Catalog
Every field note, in one index
Nine technical notes plus the project pages. Dates are publication and last revision. Nothing here is a product listing.
12 Mar 2025
Rev. 18 Jun 2026
How a mobile session travels
The hop-by-hop path from a modem to a content cache.
Radio path
3 Apr 2025
Rev. 22 May 2026
Spectrum and frequency bands in Chile
What mid-band, coverage-band, and capacity-band actually change.
Spectrum
19 May 2025
Rev. 9 Jul 2026
Reading 4G and 5G coverage
Generation labels, indoor loss, and map legends.
Coverage
28 Jun 2025
Rev. 14 Aug 2026
Where mobile internet speed comes from
A checklist of ceilings that sit under a speed-test number.
Performance
7 Aug 2025
Rev. 30 Jul 2026
Fiber backhaul and the cell
Why a modern radio can still feel slow if the exit is thin.
Transport
21 Sep 2025
Rev. 28 Jul 2026
Cell sites and radio infrastructure
Sectors, rooftops, power, and what you are looking at from the street.
Infrastructure
4 Nov 2025
Rev. 2 Jun 2026
Rural and urban connectivity
Distance, terrain, and why density changes everything.
Geography
16 Jan 2026
Rev. 21 Aug 2026
Submarine cables and Chile's capacity
How the Pacific landing affects latency more than a bar of signal.
International
27 Feb 2026
Rev. 3 Aug 2026
Reading signal metrics on a phone
RSRP, RSRQ, SINR, and a cautious way to interpret them.
Practice
Project pages
Three reading paths through the same nine notes
The catalog is an index, not a shop. If you arrived with one question, these orders keep you from bouncing between a map and a cable without a hop in between.
What the catalog is not
It is not a product grid. There are no SKUs, no “add to cart,” and no plan comparison. Dates exist so you can see when a mechanism was last revised. Topics exist so you can jump to spectrum or geography without reading the whole atlas in order.
If you need the publisher rather than a note, use about or contact. If you need the limits of the text, use the disclaimer.
How the nine notes sit together
The atlas is one chain written as separate doors. Radio and bands explain the air. Coverage and geography explain the map. Sites and backhaul explain the plant. Cables explain the ocean. Metrics and speed explain how to write a sample without turning it into a ranking.