plate
cap was not a cap soldered to a thin wire emitting from
the top of the tube but an integral molded part of the
top of the tube in the form of a ribbon of metal from
the plate or anode to the top of the tube and the plate
cap molded into the thick glass enclosure. The plate
was heavier metal than any 6LQ6 or 6JE6C that was made.
The 6MJ6 was considered industrial version of 6LQ6 and
about 4 times the tube of any 6LQ6 made at the time,
circa 1970's, 1980's, early 1990's and RCA's were the
best of the 6LQ6's at that time; but the 6MJ6 were better.
I have no idea if 6MJ6's are still available anywhere, I
paid twice the price for them when I was using sweep
tubes in a rig that had tube finals, and a linear that
ran them as well. They took a tremendous beating that
would kill a normal 6LQ6/6JE6C tube.
These tubes were hard to beat, kinda like having a
3-1000z in a 3-500z enclosure but at much lower plate
dissipations, say 90 to 100 watts.
This is a statement made by Gene Bigham.
http://lists.contesting.com/pipermail/amps/2004-June/039133.html
Preferred Substitutes ........... 6JE6C, 6LQ6