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The circuit includes an stereo input which will mix the left and right stereo channels into a single mono signal. The transmitter is easily tunable on the entire FM commercial band (88 - 108MHz) using an adjustable coil and is very stable in frequency.
The transmitter includes a stereo cable with plug for connection to your computer. The circuit can be powered with an adapter (we recommend using our 9V DC adapter DCA-9200) or using a car cigarette lighter adapter as mentioned above. A DC jack is incorporated right on the board for easy connection.
The transmitter incorporates a specially designed power supply which allows it to be connected to any standard 9V DC adapter without introducing the noticeable "hum" which is usually present when operating a low power transmitter through a wall adapter. The power supply uses two-stage filtering in conjunction with two RF chokes and bypass capacitors for best ripple rejection for a "hum" free operation.
We recommend you use our plastic case BX-1598G to install the circuit. The case is a slick gray plastic box which matches the color of most computers.