![]() These can be purchased fairly cheaply on eBay, or you could make one your self. Use an isolated audio interface for the best results. This, however, is not recommended as any other room sounds will be picked up and either transmitted or interfere with the received signal. In fact, you can miss out the audio lead and use the microphone to pick up the sound from the speakers. Because every PC, laptop and mobile device has built in sound capability, all you really need is your radio and an audio lead to connect from the sound device to the radio. For some, this has been the difference between being able to make contacts on air or not. ![]() Over the past few years, the number of operators using one of the numerous forms of data (or digimode) has exploded. ![]() Digital modes are becoming more and more popular on the amateur bands.
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