Sounds like your software only downloaded the control channels, not all the site's frequencies. I'm not sure about the RS or GRE scanners, but I think firmware versions in the past year or so on the Uniden models use control-channel-only mode by default.I went and dowloaded the Calgary Data base from RR. It was not the same as the list posted. For example the downloaded version had only 2 frequencies for the airport site while the data base had many more.
If you are in motion, the GRE will do a better job on Calgary's system than a Uniden scanner, simply because the Unidens' implementation of multi-site trunking does not perform as well as the GRE's (IMO). GRE works more like a true multi-site (Smartzone) radio than a scanner just happening to scan multiple trunk sites (like Uniden does). If you're stationary and locked on one site, either one is equally acceptable.Edmscan you may be correct re the GRE's. I hear the P25 audio in Calgary is much clearer on them than the Unidens.