Beam Power Pentode
Bugle Boy ~ Made by Amperex
The Amperex Bugle Boy 6AQ5 / 6AQ5A / EL90 Vacuum tube is
simply the best. It is a miniature type used as
an output amplifier primarily
in automobile receivers and in AC-operated receivers.
Within its maximum ratings, the performance of the
6AQ5 is equivalent to that of larger types 6V6 and
6V6GT. The 6HG5 is the exact same tube as the 6AQ5. It
requires a miniature 7-contact socket.
Electrical Data:
Heater Voltage ................. 6.3 V
Heater Current ................. 0.45 A
Heater Warm-up Time ................. 11 s
Maximum Heater-Cathode Voltage:
Heater Positive with Respect to
Cathode DC Component .......... 100 V
Total DC and Peak .................. 200 V
Heater Negative with Respect to
Cathode Total DC and Peak ..... 200 V
Preferred Substitute .......... 6005, 6HG5, 6669.
Substitutes ............................ 6HR5, 6DS5.