21
13. 10.5cm Twisted pair hookup wire (Part # CB10.2): This wire is used to transmit the 6.3V heating
filament voltage to the tube. Untwist about 1/4” (6-7mm) of each end of the twisted pair and
straighten the ends out with your pliers.
40
Strip off about 1/8” (3-4mm) insulation from each end
of the two wires.
41
On the solder side of the board, install the four stripped ends in the holes
marked “HEATERS”.
42
It doesn’t matter which wire goes into which of the two holes. Solder each
of the four ends on the component side of the board.
43, 44
40 41
42 43
44
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