KDBI 730 is already gone from the Radio-Locator.com website and from FCCdata.org as well. I guess it ain't coming back!
It had a 15,000 watt daytime signal but had to drop to just 500 watts at night. 730 is a clear channel frequency for XEX Mexico City and CKAC Montreal so it has to cut its power. KDBI had no translator but it does have a rimshot FM at 106.3, running 100,000 watts. It's licensed to Homedale, Idaho, but has its tower in Washington State, near the Idaho border. I guess the AM simulcast was for some listeners in Boise unable to hear the FM.