My GRECOM PSR600 has started "skipping" during transmissions, both on conventional and trunked transmissions. Occurs during a transmission..and screen shows "i.e. Scan List 1" (in conventional) or "Trunk ID List name" popping up for a couple mili-seconds every few seconds during a broadcast. Most irritating and cuts out key words. ANY SUGGESTIONS . (Tried checking Priority...does not appear to be the issue .)