I have a 1991 Electraglide Ultra Classic With factory radio and cb. Most late model Electraglides have two antenna posts on the rear baggage compartment and mine only has one. I have spoken to the dealer and they said it should have two. However I have seen photos of other baggers with only one installed. It appears that it came stock with one antenna post. My question is if it did come stock with only one antenna, does the cb and radio share only one antenna? I didn't think that was possible. It apears the radio(AM-FM) reception improves with an antenna installed on the post. Where is the cb antenna location? This is a perfect machine. I have waited my whole life for this motorcycle and I wouldn"t settle on any imitations. It was worth the wait. BUY AMERICAN.