A CB radio that is not receiving signals may have several causes. The first one is the antenna. Usually, problems with this device result from improper installation or a high SWR. The second reason could be a bad wired headset cable or blown speaker. If this problem persists after troubleshooting these issues, contact a service center or trained technician for assistance. After all, your CB will be useless without proper wiring.
Another possible cause is that the antenna isn’t grounded correctly. Make sure that your antenna is properly grounded. CB radio antennas need to be grounded to the vehicle’s frame to receive signals. If they aren’t, the SWR reading will be high. Next, check the antenna. Ensure that it is tuned for CB use. If the antenna is properly installed, it will help improve reception. If the antenna is not placed correctly, it will negatively affect the signal.
Moreover, you must make sure that your antenna is properly grounded to the vehicle’s frame. If it isn’t, your CB radio will receive less signals. If your radio has an antenna with a low SWR reading, you should consider using another one. Also, make sure that the coax cable is grounded to the vehicle’s frame. Dirty coax cable will reduce the signal.