RF Modulator (150-1273C) Operation Faxback Doc. # 17496 1. Set the RF Modulator's CHANNEL 3/4 switch to the channel that is not used for regular broadcasts in your area. 2. Turn on the TV and set it to the same channel (3 or 4) as the channel switch on the RF Modulator. NOTE: If you connected a Hi-Isolation A/B switch, set it to the B input position. 3. Turn on the input source (camera, etc.) and set OHMS 1K/75 on the RF Modulator to the position that gives the best picture. Note: For the best results, try both positions to find the best setting. Doing so does not harm your equipment. (CS/all-10/23/95)