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MB7UBA - LoRA APRS Digi/iGate
MB7UBA runs APRS over LoRA.
Frequency: 439.9125 MHz
Bandwidth 125 khz
Spreading Factor (SF): 12
Coding Rate (CR4): 4/5 (ie. enter “5” for the CR4 coding rate)
This is the same frequency and parameters for LoRa based APRS across the UK.
For those that don't know, APRS over LoRA is exactly what it sounds like: Automatic Packet Reporting System (APRS) packets sent using using LoRa radio modulation, instead of the more common FM modulation used in standard APRS.
A LoRa-only APRS map can be found at https://lora.ham-radio-op.net/, though packets from LoRa based devices are still found on common APRS sites like aprs.fi.
The digi runs on a Lilygo T-Beam v1.2 with an SX1262, and uses the firmware from https://github.com/richonguzman/LoRa_APRS_iGate. Tracker firmware for similar boards can be found at https://github.com/richonguzman/LoRa_APRS_Tracker.
There are plans to create some interaction with the packet node GB7BSK which is located at the same site, so you can interact with one from the other (within some limits, no large transfers over LoRa which would swamp the frequency!)