MESHTASTIC · TROPOSPHERIC DUCT · 1-2 NOV 2026
354 km in a single LoRa hop
On the night of 1 to 2 November 2026 a tropospheric duct over the sea linked two independent Meshtastic networks in Argentina: ComarcaMesh (Viedma and Carmen de Patagones) and SOMesh (Bahía Blanca and region). The longest hop, 354.3 km between two routers on towers, was recorded in both directions. MediumFast preset, 915 MHz.
What happened
- PAT1, a SenseCAP Solar P1 router installed the day before on a tower in Carmen de Patagones, heard the Bahía Blanca region from 20:36 local time (UTC−3): two openings, 20:36-23:43 and 00:33-04:30, 7 h 04 min in total.
- 656 packets from 70 nodes of the region reached the Viedma station, all relayed by PAT1. Traceroutes show 4 direct hops between the networks: 354.3 km to C-3A (Tres Arroyos), 272.6 km to Coronel Dorrego, 247.2 km to Monte Hermoso and 242.5 km to Bahía Blanca.
- A traceroute from Viedma to ElArroyoMesh, 416 km away near Carhué, came back with 5 relays each way.
- People in both cities talked on the public channel. Weather models show a duct along the coast during those hours.
Reports and data
- ENTechnical reportwebEvery traceroute, the propagation analysis and how to check the data.
- ENTechnical report (PDF)2.4 MBThe same report, for A4.
- ENBulletin: Tropo DX Patagones-Tres Arroyos1.1 MBThe short version, ham style.
- ENData11.5 MBNodes, packets, receptions, traceroutes, raw public-channel packets, weather sources and a script that recomputes the numbers.
- ESInforme técnicowebEl informe completo en castellano.
- ESBoletín: Tropo DX Patagones-Tres Arroyos1.1 MBLa versión corta, para difundir.
En castellano
La noche del 1 al 2 de noviembre de 2026, un conducto troposférico sobre el mar enlazó por radio la red Meshtastic de Viedma y Carmen de Patagones (ComarcaMesh) con la de Bahía Blanca y su región (SOMesh). El salto más largo unió PAT1, en una torre de Patagones, con C-3A, en una torre de 90 m en Tres Arroyos: 354,3 km, registrado en los dos sentidos. Hubo dos aperturas, de 20:36 a 23:43 y de 00:33 a 04:30, y llegaron a Viedma 656 paquetes de 70 nodos de la región.