If the antenna is not connected properly to your radio the whole system will not be able to detect meteors. Follow these steps if you are able (you may have to have someone else access the roof to look at the antenna itself).

1. Go up to the roof to make sure your antenna is standing up and the cable is attached.
2. Check the cable connection to the antenna to make sure it is tight and the two wires have not broken from wind or other causes.
3. If you cannot go up to the roof to look at this, (you may not be able to get permission from your school to do this) go outside and locate your antenna by looking from the ground. See if you can see any obvious problems. If you find any, they will need to be fixed.
4. Inside the classroom, check the cable connection at the back of the radio. Make sure the cable is plugged into the back of the radio. Check the cable connection (if there is one) between the short section into the radio and the long section that goes out of the classroom to the roof. Spin the couplers on the coax ends to break down any oxidation that may prevent the signal from traveling along the wire. Make sure the connection is tight when you finish this operation.
5. The antenna and cable should be ready to do their job now.