Static noise may develop in the audio of UHF radios and analog television sets when interference occurs or reception becomes poor. At best, such static annoys listeners by reducing the audio quality. At worst, it renders words unintelligible and forces UHF 2 way radio users to repeat themselves. Fortunately, it is often possible to eliminate UHF static noise.
1 Verify that the antenna wire remains securely connected to the receiver’s antenna jack or screws. Inspect the wire for damage or disconnection from the antenna, especially if you did not experience static noise in the past. Replace or reconnect the wire if needed.
2 Inspect the UHF receiver for problems. Ensure that it remains finely tuned to the desired frequency. If it produces static when tapped or moved slightly, a loose connection may be present.
3 Adjust the antenna to determine if a different angle or direction will eliminate the static. If your receiver uses a telescopic antenna, shorten it to the minimum length for enhanced UHF reception.
4 Move the antenna to a new location. If the receiver has a built-in UHF antenna, relocate the receiver. Place the antenna at a higher altitude; the height of the antenna has a very significant effect on UHF receiving and transmitting distances.
5 Improve the placement or type of the antenna wire. WTIU television recommends using standoffs to hold twin-lead (300 ohm) wires a minimum of 3 inches away from metal objects like drainpipes and gutters . It also indicates that a short antenna wire works best for UHF. Use shielded cable to help eliminate static from interference.
6 Install a better antenna. Keep the old antenna at least until you verify that the replacement yields better reception. To eliminate the most static, obtain a model specifically designed for UHF reception. UHF-only antennas generally bring about better results on this band than combined VHF/UHF or VHF/UHF/FM units.
7 Move the antenna and receiver to a location closer to the transmitting station you intend to receive, if possible. Unless a very strong, nearby source of interference remains present, moving close enough to the transmitter will eliminate static noise.