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An audio booster for your hand-held

Introduction

The audio output from many hand-held transceivers and receivers usually leaves much to be desired, so this little amplifier was designed to increase the output at minimal expense.

All that is needed is a separate amplifier and bigger loudspeaker. This is accomplished using a single integrated circuit (IC), a few components, and a loudspeaker from the junk box. This circuit will enable the output from your hand-held to be heard easily in a car.

The circuit

This is shown in Figure 1. It uses only those components necessary to operate the IC amplifier. VR1 is the preset volume control, and varies the signal coming from the ‘External speaker’ jack on the hand-held before feeding it into the ...

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