Personally, I've only successfully used Close Call once, and I was actually sitting in the McDonald's lounge. I found the frequency almost immediately. It was almost like a switch; as soon as I walked out the door, the signal disappeared. I'm not sure if whatever they put int the walls prevents it from going outside of the building, but that's what it seemed like to me. Maybe it's just so low-powered, it won't go through the walls. So if you're going to use Close Call (or equivalent), your best chance would probably be to sit in the lounge with a pair of small, discrete headphones or earphones, and scan for the frequencies that way.
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Timothy D. Bennett/ KJ4MUY
Cape Coral, Lee County, SW FL
Uniden BCD396XT, ICOM IC-706MKIIG
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