Located within the Fullerton area and often use the Santiago Peak repeater (CH 20). Today I was monitoring it and it sounds like there is an another repeater overlapping the Santiago Peak repeater. The RP that is overlapping, people are not saying their call signs at all. As well I don't see any repeater within the area on mygmrs.com on that frequency. Never really had an issue, but whatever this repeater is, no one is identifying with call signs and been saying slurs. Does anyone know what repeater it is? Can't really filter them out since Santiago peak doesn't have a RX filter and they're transmitting nonstop.