So I just bought a RS Por-90 scanner off of EBAY, and set to programming it, but am unable to hear any conversations in the trunk tracking mode. I followed the given instructions as to programming the frequencies and then using the search function to find the active frequency. I even found the fleet map that I wish to scan and entered the addresses for the talkgroups I want to hear into the scan mode. The scanning works, and the correct talkgroup keys up whenever a transmission is made (I can hear the actual transmission as it is simulcast into vHf over my fire pager) but all I get on the scanner is data static instead of actually hearing the conversation over the scanner. Please help me to figure out why this is happening!!!!