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Last week, a highly anticipated online Q&A session on coaxial cables was successfully held, attracting hundreds of industry professionals, DIY enthusiasts, and individuals seeking to upgrade their home networks. The session featured a panel of three seasoned experts: Dr. Emily Carter, a telecommunications engineer with 15 years of experience in cable technology; Mark Davis, a senior network infrastructure consultant; and Sarah Liu, a product development manager at a leading coaxial cable manufacturer. Over the course of 90 minutes, the experts addressed a wide range of questions, providing practical insights and actionable advice that went beyond basic product introductions.
Dr. Emily Carter kicked off the Q&A by tackling one of the most frequently asked questions. “Fiber optic cables are often hailed for their ultra-high bandwidth, which is ideal for gigabit-plus internet speeds,” she explained. “However, coaxial cables have their own advantages that make them a strong choice for many households. First, cost-effectiveness: upgrading existing coaxial infrastructure is typically cheaper than installing new fiber lines, especially in older neighborhoods. Second, compatibility: most legacy home devices, such as cable modems and satellite TV receivers, are designed to work with coaxial cables, eliminating the need for expensive adapter replacements. Third, signal stability over short to medium distances—coaxial cables maintain consistent performance for distances up to 100 meters, which is more than enough for most homes.” She added that for users with internet plans below 1 Gbps, coaxial cables can deliver speeds that are practically indistinguishable from fiber in real-world use.
Mark Davis, drawing on his experience in network setup, highlighted common installation pitfalls. “One of the biggest mistakes is bending the cable too tightly,” he warned. “Coaxial cables have a minimum bend radius—usually 4-6 times the cable diameter—and exceeding this can damage the inner conductor and shield, leading to signal loss. Another error is using low-quality connectors or failing to properly terminate the cable. A loose or poorly crimped connector can introduce interference and reduce signal strength. Additionally, avoid running coaxial cables parallel to power lines or other sources of electromagnetic interference (EMI), as this can cause signal degradation. If you must cross power lines, do so at a 90-degree angle to minimize EMI impact.” Davis also recommended using RG-6 coaxial cable for home internet (instead of the older RG-59) due to its thicker conductor and better shielding.
Sarah Liu addressed a frustration shared by many users. “Signal drops can stem from several causes,” she said. “First, check for physical damage: look for cuts, kinks, or corrosion on the cable or connectors. Even a small nick in the outer jacket can allow moisture to seep in, damaging the shield. Second, signal splitting: if you’re using a splitter to connect multiple devices (e.g., internet and TV), too many splits can weaken the signal. We recommend using a powered splitter for more than two devices to amplify the signal. Third, outdated equipment: an old cable modem that doesn’t support DOCSIS 3.1 (the latest coaxial standard) may struggle to handle modern internet speeds, leading to intermittent drops. Finally, signal interference from nearby devices like microwaves or cordless phones—try relocating the modem or using a shielded coaxial cable to mitigate this.”
Dr. Carter provided a glimpse into the future of coaxial cables. “The industry is focusing on two main areas: enhancing bandwidth and improving sustainability,” she noted. “With the development of DOCSIS 4.0, coaxial cables will soon be able to support speeds up to 10 Gbps downstream and 6 Gbps upstream, closing the gap with fiber for high-speed applications. This is achieved through advanced modulation techniques and improved shielding materials. On the sustainability front, manufacturers are moving toward using recycled materials in cable jackets and developing cables that are easier to recycle at the end of their lifecycle. We’re also seeing the integration of smart technology—some new coaxial cables come with built-in sensors that can monitor signal quality and detect damage, allowing for proactive maintenance.”
Sarah Liu clarified the video streaming capabilities of coaxial cables. “Yes, coaxial cables are more than capable of handling 4K and even 8K video,” she confirmed. “The key specification to look for is bandwidth—4K streaming requires a minimum bandwidth of 25 Mbps, while 8K needs around 100 Mbps. Most modern RG-6 coaxial cables can support bandwidths up to 1 GHz, which is more than sufficient. However, to ensure optimal performance, choose a cable with a copper-clad steel or solid copper conductor, as these materials offer better signal transmission than aluminum. Also, look for cables with double or triple shielding (braided shield + foil shield), which reduces interference that can cause pixelation or buffering in video streams. For long runs (over 50 meters), consider a low-loss coaxial cable, which minimizes signal over distance.”
The session concluded with the experts agreeing that coaxial cable remains a versatile and reliable technology, with ongoing innovations ensuring it stays relevant in the age of high-speed internet and advanced media. “The goal of today’s session was to demystify coaxial cables and help users make informed decisions,” said Mark Davis. “Whether you’re setting up a home theater, upgrading your internet, or troubleshooting existing issues, understanding the basics of coaxial technology can save you time and money.” A recording of the Q&A, along with a detailed FAQ document, is now available on the event’s official website for those who missed the live session.
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