Volpe Firm

Updated November 3, 2026. Originally published April 23, 2021. The original video, podcast, slides and comments are preserved below; use this revised article for current troubleshooting guidance. A dynamic range window warning does not, by itself, tell you why a subscriber lost service. It tells you to look at the cable modem’s upstream power commands

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The Road to DOCSIS 4.0. Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco and special guest Jeff Finkelstein Executive Director of Advanced Technology of COX Communications. How to go from sub-split, to targeted mid-split or high-split, then finally to ultra-high-split and 1.8 GHz. Ask any questions you

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OFDMA Upstream Troubleshooting. Tips, suggestions and recommendations. Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco. More and more operators are introducing OFDMA into their networks and experiencing a learning curve with its introduction. Find out ways to overcome these issues and ask any questions you may

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Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco, show real world examples of testing Coax, Taps and other passives.  The discussion is on all things DOCSIS. NanoVNA (Vector Network Analyzer) testing: General intro Test equipment RF basics Test One Diplex filter explained active equipment has a diplex

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Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco, show real world examples of testing Coax, Taps and other passives.  The discussion is on all things DOCSIS. NanoVNA (Vector Network Analyzer) testing: General intro Test equipment Test for bad cable, passives and amps Test return loss, insertion

The post NanoVNA testing Taps, Coax, passives and more part one appeared first on Volpe Firm.

Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco, explore 204 MHz in OFDMA deeper with a brief overview of the differences between OFDMA and OFDM.  Also with a discussion on LEO satellites Starlink by SpaceX and answer more questions from our listeners. The discussion is on all

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Follow part 3 of this series on cloud native virtualization of DOCSIS and broadband networks? Brady Volpe and Asaf Matatyaou, Vice President, Solutions and Product Management, Cable Edge Business at Harmonic, explore this topic as it is becoming a big focus in the way we deploy and manage our networks through cloud native virtualization.

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This is episode 68 of Get Your Tech On, our show on All Things DOCSIS.  I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. Listen in on the conversation with Brady Volpe as he explores what is system powering. How system power is impacted in the age of Remote-PHY (DAA) and more.

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This is episode 67 of Get Your Tech On, our show on All Things DOCSIS.  I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. Join in the conversation with Brady Volpe as he explores the many ways cable operators can benefit from PNM and services. With John Downey CMTS Technical Leader at

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This is episode 66 of Get Your Tech On, our show on All Things DOCSIS.  I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. Join in the conversation with Brady Volpe as he explores the many ways cable operators can benefit from PNM and services. With John Downey CMTS Technical Leader at

The post PNM services and benefits to Cable Operators appeared first on Volpe Firm.