1.

Remove the cabinet from the unit and unsolder the 11.3258 MMz crystal from the circuit board.

2.

Plug the removed crystal into the expander board and mount the expander by drilling a hole in the cabinet as close to the crystal socket as possible.

3.

Solder the wires from the expander board to the crystal socket keeping the wire as short as possible.

4.

Solder wires on the large crystal to make it fit the expander socket.

5.

Newer models may require replacing capacitor C117 with a 220pf capacitor (included in kit); and tuning coils L20 and L21. This is only necessary if high/low channel oscillation dropout occurs.

6.

Place the provided label to the side of the switch and position the knob to correspond.

1.

Locate resistor R174 on the circuit board and solder a jumper across it.

2.

Cut the red wire from the fine tune control at the board side and solder it to the (+) side of capacitor C84.

3.

Cut diode D52.

4.

Cut the brown wire from the fine tune control (at the board) and solder it to ground.

5.

Unsolder the stripped end of the varactor diode D35 and solder the provided expander choke in series.

6.

Newer models may require the removal of resistor R44 to prevent receive/transmit tracking problems.

1.

Turn the unit on and place the expander switch in the normal position, the mode switch to AM, and the clarifier fully clockwise. Using a frequency counter while transmitting, adjust the three coils to the right of the chip to +1 KHz above center frequency. Notice that each of the three coils are separately adjusted for AM, LSB, and USB.

2.

Adjust each of the trimmer capacitors on the expander board individually for upper and lower channel positions.