Scanner Mode When you are using the P2R as a wireless receiver, Shure recommends that during set–up you first scan for a frequency channel that is free from interference: 1. Unplug the P2T TransMixer and turn off the P2R. 2. Hold down the P2R SELECT button while turning its volume knob past the click (ON). 3. Insert the earphones into your ears and slowly increase the P2R volume until you hear noise. The CHANNEL LED will blink to confirm the unit is in Scanner Mode. WARNING: Increase the volume slowly, as the noise may be loud. 1. Scroll through the eight available frequencies to locate a clear channel. A channel is clear if you hear uninterrupted whitenoise from the P2R. Avoid channels that have no sound. This indicates interference on that frequency channel, which makes it unsuit¬able for use. 2. To exit scanner mode, simply turn off the P2R. When you turn the unit back on it will be set to the channel that you last selected. 3. Set the P2T to the same channel as the P2R.