All frequencies are programmed into bank channels(conventional and trunked) Scanlists are where you program the talkgroups for trunked systems, ( two to five digit numbers that are assigned to PD, FD, EMS, etc.). Conventional frequencies are the 155.XXX, 160.XXX, 450.XXX that are programmed into separate bank channels like the trunking frequencies are. Knowing that this is a Uniden product, the frequencies for trunked have to be programmed in a separate bank by pushing the E/PGM button, then the TRUNK button. All of your bank numbers will flash, then pick which bank you wish to program in the Control Channel frequencies, then you need to pick what type of system to be programmed in: E800, E900, E-Hi (vhf), E-UHF. This is on page 24 of your manual. Once you get the bank setup with the type and mode: MOT, ED, LT, enter the frequencies as stated in the manual. Page 25 tells you how to put in the ID's. When the bank is set to trunk, you cannot add conventional frequencies. Another bank needs to be used for VHF and UHF. I have owned many uniden scanners over the years, Pro-90, BC245, BC780, that are trunking scanners. Unless you buy one of the GRE made scanners, i.e. Pro97, Pro164, Pro2055, Pro163, or, the higher priced digital scanners,(GRE or Uniden)like the Pro96, BCD396, you will not be able to combine trunked and conventional. Hopefully, this answers why you hear the trunked system as if it were a conventional system.
Larry