This transmitter circuit uses PLL method to generate stable frequency and the output power is selectable from 1 to 4 watts via an on-board jumper switch. It's designed using wide-band power amplifier technology, this eliminates the need to tune up the transmitter to "peak the power".
This PLL FM transmitter has an "Out Of Lock Power Down" circuit that will automatically reduce the output power to zero so that frequency adjacent radio stations will NOT be affected. A clean start up every time is assured without any disturbance to other channels.
The sound quality of the FM transmitter will match the most expensive exciters and walk over the rest! The response of audio frequency is absolutely level and linear to provide only the highest transmitter FM modulation quality. (PLL FM Transmitter Technical Manual)
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