How to Change Frequencies on an R21 Receiver

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    • 1). Remove the single fastener screw found in the bottom (between the two prongs) of the encasement using a screwdriver.

    • 2). Pull the front of the encasement (the labeled side) off the pronged portion of the receiver. Look for a black switch (located on the bottom edge of the circuit board) with "10K" and "7K" printed to the left of it.

    • 3). Slide the black switch vertically to change the receiver's frequency between 7K and 10K. (These numbers refer to the frequency band of the radio signal.)

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