Sound from a Radio
Who hasn’t wished that the sound from the DUGA could be at least a little louder and better? You probably immediately thought this was yet another complicated, incomprehensible amplifier circuit, requiring a small pile of components and extensive electronics knowledge. Well, none of that!
You were mistaken! This is the simplest way to amplify sound from the DUGA.
No, not from a cassette recorder, but from a... RADIO! It’s very easy to do. All you need is a radio, a little wire, a soldering iron rated up to 25 W, a larger 0.3–0.4 W speaker, a banana plug and a Spektrum. Since radios come in different types and sizes, over the next few issues we’ll explain how to connect the DUGA to your radio. The first, and easiest to adapt, is the radio shown in Fig. 1.
The radio consists of two separate units connected to each other. The left-hand part is the amplifier and contains the battery compartment; the right-hand part is the part of the radio we don’t need. First, open the radio—specifically, the left-hand part. You’ll see a circuit board with a potentiometer, a switch, several transistors, and so on.
On printed circuit board 1, there are two wires at the edge of the wider part of the board: blue 5 and white 6 (see Fig. 2).
Solder wires 7 and 8 to those two points, taking care not to burn the circuit board or its components. Once you’ve more or less successfully done that, solder the wires to the two-pole banana plug 9. And that’s not all: since the earpiece doesn’t produce enough sound, solder one wire to each of the points where the earpiece wires are connected, then connect a larger speaker.
Load your favourite game, switch on your favourite radio, find a radio channel with no music, and enjoy. One more thing: if you connect 4.5 V to the radio, at the battery terminals, the sound will be even louder.
And if you don’t have this type of radio, wait for the next issue of your magazine—and play in... silence.
For information, contact:
Čosić Saša
Podgaj 11
71000 Sarajevo
Telephone: 071/33-049
Share your thoughts about the article