Thanks for the response Don, I cant find anything in the manual or online about it, all it says is that it indicates the channel is offline, the cps does not give any clues either, it does change but only when you put a negative or positive offset in the channel info, the blue arrow, the minus and the plus symbol, i'll have a look and see if its something staring me in the face, It's strange as it's only this one frequency, I double and treble checked the slot and colour code and I also get the same info on receiving that frequency on my whistler TRX2, as i say its a weird one because if i program the channel as simplex the blue arrow appears and if i TX the scanner receives it and i can hear, but i can hear a response on my scanner and the 1701 green led lights up but no sound from the 1701. these things are sent to try us,,lol