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| - | [* black] Insert wisdom here. |
|---|---|
| + | [* black] Here's the transmitter mast with the front part of the housing removed. Inside we see an array of infrared LEDs. |
| + | [* black] Next remove the 4 Phillips screws. Two of the screws fasten the metal hinge to the back half of the housing. The other two screws fasten the LED circuit board to the back half of the housing. |
| + | [* black] The third photo shows a closer view of some of the infrared LEDs. There are 12 LEDs in all. |
| + | [* black] The LEDs transmit the audio signal using FM modulation. The carrier frequencies used are 2.3MHz for the left channel, and 2.8MHz for the right channel. The specification for maximum range is 9 meters. |