8
Refer to the drawing below during the following steps
. The top view shows the approximate location of
the windings and pads for each inductor. The side view shows how capacitors C1-C8 and inductors L1-L8
must be mounted, including round rubber insulators for L3-L8.
C5
C7
C3
C1
L4
L5
L1
L8
C6
C8
C4
C2
L3
L6
L2
L7
BLUE CORE
Install C4 (82 pF) as shown above. Trim the leads to about 1/8" (3 mm) long, and bend them down at
right angles to the capacitor body. (Adjust the lead spacing to match the pads.) Insert the leads into the C4
pads just far enough to hold the capacitor in place. Do not insert the leads all the way through the board.
They could puncture the relay on the opposite side
during soldering, causing a short.
Solder C4. Adjust the body of the capacitor so that it is parallel to the board and not overlapping the
location for C2 or L6. Also make sure it doesn’t touch any relay pins or pads.
Install C3 (39 pF) in the same manner as C4.
Install C1 (10 pF) and C2 (22 pF) as shown in the drawing, with the bodies of the capacitors tilted
over C3 and C4, respectively, at about a 45-degree angle.
Install C5 (150 pF), C6 (300), C7 (620) and C8 (1200). The bodies of these capacitors should be
parallel to the board and not interfering with adjacent components.
i
In the following steps, L1 through L8 will be wound and installed.
There is no need to adjust the
windings to precisely match the inductances shown on the schematic.
The inductances need only be
approximate, since for any given antenna match only a subset of the inductors will be used.
Cut a 2-1/8" (5.5 cm) length of insulated hookup wire. Remove 1/8" (3 mm) of insulation from each
end. Wind this wire onto a red toroid core as shown in the top view of the L-C board (2 turns).