Bought this radio for the Jamboree. It worked very well on the trail, out of sight, over hills and valleys. On the Highway, I can only inderstand about 1/4 of conversations, is it the radio, or just the speaker? What's the deal with extra speakers? Are they powered? Expensive? Most transmissions sound like the speaker is over-driven, very hard to understand. It was crystal-clear on the trail. Never used a CB much, but I figured, since it was in the JEEP, I would listen to it on the road - it didn't keep me much company!