In Nepal, Meshtastic uses the NP_865 region: 865.0–868.0 MHz, with no duty-cycle limit (100%) and a maximum of 30 dBm. With the default LONG_FAST preset and the default channel, every node transmits and listens on 867.875 MHz.
| Property | Value |
|---|---|
| Region code | NP_865 |
| Frequency range | 865.0 – 868.0 MHz |
| Duty cycle | 100% (no airtime limit) |
| Maximum power | 30 dBm (the board’s own maximum is lower: the SX1262 tops out around 22 dBm) |
| Default preset | LONG_FAST (250 kHz bandwidth, spreading factor 11) |
| Channel slots with LONG_FAST | 12 × 250 kHz |
| Default LongFast frequency | 867.875 MHz (slot 11) |
Sources: Meshtastic’s LoRa configuration and region by country pages, and the region table in the firmware source. That table cites the Nepal Telecommunications Authority’s Radio Frequency Policy 2080 (2023). Its Schedule 4 sets aside 865–868 MHz for non-cellular IoT on a shared, non-exclusive basis with no frequency fee.
Meshtastic splits the region into slots as wide as the preset’s bandwidth. It then hashes the channel name (for the default channel, the preset’s name, LongFast) to pick a slot, unless you set lora.channel_num or lora.override_frequency yourself:
slots = (868.0 − 865.0) MHz / 0.250 MHz = 12
slot = djb2("LongFast") mod 12 = 11
frequency = 865.0 + 0.125 + 11 × 0.250 = 867.875 MHz
When a Heltec boots, you can see this in its serial log: Radio freq=867.875 … region=NP_865, name=LongFast … ch=11. If two of your boards show different frequencies, they will never hear each other. tools/radio_check.py prints the computed frequency for each board.
India’s IN region is 865–867 MHz, which overlaps but is not identical. A different region gives a different slot layout, so set every node in Nepal to NP_865.
Meshtastic’s NP_865 settings were made to follow the NTA policy above. Regulations change and depend on your use, so check with the Nepal Telecommunications Authority for anything beyond hobby and educational experiments. This page is not legal advice.
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