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FDD-5/JDD-5 appearance and internal circuit
Source: InternetPublisher:武林萌主 Updated: 2012/08/17
The radio transmitter component FDD-5 and the receiver component JDD-5 are a pair of FM radio transmitter/receiver components used together. The circuit can transmit both digitally encoded signals and audio signals. They are both encapsulated in metal shells. And the internal principle is shown in the figure below.
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