75 ohm in coaxial cable

Why did the cable industry choose 75-ohm coaxial cable — and not 50 ohms? The answer is rooted in physics, engineering tradeoffs, and decisions made decades ago that still define every HFC network running DOCSIS today. Brady Volpe and Ron Hranac break down one of the most fundamental design choices in cable network history: why The post 75 ohm in coaxial cable appeared first on Volpe Firm.

Watch a brief recap of SCTE Tech Expo, John Downey and Brady Volpe break down the latest DOCSIS 4 innovations, Low Latency L4S for gamers, and the role of AI from Harmonic and OpenVault in transforming networks. Gamers will be thrilled to hear how L4S (Low Latency, Low Loss, Scalable throughput) is shaping the The post SCTE EXPO 2025 Recap appeared first on Volpe Firm.

Hey everyone—welcome back! You usually see me talking coax, DOCSIS, MER… but today we’re flipping the script: it’s fiber time. Join Brady Volpe and Andrii Vladyka, Vice President, Growth and Technologies at Harmonic, for a LIVE fiber lab demo like no other! In this session, we’re turning a virtual CMTS (vCMTS) into a PON The post Turning My vCMTS into a PON OLT – Live Fiber Demo with multi-Gbps ONU Speed Test! appeared first on Volpe Firm.

Unlock the next evolution in cable networks with PTP-less vCMTS (virtual CMTS) and DAA (Distributed Access Architecture)! In this in-depth session, Brady Volpe (The Volpe Firm / OpenVault) sits down with Harmonic’s Andrii Valadka and Adam Levy—one of the primary inventors behind PTP-less technology—to break down how this innovation simplifies timing requirements, reduces costs, The post PTPless vCMTS appeared first on Volpe Firm.

Join Brady Volpe on The Cable Climb as he interviews Mike Collins, Product Manager at VeEX, Inc., about his 40-year journey in the broadband industry. From his early days as a cable technician in the 1980s to developing cutting-edge test equipment for DOCSIS 3.1 and 4.0 networks, Mike shares invaluable career lessons and insider The post THE CABLE CLIMB Mike Collins appeared first on Volpe Firm.

Join Brady Volpe and Ron Hranac as they take a technician-level look. Educate cable broadband technicians and engineers on how to effectively use a QAM analyzer to diagnose and resolve issues with SC-QAM (Single Carrier Quadrature Amplitude Modulation) channels in the HFC plant or CMTS environment. If you’re a cable tech, broadband engineer, or just The post SC-QAM appeared first on Volpe Firm.

Brady Volpe and DOCSIS expert John Downey recap the latest from ANGA COM 2025 in Germany. 🇩🇪 We discuss: • Why Europe is going 90% fiber and the impact on HFC • The powerful low latency DOCSIS demo from Harmonic and what it means for streaming and gaming • Charter’s acquisition of Cox and what The post ANGACOM 2025 Recap: Fiber Domination, Low Latency DOCSIS, and Charter-Cox Merger Insights appeared first on Volpe Firm.

Artificial intelligence (AI) is no longer a lab curiosity for cable operators—it’s quietly rewriting the rules of DOCSIS operations. Following is an overview of my take on where artificial intelligence is delivering value today and how it will reshape high-speed data service as DOCSIS 3.1 and 4.0 roll-outs continue across North America and beyond, The post AI: for 10G Reliability appeared first on Volpe Firm.

How do you grow from climbing poles as an HFC line tech to designing next-gen DOCSIS and managed-Wi-Fi networks? In this episode of The Cable Climb, host Brady Volpe sits down with Billy Williams, Design Engineer – DOCSIS & Video Systems at Comporium, to trace a 25-year journey that proves field grit and continuous The post THE CABLE CLIMB: Billy Williams appeared first on Volpe Firm.

We went deep into r/CableTechs, pulled the most‑asked DOCSIS questions, and tackled them on air—now you can watch the full replay! I’m Brady Volpe, joined by cable legend John Downey, breaking down everything from upstream ingress hunts and OFDM migraines to T3/T4 storms and mid‑split mysteries. 🔍 What you’ll learn Why RxMER bounces and how The post Reddits Top DOCSIS Troubleshooting Questions Answered  appeared first on Volpe Firm.