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Add Channel Frequency Calculator
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Sacha Weatherstone
parent
8c1e6b1960
commit
ec4b42e3d5
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@ -6,6 +6,8 @@ sidebar_label: Radio Settings
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sidebar_position: 1
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---
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import {FrequencyCalculator} from "/src/components/tools/FrequencyCalculator";
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:::info
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Meshtastic is **not** LoRaWAN, Helium or TTN (TheThingsNetwork). Meshtastic uses the full spectrum frequency range designated to LoRa technology per region. This allows for several hundred possible frequency channels in the US region alone.
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:::
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@ -14,6 +16,10 @@ Meshtastic is **not** LoRaWAN, Helium or TTN (TheThingsNetwork). Meshtastic uses
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Power limits will generally be lifted in the software if `is_licensed` is set to `true`. See [HAM Mode](/docs/faq#amateur-radio-ham) for more information.
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:::
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## Channel Frequency Calculator
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<FrequencyCalculator />
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## Europe Frequency Bands
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### 433 MHz
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336
src/components/tools/FrequencyCalculator.tsx
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336
src/components/tools/FrequencyCalculator.tsx
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@ -0,0 +1,336 @@
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import React, { useEffect } from "react";
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import { Protobuf, Types } from "@meshtastic/meshtasticjs";
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interface Region {
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freq_start: number;
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freq_end: number;
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duty_cycle: number;
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spacing: number;
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power_limit: number;
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}
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interface Modem {
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bw: number;
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cr: number;
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sf: number;
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}
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const RegionData = new Map<Protobuf.Config_LoRaConfig_RegionCode, Region>([
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[
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Protobuf.Config_LoRaConfig_RegionCode.US,
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{
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freq_start: 902.0,
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freq_end: 928.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 30,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.EU_433,
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{
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freq_start: 433.0,
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freq_end: 434.0,
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duty_cycle: 10,
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spacing: 0,
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power_limit: 12,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.EU_868,
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{
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freq_start: 869.4,
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freq_end: 869.65,
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duty_cycle: 10,
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spacing: 0,
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power_limit: 27,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.CN,
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{
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freq_start: 470.0,
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freq_end: 510.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 19,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.JP,
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{
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freq_start: 920.8,
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freq_end: 927.8,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 16,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.ANZ,
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{
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freq_start: 915.0,
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freq_end: 928.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 30,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.RU,
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{
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freq_start: 868.7,
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freq_end: 869.2,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 20,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.KR,
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{
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freq_start: 920.0,
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freq_end: 923.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 0,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.TW,
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{
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freq_start: 920.0,
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freq_end: 925.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 0,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.IN,
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{
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freq_start: 865.0,
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freq_end: 867.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 30,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.NZ_865,
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{
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freq_start: 864.0,
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freq_end: 868.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 36,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.TH,
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{
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freq_start: 920.0,
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freq_end: 925.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 16,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.UA_433,
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{
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freq_start: 433.0,
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freq_end: 434.7,
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duty_cycle: 10,
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spacing: 0,
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power_limit: 10,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.UA_868,
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{
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freq_start: 868.0,
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freq_end: 868.6,
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duty_cycle: 1,
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spacing: 0,
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power_limit: 14,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.LORA_24,
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{
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freq_start: 2400.0,
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freq_end: 2483.5,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 10,
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},
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],
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[
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Protobuf.Config_LoRaConfig_RegionCode.UNSET,
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{
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freq_start: 902.0,
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freq_end: 928.0,
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duty_cycle: 100,
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spacing: 0,
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power_limit: 30,
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},
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],
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]);
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const modemPresets = new Map<Protobuf.Config_LoRaConfig_ModemPreset, Modem>([
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[
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Protobuf.Config_LoRaConfig_ModemPreset.SHORT_FAST,
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{
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bw: 250,
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cr: 8,
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sf: 7,
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},
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],
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[
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Protobuf.Config_LoRaConfig_ModemPreset.SHORT_SLOW,
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{
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bw: 250,
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cr: 8,
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sf: 8,
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},
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],
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[
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Protobuf.Config_LoRaConfig_ModemPreset.MEDIUM_FAST,
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{
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bw: 250,
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cr: 8,
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sf: 9,
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},
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],
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[
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Protobuf.Config_LoRaConfig_ModemPreset.MEDIUM_SLOW,
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{
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bw: 250,
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cr: 8,
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sf: 10,
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},
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],
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[
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Protobuf.Config_LoRaConfig_ModemPreset.LONG_FAST,
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{
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bw: 250,
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cr: 8,
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sf: 11,
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},
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],
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[
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Protobuf.Config_LoRaConfig_ModemPreset.LONG_MODERATE,
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{
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bw: 125,
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cr: 8,
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sf: 11,
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},
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],
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[
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Protobuf.Config_LoRaConfig_ModemPreset.LONG_SLOW,
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{
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bw: 125,
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cr: 8,
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sf: 12,
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},
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],
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[
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Protobuf.Config_LoRaConfig_ModemPreset.VERY_LONG_SLOW,
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{
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bw: 62.5,
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cr: 8,
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sf: 12,
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},
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],
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]);
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export const FrequencyCalculator = (): JSX.Element => {
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const [modemPreset, setModemPreset] =
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React.useState<Protobuf.Config_LoRaConfig_ModemPreset>(
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Protobuf.Config_LoRaConfig_ModemPreset.LONG_FAST,
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);
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const [region, setRegion] =
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React.useState<Protobuf.Config_LoRaConfig_RegionCode>(
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Protobuf.Config_LoRaConfig_RegionCode.US,
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);
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const [channel, setChannel] = React.useState<Types.ChannelNumber>(
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Types.ChannelNumber.PRIMARY,
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);
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const [numChannels, setNumChannels] = React.useState<number>(0);
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const [channelFrequency, setChannelFrequency] = React.useState<number>(0);
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useEffect(() => {
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const selectedRegion = RegionData.get(region);
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const selectedModemPreset = modemPresets.get(modemPreset);
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setNumChannels(
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Math.floor(
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(selectedRegion.freq_end - selectedRegion.freq_start) /
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(selectedRegion.spacing + selectedModemPreset.bw / 1000),
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),
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);
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setChannelFrequency(
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selectedRegion.freq_start +
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selectedModemPreset.bw / 2000 +
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channel * (selectedModemPreset.bw / 1000),
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);
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}, [modemPreset, region, channel]);
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return (
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<div className="flex flex-col border-l-[5px] shadow-md my-4 border-accent rounded-lg p-4 bg-secondary gap-2">
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<div className="flex gap-2">
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<label>Modem Preset:</label>
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<select
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value={modemPreset}
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onChange={(e) =>
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setModemPreset(
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parseInt(
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e.target.value,
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) as Protobuf.Config_LoRaConfig_ModemPreset,
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)
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}
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>
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{Array.from(modemPresets.keys()).map((key) => (
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<option key={key} value={key}>
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{Protobuf.Config_LoRaConfig_ModemPreset[key]}
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</option>
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))}
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</select>
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</div>
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<div className="flex gap-2">
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<label>Region:</label>
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<select
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value={region}
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onChange={(e) => setRegion(parseInt(e.target.value))}
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>
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{Array.from(RegionData.keys()).map((key) => (
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<option key={key} value={key}>
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{Protobuf.Config_LoRaConfig_RegionCode[key]}
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</option>
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))}
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</select>
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</div>
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<div className="flex gap-2">
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<label>Channel:</label>
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<select
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value={channel}
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onChange={(e) => setChannel(parseInt(e.target.value))}
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>
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{Array.from(Array(numChannels).keys()).map((key) => (
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<option key={key} value={key}>
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{key}
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</option>
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))}
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</select>
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</div>
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<div className="flex gap-2">
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<label className="font-semibold">Number of channels:</label>
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<input type="number" disabled value={numChannels} />
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</div>
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<div className="flex gap-2">
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<label className="font-semibold">Channel Frequency:</label>
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<input type="number" disabled value={channelFrequency} />
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</div>
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</div>
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);
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};
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