coax Archives

20 11, 2024

Understanding Unity Gain

Mia Colabrese2024-11-20T16:11:13-05:00November 20th, 2024|

Join us for our next livestream event, understanding unity gain is an important concept that applies to the forward and reverse paths of most cable networks. Without it, network performance can be degraded. In this episode, Brady Volpe and Ron Hranac will walk you through the principles and practices of unity gain, what it is, and the importance of managing it in our networks. The goal of unity gain is to maintain the same signal strength from the headend (the central distribution point) all the way to

14 08, 2024

Very big and very small numbers

Mia Colabrese2024-08-14T11:02:10-04:00August 14th, 2024|

RF with Ron and Brady - This topic is a little different than previous presentations, but is important considering the widespread use of very big and very small numbers in cable. Ours is a world of numbers, and in cable we tend to use a lot of really big and really small numbers. In reality, it’s hard to grasp just how big or small numbers can be. Examples include the speed of light (a very big number) and RF signal levels in millivolts or microvolts, or even nanowatts

13 06, 2024

Coaxial Cable Impedance, Attenuation and Beyond

Mia Colabrese2024-06-13T09:40:50-04:00June 13th, 2024|

Some people say coax but Ron likes coaxial cable. Coaxial cable has been a key component in our networks dating back to the industry's early days. As such, it's easy to take coax for granted without really understanding just what it is. Here's your chance to learn more about coaxial cable, along with a high-level look at some of its characteristics such as impedance, attenuation, velocity of propagation, DC loop resistance, and more. Please tell us your thoughts in the comments. Coax or Coaxial? 📡 --- Ron's Bio:

22 02, 2023

Are Staples in Coax Cable Impacting My DOCSIS speed?

Mia Colabrese2023-02-22T17:43:08-05:00February 22nd, 2023|

I recently posted a YouTube short (https://www.youtube.com/shorts/n5ucjCb-iGA). ) about how staples in coaxial cable can cause micro-reflections and interfere with subscriber modems. The video was well-received, and I received a lot of feedback, including real-world experiences and questions about the implications of these issues. Let’s take a closer look at this subject. Staples in coax cable meets the real world Let’s start off with an example of real-world feedback I received. The example goes as follows: “I’ve had calls for this. Poor US voice quality. My worst

24 09, 2019

DOCSIS Cable Connector Basics

Mia Colabrese2021-08-15T18:35:46-04:00September 24th, 2019|

Craft issues in coax can create havoc later on... Happy Friday Everyone. Today is September 20th and this is episode 51 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey, who will strike a pose at this years SCTE EXPO. John is also CMTS Technical Leader at Cisco Systems, welcome John. Also with us is Rich Maroney Product Line Manager Coaxial Cable from PPC. Today we are going to discuss

19 08, 2019

DOCSIS 3.1 Upstream

Mia Colabrese2021-08-15T18:39:37-04:00August 19th, 2019|

Happy Friday Everyone. Today is July 12th and this is episode 50 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey. John is also CMTS Technical Leader at Cisco Systems, welcome John. Todays show overview: FDX / CBR-8 - Is it dead at CISCO? Node plus Zero DOCSIS 3.1 Upstream - General discussion Low Latency / ESports OFDMA Remote-PHY ATDMA 85Mhz systems Bonding groups Profiles in the upstream Different and challenging

19 07, 2019

T3 & T4 Timeouts Cable Modem Registration – Back to Basics

Mia Colabrese2021-08-15T18:42:34-04:00July 19th, 2019|

Happy Friday Everyone. Today is July 12th and this is episode 49 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey, who recently carried a CBR-8 on his back, up Mount Kilimanjaro to ensure broadband service. John is also CMTS Technical Leader at Cisco Systems, welcome John. Todays show: Upstream MER registration explained Cable modem registration T3 and T4 Timeouts In The News: https://www.lightreading.com/cable/ccap-next-gen-nets/comcast-commits-millions-to-harmonics-cableos-platform/d/d-id/752671 Comcast Commits Millions to Harmonic's

24 06, 2019

Low Latency and Virtualization

Mia Colabrese2021-08-15T18:44:51-04:00June 24th, 2019|

Happy Friday Everyone. Today is June 14th and this is episode 48 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey. John is also CMTS Technical Leader at Cisco Systems, welcome John. AQM (active que management) Mini slot proactive grant service OFDMA John thank you for your time today. This was a great episode. Our next Episode 49 is scheduled in July 12. We do our best to bring our

16 05, 2019

DOCSIS 3.1 and FDX

Mia Colabrese2021-08-15T18:47:04-04:00May 16th, 2019|

Happy Friday Everyone. Today is May 10 and this is episode 47 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us today is: John Downey, CMTS Technical Leader at Cisco. Today’s topic is a discussion on DOCSIS 3.1 and FDX. But also: Ethernet over Coax Overlay Modulated Signal Over coming barriers point to point wireless FDX brings more upstream speed but needs R-PHY to go 1GIG service 4 upstream channels from 5 to

18 03, 2019

PNM Round Table with Brady Volpe, Comcast, CableLabs, Cisco

Mia Colabrese2021-08-15T18:53:49-04:00March 18th, 2019|

Happy Friday Everyone. Today is March 15 and this is episode 46 of Get Your Tech On, our show on All Things DOCSIS. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us today is: John Downey, CMTS Technical Leader at Cisco. Larry Wolcott PNM Round Table with special guests Larry Wolcott (SCTE Member of the year) Leader at Comcast’s Next Generation Technology Group Jason Rupe Principal Architect, Wired, R&D of CableLabs. Today’s topic is a follow up on last year's popular PNM show and