Battery Adapter For AN/PRT-4
Hand Held Tactical Transmitter. 2 Channel Crystal Controlled.
Original Batteries: BA-399/U 15 volts DC.
"Stack" of wax cells.
2-9 volts in series for 18 volts.
2- 9 volt snaps
cardboard cereal box
2- 9 volt holders
Unfold flaps on bottom of battery and remove guts. Cut wires off of connectors and discard
Cut cardboard box 4-1/4" x 1-3/4". Fold as shown in [Figure 1]. Tape old
connector as shown to top of cardboard. Glue battery holders as shown in [Figure 2].
Solder as shown in wire diagram in [Figure 3]. A small rubber band around the batteries
and adapter will hold them in place. Insert unit with 2-9 volts into cover and place in
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