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PHASE 7
Final Wiring, Connections, Mechanical Assembly
7-1. If you did not double-check all parts values, parts
orientation and solder connections as recommended after
completing each phase, NOW is most certainly the lime to do so!
We designed this receiver to be satisfying to build right the first
time, NOT to be taken apart repeatedly!
7-2. If you did not do so already, mount both "C" battery
holders to the battery shelf using four #4 self-tapping screws.
The battery holder snap connectors should line up with the two
big notches at one end of the shelf . The battery holders are on
the top of the shelf, and the mounting flange points down.
7.3. To obtain 12 volts DC, the use of 4 "C" cells in series
(6 volts) with an identical set of 4 "C" cells requires a correctly
polarized series connection between the two battery holders, as
explained in steps 7-4 through 7-7.
7-4. READ FIRST: Attach both battery snap connectors to the
matching terminals on the two battery holders. Note that a
BLACK wire of one connector is immediately across from the
RED wire of the other connector: soldering these two wires
together will place the two sets of 4 batteries in series tor 12
volts output. Proceed to Step 7-5.
7-5. Per Step 7-4, CUT the black and red wires nearest each
other from the two battery holders to about 1.5.
7-6. Strip 1/8" to 1/4" of insulation from both wires cut in
step 7-5, twist the bare conductors together and solder them.
Wrap a short piece of your own electrical tape around this solder
connection.
7-7. The remaining black (-) and red (+) wires from the
battery assembly are stripped, tinned and ready to use.. With 8
"C" batteries installed, the finished battery shelf assembly may
now serve as a 12VDC supply for any receiver tests prior to final
assembly.
7-8. Mount the DC power connector in the upper left corner
of the rear panel, using the #2-56 screws, nuts and lockwashers,
the smallest such hardware in your kit.
7-9. Prepare a 4.0" length of RED wire and solder one end to
the other pad in the "Power Switch" box outlined on the board.
(One such wire was installed in Step 1-29.)
1253 - 40
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