Link-LR
LoRa traffic analyzer and generator
Test your LoRa link in real conditions
Link-LR captures what goes through a LoRa channel and puts frames on air, to develop, test and validate LoRa equipment and networks (P2P, Meshtastic, LoRaWAN), from the bench to range tests in the field.
It runs on its own, on battery with its touch screen, or connected to a PC, where Link Studio drives it, reads its recordings and decodes them.
Measure, transmit, record
Stats - The current session in figures, frames sorted by margin.
Frame detail - The measurements taken on the frame, and its data.
Log - Every reception as a row: time, interval, length, RSSI, and the SNR colored by link margin. Errors get their own row too: CRC, header, incomplete frame.
Transmit - Frames sent from the device: any payload, or a received frame replayed.
Recording - Always on: everything received and sent is kept.
Specifications
Frequencies: 868 MHz (EU) / 915 MHz (US)
Antenna: External SMA
Display: 2.8" capacitive touch / 320 × 240 px
Battery: 18650 Li-ion, 2250 mAh, replaceable
USB: USB-C, charging and data
Enclosure: 100 x 90 x 30 mm (without antenna)
Radio: SX1262 (Seeed Wio-SX1262 module), LoRa
Recording: Permanent (flash), 4 MB rotating
Settings: SF 5 to 12, bandwidth 62.5 to 500 kHz, coding rate 4/5 to 4/8, sync word, preamble, CRC, IQ, receiver gain
Transmit: −9 to +22 dBm, up to 255 bytes
Open source
Firmware
ESP-IDF, C
The firmware, hardware, app and protocol are published as open source.
Hardware
App
Protocol
KiCad schematics, enclosure
Link Studio
JSON commands, recording format
link
Availability
Link-LR
€249 excl. VAT
SMA antenna
Desktop app (Windows, Linux, macOS)
What's included
Link-LR
First batch in preparation. Sign up to hear when reservations open.
FAQ
Does it work with LoRaWAN or Meshtastic?
Link-LR works at the LoRa radio layer: it receives and sends frames with the settings you choose, whatever the network above. It is not a LoRaWAN gateway and does not join a network.
Which bands?
862 to 930 MHz: EU868 and US915. No 433 or 169 MHz: the radio path is built for 868/915.
