The qualifier for your problem is not drilling through the body. I'd like to provide some suggestions, but can not because of this limitation. I've had a CB in a coach since 1978. Also, I've installed dozens of CB antennas, always drilling a hole in the body or roof (customer's choice). I've never had a leak in my or any coach I've made the install on. If you eliminate this limitation and would like some suggestions, PM me. I do not usually monitor this owners forum.
Can you help us understand why you don't want a hole drilled in the coach?
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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