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    TK-3200/L Help?

    I have come into 3 handsets, 2 are TK-3200s (8 channel models) and one is a TK-3200L (15 channel model.) Whenever I tune any of the handsets to a channel above 3, all it does is put out a tone and flash the LED red/orange over and over. Also, I have noticed that I can't do any of the programming...