When I am scanning the radio stops on the weather channel and is reciveing all the time but you cant hear what it is reciveing.
I can't speak from doing this, but let me pontificate. Scanning on a TK-2180 goes something like this. With channel "A" that has QT decode programmed and no other signaling squelch enabled the sequence is something like this:
1) Channel A has no activity, scan continues.
2) Channel A has activity, scan stops and QT is checked. QT matches and speaker is unmuted.
3) Channel A has activity, scan stops and QT is checked. QT does not match. The channel is now flagged.
Scan continues. On each cycle of the scan list, if activity is present, the channel is bypassed
(it assumes it still has the wrong QT). When activity on channel stops the scan sees this. It take three
(I think) passes of the scan list without activity to reset the flag and the scan will stop on the next carrier
of channel A to check QT again.This is done to keep the scan speed up. It takes time to stop and check QT.
You can see how this works on fast continuous data like QT/DQT and I suppose LTR. I would not make sense with two tone.
Your WX channel has no QT, just two tone. It is a constant carrier. Your radio stops scan because there is no QT mismatch to disqualify it and continue scan. However without the tone, the signaling squelch condition is not met and the speaker remains muted. Sorry but methinks scanning the WX channel just won't work.