i have a pair of talkabout fr50 i got from my girlfriend, without manuals. i am heading up deer hunting tonite and has a question. i know how to set the channel, but my other handhelds have a 'second channel' (i forget what that is called - code?). i.e., we talk on channel 6, code 7. on this talkabout pair, i could not figure out how to set the second setting, the 7 - or does it matter? i appreciate any help you can give me today. thank you. don