The 5 auto presets on the PRC-2 receiver can be erased by following this simple procedure:











1.  With power OFF, depress the volume knob and turn the PRC-2 unit ON. Continue to hold the volume knob down until the LED starts rapidly blinking. The memory is now erased and the PRC-2 unit will go into scan/search mode.
2.  Refer to the steps below to set the presets to new frequencies from a PTX-3 or PTX-2 transmitter.  
3.  The unit goes into program mode and does a scan/search. Previously programmed frequencies will be automatically skipped. When the unit stops on a new frequency audio from the transmitter will be heard in the earphone and the LED will stop blinking rapidly and will change to a slow blink mode.The unit is now waiting for an operator decision. You must now decide to either SKIP or STORE the frequency (step 4 or 5 below.) Switching the power to OFF without storing will delete the frequency. 4.  To SKIP the frequency, depress the knob briefly and the scan/search will resume. 5.  To STORE the frequency into a channel memory, depress the knob until the LED blinks the new channel number, then release the knob. The frequency is now stored in an open channel.   6.  The unit will continue scan/search for other frequencies.  To store more frequencies repeat steps 4 and 5 above. Up to 5 frequencies can be stored in memory channels. 7.  When all desired frequencies are stored switch the power to OFF for a few moments, then switch back to ON. The unit will default to the channel number set by the switches and resume normal operating mode.