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A wire jumper will be inserted into J2 in the following steps to act as an antenna tuner bypass
during Filter board alignment. The jumper can be removed later when the KAT1 auto-tuner option is
installed. If the jumper is left in, make sure it is fully inserted into J2 so it won't fall out. (The jumper can
optionally be soldered permanently into place on the bottom of the Filter board.)
Cut a 1" (25 mm) length of solid #24 insulated hookup wire (supplied with the K1). Remove 1/4" (6
mm) of insulation off of each end.
Insert this wire into pins 2 and 10 of J2, as shown in Figure 8. The pins on J2 are counted from left to
right and top to bottom as shown.
Figure 8
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Before handling U1 in the next step, touch an unpainted, grounded metal surface.
Carefully straighten the leads of U1 (PIC16C621A) as shown in Figure 9. The two rows of pins must
be straight and parallel to each other to establish the proper pin spacing. To straighten the pins, rest one
entire row of pins against a hard, flat surface. Press down gently on the other row of pins and rock the IC
forward to bend the pins into position as shown below.
Figure 9
