AM Short Wave Radio Kit (280-0176) Installation Faxback Doc. # 6944 Spring terminals The spring terminals provide an easy way to make electrical connections without the use of solder. From the top side of the cardboard panel, install 33 spring terminals into the 33 large, numbered holes. The smaller end of the spring should be at the bottom. To make installation easier, use the pointed end of a pencil or ballpoint pen to push the spring through the holes then twist them slightly. You will make many of your connections on the back side of the cardboard panel. As you install each spring, mark the number of each terminal on the back side of the panel. Resistors You will mount the 3.9K ohm resistor first. It is banded with 4 colored stripes: orange, white, red, gold. Mount the resistor by bending its leads and inserting them, from the top of the cardboard panel, through the holes next to the schematic symbol. Now turn over the panel and connect each lead to 21 and 27. Simply bend the spring to one side with the long-nose pliers or your finger and insert the wire between the coils of the spring. The first connections are always the hardest, but you will soon learn to do this easily. Remember, you will identify the resistors by their colored bands. Connect the 10K ohm resistor (brown, black, orange, gold) to terminals 23 and 24. Connect one of the 330K ohm resistor (orange, orange, yellow, gold) between terminals 18 and 19. Connect the other 330K ohm resistor (orange, orange, yellow, gold) to terminals 28 and 29. Connect one of 5.6K ohm resistor (green, blue, red, gold) to terminals 24 and 25. Connect the other 5.6K ohm resistor (green, blue, red, gold) to terminals 27 and 28. Connect the 100 ohm resistor (brown, black, brown, gold) to terminals 30 and 32. Connect the 1K ohm resistor (brown, black, red, gold) to terminals 26 and 27. Capacitors From the top of the cardboard panel, insert the two leads of each capacitor through the holes next to its schematic symbol. Then, on the back side of the panel, connect the leads to the designated spring terminals. Mount one of the 0.1microF capacitors (large, marked .1 or 104) to the holes above terminals 17 and 18 and connect its leads to 17 and 18. Mount the other 0.1microF capacitor and connect its lead to 24 and 29. Mount the 0.05microF capacitor (large, marked .05 or 503) and connect its lead to 16 and 20. Mount the 0.002microF capacitor (small, marked .002 or 202) and connect its lead to 28 and 31. Mount the 0.001microF capacitor (small, marked .001 or 102) and connect its leads to 28 and 29. Mount the 100pF capacitor (small, marked 100 or 101) and connect its leads to 8 and 9. The remaining capacitor is electrolytic. This means it must be connected observing the proper polarity (+ and -). The side of the capacitor with the minus (-) lead is marked with a vertical stripe and minus (-) signs. Of course, the other side is (+). Connect the 33microF capacitor to terminals 27 (+) and 33 (-). Now go back and carefully check your work. Be sure you have positioned each part in the right place. Be sure the minus (-) side of the electrolytic capacitor is toward the proper terminal. Double-check these parts. On the bottom side, cut off any excess wire ends. Transistors Transistors each have 3 leads. Each lead MUST go into the correct hole in Panel Board. Pick up the Transistors and look at the bottom, where the leads come out. Now, look at the Transistor, with the flat side toward you. Make a mental note of the position of each lead, E, C and B. OK, got that? Now let's proceed. Mount a Transistor marked C945 or 828 or C1815 or C711 or 9013 or 9014 between 18, 19 and 20. Position it so the flat side is toward spring 25. Insert the leads through the holes provided. On the bottom, connect the upper lead to 19, the center lead to 18 and the lower lead to 20. Mount another Transistor between 28, 29 and 30. Position it so the flat side is toward 28. Insert the leads through the holes provided. On the bottom, connect the left lead to 29, the center lead to 28 and the right to 30. Mount the remaining Transistor between 28, 31 and 32. Position it so the flat is toward 31. Insert the leads through the holes provided. On the bottom, connect the left lead to 28, the center to 31 and the right 32. Since the Transistors are so important, you must be sure you get them in correctly. Double-check them to be sure! Be sure each lead goes into the correct hole and that you don't cross over the leads on the bottom side. Diode and Choke Coil The diode must be mounted only one way. From the top of the cardboard panel, insert the two leads of the diode through the holes next to the schematic symbol. Banded end to terminal 16. Connect the leads to terminal 16 (banded end) and 17. Mount the choke coil and connect its leads to 21 and 22. Bar Antenna and Antenna Coils Examine the antenna Coils. They have some very thin wires coming from them. Handle them with care. Insert the Holders into the holes of the Board and rotate them to accommodate the coils. Position the Coils as shown. Insert the leads down through the holes provided. Slip the Bar into the SW1 (gold) and AM Coils and the holders. Don't mount the SW2 (red) Coil on the bar. Turn the Panel over very carefully connect the wires from the Antenna Coils as shown: Gold wires (SW1 Band) to terminal 1 and 2. Red wires (SW2 Band) to terminal 2 and 3. White (or other light color) wire (AM Band) to terminal 4. Black wire to terminal 5. Yellow wire to terminal 6. Green wire to terminal 7. Note: Be sure to connect the tinned end to each spring. Do not let wires cross each other. SW Tuner Assembly Board You must use extreme care when you handle and mount this assembly - try not to touch any parts on the Board. Hold it only by the edges. Mount the SW Tuner Assembly to the bottom of the Panel Board. Insert the two long screws from the top of the Panel. Turn the panel over and mount the spacer on the screws. Then place the Assembly Board on the screws and tighten each screw and nut with a Phillips type screw-driver and long-nose pliers. Do not over tighten. There are five wires coming out of the Tuner assembly. Connect the Red wire to spring terminal 11. Connect the Green wire to spring terminal 12. Connect the White wire to spring terminal 13. Connect the Gray wire to spring terminal 14. Connect the Blue wire to spring terminal 15. Tuning Capacitor Mount the tuning Capacitor from the bottom of the panel. On the top, fasten it with two small screws. Mount the Turning knob on the Tuning Capacitor. Make sure the red mark is at the left side around the shaft when you rotate the knob counterclockwise. Fasten the knob with a small screw. Turn the Panel over and on the bottom, connect the Tuning Capacitor leads to terminal 9 and 10. Battery Holder Mount the Battey Holder to the top of the Panel Board. Use the long screw (from the top of the Panel Board). Fasten with a nut. Connect the Red wire of the Battery snap to terminal 26 and the Black wire to terminal 33. This completes most of the wiring on the Panel Board. Before you finish up, check your work once more: 1. Be sure the transistor leads are connected properly. 2. Cut off any remaining excess wire ends. Wiring Connect wires on the top, panel as follows: A) If you want the AM Radio to work, connect the following wires: Connect Red wire between 4 and 9. Connect Red wire between 5 and 10. Connect Red wire between 18 and 23. Connect Red wire between 20 and 30. Connect Red wire between 22 and 23. Connect Blue wire between 6 and 19. Connect Blue wire between 30 and 33. Connect Green wire between 7 and 16. Connect Green wire between 9 and 20. B) For both SW1 and SW2 wiring: Connect Blue wire between 9 and 14. Connect Red wire between 10 and 13. Connect Blue wire between 11 and 27. Connect Blue wire between 30 and 33. Connect Green wire between 12 and 25. Connect Green wire between 15 and 30. C) If you want the SW1 Radio to work, connect the following wires: Connect Red wire between 1 and 12. Connect Red wire between 2 and 14. D) If you want the SW2 Radio to work, connect the following wires: Connect Red wire between 2 and 12. Connect Red wire between 2 and 14. Connect the Earphone leads to terminal 26 and 31. Snap one 9V battery into the Battery Holder (on the Panel Board). Be sure to install the battery with the correct polarity-as shown in the Battery Holder. (LB/all-08/18/94)