My SDS100 not working when I program by zip on Nextgen for Imperial County. San Diego works but not Imperial County. Non of the repeaters in Imperial County have signal except the El Centro repeater located at the Sheriff station and that has good signal but picks up not one single talkgroup. East Simulcast works just fine. Now when I program it myself on a favorites list everything works just fine and the repeaters within range now have signal. Talkgroups do come in just fine but I need to Program the names of the talkgroups. Would anyone happen to know why the preprogrammed database by the sentinel software does not work for Imperial County?