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Common Signal Interference Issues with RG6 Aerial Cable and How to Fix Them

RG6 aerial cable is a commonly used type of coaxial cable for transmitting television signals, often used for over-the-air (OTA) antennas. However, various factors can interfere with signal quality and cause issues such as weak or intermittent reception, pixelation, or complete signal loss. This article will explore the most prevalent signal interference issues with RG6 aerial cable and provide practical solutions to resolve them.

Splitters and Taps

Splitters and taps are devices that distribute the signal from a single source to multiple outlets. However, improper installation or usage of these devices can cause signal loss or degradation. Incorrectly connecting the splitter or using a splitter with too many outputs can weaken the signal, resulting in weak reception or intermittent signal drops.

To mitigate interference from splitters and taps, ensure that the splitter’s output count matches the number of connected devices. Additionally, prioritize using high-quality splitters and avoid daisy-chaining multiple splitters to minimize signal attenuation.

Signal Overloading

Signal overloading occurs when the incoming signal strength is too high, causing distortion and signal degradation. This can result from living near a high-power transmitter, using an overly sensitive antenna, or having excessive amplification in the signal chain. Signal overloading manifests as pixelation, color distortion, or ghosting images.

To address signal overloading, consider using an attenuator to reduce the signal strength. Attenuators are devices that reduce the signal level without affecting the frequency. Another solution is to adjust the antenna’s height or orientation to optimize signal reception.

Electrical Interference

Electrical interference from nearby power lines, electrical appliances, or fluorescent lighting can disrupt the signal transmitted through RG6 aerial cable. This interference causes crackling or humming noises, ghosting, or streaking on the TV screen.

To minimize electrical interference, keep the RG6 cable away from potential sources of interference. Use shielded RG6 cable, which has a metal layer that helps block out electromagnetic interference. Additionally, consider using ferrite cores, which are cylindrical devices that wrap around the cable to absorb electrical noise.

Physical Damage

Physical damage to the RG6 aerial cable can severely degrade signal quality or result in complete signal loss. Damage can occur due to factors such as accidental cuts, animal bites, or extreme weather conditions. Damaged RG6 cable exhibits symptoms such as intermittent signal drops, weak reception, or no signal at all.

To prevent or repair physical damage, inspect the RG6 cable regularly for any cuts or breaks. Use weather-resistant connectors and cable clamps to secure the cable and protect it from the elements. If a damaged section is identified, replace it with a new cable segment and ensure proper connections.

Grounding Issues

Improper grounding of the RG6 aerial cable can lead to signal interference and safety hazards. Grounding provides a path for electrical current to flow safely to the earth, protecting equipment and preventing overvoltage. Loose or disconnected grounding connections can result in electrical noise and signal disruptions.

Ensure that the RG6 aerial cable is properly grounded to an earth ground rod. Verify that the grounding connection is tight and secure. Grounding blocks or grounding straps can be used to establish a reliable grounding path for the cable.


Signal interference issues with RG6 aerial cable can significantly impact the quality and reliability of television reception. Understanding the common causes of interference and implementing the appropriate solutions can effectively resolve these issues. By addressing splitters and taps, signal overloading, electrical interference, physical damage, and grounding, individuals can enjoy optimal signal quality and uninterrupted TV viewing.

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