Hi and thanks in advance for any helpful replies. I have a brand new pro-106 and am a new subscriber to RR, have win500 on my computer and imported most of the frequencies for my area (Lincoln/ Pott counties) into my scanner and have an external antenna (discone) on a pole outside. Conventional channels work fine but the large State of Oklahoma trunked system in the RR database won't work. If i watch the display, occasionally the scanner locks onto a talkgroup and shows the ID, shows a good signal strength but has no audio at all. I selected all the control channels from the RR database, but just some of the Talkgroup ID's. Please help.