Mode LoRa APRS

LoRa APRS: APRS stations over LoRa on 433 MHz.

Group	Amateur: voice & packet
Default frequency	433.775 MHz
Default sample rate	2 Msps
In the mode list	LoRa, 433.775 MHz

Step-by-step: Tutorial-LoRa-APRS

What LoRa APRS is

LoRa APRS carries APRS positions over LoRa on 433.775 MHz in Europe.

Frequencies and settings

Setting	Value
Start frequency	433.775 MHz
Tuning range of the mode table	400 to 2500 MHz
Sample rate asked	2 Msps
Lowest working rate	1 Msps
Channel width	250 kHz

OnAir takes any frequency you type; the numbers above are the mode's starting point and the range its table describes. In the app the shortcut label is LoRa, 433.775 MHz.

What OnAir shows

LoRa APRS on 70 cm, 433.775 MHz in Europe (SF12, 125 kHz).

The mode's own tab has these screens: Stations, Map, Packets, Settings. The other tabs (Overview, Receiver, Scan, History) are described on the Main window page.

Tips and caveats

• Checked with generated signals and impairments; recordings of real signals welcome.
• Which radio: Usually yes for narrowband signals: an RTL-SDR tunes roughly 24 MHz to 1.7 GHz at up to about 2.4 Msps. Wide signals such as TV channels need a faster radio, and OnAir says next to the source what the selected radio can do.
• Try it without a radio: most modes include a built-in synthetic test signal, so you can open the screen and try the controls first.
• Receiving and the law: Amateur radio signals are meant to be received. Receiving needs no licence in most countries; OnAir does not transmit. Voice needs a codec library you install yourself. See Legal.

Related pages

• Voice codecs
• All modes, Amateur: voice & packet
• Supported radios, Troubleshooting, FAQ
• More in Amateur: voice & packet: FreeDV, M17, D-STAR, APRS (AFSK), MeshCom