Darrell's post reminds me that CBer lingo may not seem comprehensible to the non-user. So, this a very quick into:

CB Channels are open (meaning that anyone can speak at any time) such open access could result in chaos unless certain protocols are followed. When someone keys their mike and says "Breaker 1-9"... What they mean is "I would like to break into the conversation on this channel 19" The normal response to this query is "Go Breaker" and then you can make your request or say hello or whatever. It is considered reasonably rude to start yaking on a channel without "asking first." The 10-code (eg: "10-4") is a short-cut voice code often used in some form on the CB.

M.