# Transmission Published articles for Transmission. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Multi-Core Fiber: Several Optical Cores Inside One Strand DevFeed: [Multi-Core Fiber: Several Optical Cores Inside One Strand]() Original publisher: [Read original article]() Author: j2sw Published: 2026-08-18T13:39:00Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [Hardware](), [Networks](), [interface]() Tags: [400g](), [cabling](), [channel](), [connectors](), [data-center](), [fiber](), [fiber-optics](), [internet-architecture](), [multi-core-fiber](), [network-engineering-resources](), [networks](), [optical-networking](), [optics](), [space-division-multiplexing](), [transmission]() ### AI overview This article explains how multi-core fiber places several optical cores inside one standard 125-micron cladding. It distinguishes MCF from high-fiber-count cable, describes aggregate capacity using separate channels and space-division multiplexing, and explains the need for specialized optical interfaces, connectors, splicing, and testing. ### Source excerpt Multi-core fiber places several independent optical cores inside one standard 125-micron cladding. It increases channel density, but it also requires different connectors, splicing methods, and testing procedures. The post Multi-Core Fiber: Several Optical Cores Inside One Strand appeared first on Justin Wilson (j2sw). ## Troubleshooting Tarana Wireless Customer Connections DevFeed: [Troubleshooting Tarana Wireless Customer Connections]() Original publisher: [Read original article]() Author: j2sw Published: 2026-08-04T18:18:31Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [Network]() Tags: [access-point](), [isp](), [latency](), [network-operations](), [network-troubleshooting](), [rf](), [rf-troubleshooting](), [signal](), [tarana](), [transmission](), [troubleshooting](), [wireless](), [wireless-networking](), [wisp]() ### AI overview This troubleshooting guide explains why a single metric cannot establish the health of a Tarana wireless customer connection. It recommends evaluating RSSI, SNR, modulation rate, retransmissions, latency, sector utilization, and trends together to identify signal limitations, interference, changing RF conditions, and their effects on throughput. ### Source excerpt Troubleshooting Tarana wireless customer connections means looking at RSSI, SNR, modulation, retransmissions, latency, sector utilization, and trends together. The post Troubleshooting Tarana Wireless Customer Connections appeared first on Justin Wilson (j2sw). ## Transmission: Permission Denied to Downloads directory DevFeed: [Transmission: Permission Denied to Downloads directory]() Original publisher: [Read original article]() Author: Tom Published: 2025-12-26T00:00:00Z Content type: tutorial Language: en Sources: [Tomasz Gągor]() Topics: [Ubuntu](), [configuration](), [bug]() Tags: [apparmor](), [complain-mode](), [configuration](), [downloads-directory](), [how-to](), [localized-folders](), [permission](), [permissions](), [security](), [syslog](), [transmission](), [ubuntu](), [xdg-user-dirs]() ### AI overview A Transmission AppArmor profile on Ubuntu may deny access to localized Downloads directories because it expects English directory names. The article explains how to update the profile with localized paths and restart AppArmor to restore downloads. ### Source excerpt Transmission on Ubuntu may be denied access to localized Downloads directories due to AppArmor profiles expecting English folder names. Here's how to fix it. ## Dutch Electrical Power Numbers part 2 DevFeed: [Dutch Electrical Power Numbers part 2]() Original publisher: [Read original article]() Published: 2022-04-14T19:44:21Z Content type: opinion Language: en Sources: [Bert Hubert's writings]() Topics: [data](), [Network]() Tags: [data](), [energy](), [network](), [solar](), [statement](), [transmission](), [transparency](), [tso]() ### AI overview The article examines inconsistencies and gaps in Dutch electrical power-generation data reported by TenneT to the ENTSO-E transparency platform. It discusses potentially incomplete or unclear figures for solar, onshore wind, fossil gas, and the "Other" category, while noting TenneT's explanation that unidentified or unavailable generation may be grouped or omitted. ### Source excerpt In an earlier post I presented a naive model for estimating Dutch electrical solar power generation numbers. It turns out that the Dutch electrical power generation numbers are an even bigger mess than I appreciated. It appears that "everyone knows" that the numbers are confusing, incomplete and perhaps even wrong. But somehow this state of confusion isn't written down anywhere. So I'll give it a shot. A round of thanks to a small number of anonymous industry insiders that provided invaluable help! ## Hamming's Code DevFeed: [Hamming's Code]() Original publisher: [Read original article]() Published: 2015-03-02T09:00:00Z Content type: tutorial Language: en Sources: [Jeremy Kun]() Topics: [Code](), [Encoding](), [digital]() Tags: [coding-theory](), [compression](), [computing](), [encoding](), [error](), [errors](), [finite-fields](), [hamming](), [hamming-code](), [hypercube](), [information-theory](), [linear-algebra](), [linear-codes](), [np-hard](), [reed-solomon-codes](), [solved](), [transmission]() ### AI overview This tutorial introduces Hamming codes as efficiently computable encoding schemes for detecting and correcting errors caused by noise during digital transmission. It defines a code as a subset of binary strings and relates codewords to an injective encoding function. ### Source excerpt Or how to detect and correct errors Last time we made a quick tour through the main theorems of Claude Shannon, which essentially solved the following two problems about communicating over a digital channel. What is the best encoding for information when you are guaranteed that your communication channel is error free? Are there any encoding schemes that can recover from random noise introduced during transmission? The answers to these questions were purely mathematical theorems, of course.