SoftRF [](https://old.mipt.ru/drec/events/radioDay)

June 22, 2026 · View on GitHub

Release Release Date      Join the chat at https://gitter.im/lyusupov/SoftRF Build Status

DIY, multi-functional, compatible, sub-1 GHz ISM band radio based proximity awareness system for general aviation.

Features


Compatibility 1

TypeProtocolFLARMOGN trackerPilotAwareSkytraxxSoftRF
RadioFLARM AIR V7

2

 

OGNTP

3

 

P3I

3

 

FANET+

3

 

978 UAT
ADS-B

4

 

1090 ES
ADS-B

5

5

 

SRD 860
ADS-L

 

APRS

6

 

Remote ID

DataFLARM NMEA

 Garmin GDL90

 

MAVLINK

 

Dump1090  7

1 - it is necessary for a reader to distinguish the difference between statement "compatible" and statement "fully compatible".
     SoftRF implements only a reasonable minimum of the protocols specs. No "bells and whistles" so far.
2 - FANET+ can not receive FLARM. However it is able to transmit it.
3 - valid for Prime Mark III , Prime Mark II , Dongle , Mini , Badge , Bracelet , Academy , Octave , Lego , Balkan , Midi , Eco , Card , Cozy , Handheld , Gizmo , Nano , Airventure , Solaris , Pocket , Labubu and Concorde Editions ; valid for Standalone , UAV and Uni Editions with optional DIY SoftRF LoRa RF module
4 - Reception of traffic 'downlink' frames only. Valid for Uni Edition alone and for Standalone Edition with optional DIY SoftRF UAT module
5 - Reception of traffic 'downlink' frames only. Valid for ES Edition
6 - APRS is the only available with Ham Edition
7 - also known as "raw ADS-B"

Models

By Processing Unit

Model(s)PlatformFirst appearance       Status       Notes
1 Prime
2 Standalone
3 UAV
4 WebTop Serial		Espressif
ESP8266		Q4 2015Prime model is no longer supported - use Prime MkII instead.
1 Prime Mark II
2 Standalone + adapter
3 UAV
4 SkyView EZ
5 Flight Recorder		Espressif
ESP32		Q1 20181 today's best platform ;
2 holds FCC mark
1 Raspberry Edition
2 SkyView Pi		Broadcom
BCM283X
(Raspberry Pi)		Q4 2018Good for use together with RTL-SDR dongles to achieve additional 1090ES (and 978UAT) ADS-B air traffic reception.
UAT moduleTexas Instruments
CC1310		Q1 2019Unique RF radio specs are useful for UAT978 ADS-B reception [ 1 , 2 , 3 ]
1 Retro
2 Dongle
3 Bracelet
4 Retro Mark II 		STMicroelectronics
STM32F103 and
STM32L073		Q3 2019
UniTexas Instruments
CC13x2R		Q2 20201 Unique RF radio specs are useful for UAT978 ADS-B reception ;
2 holds FCC/CE mark
MiniCypress
PSoC 4100S		Q3 20201 good add-on candidate for modded Kobo e-Readers ;
2 holds FCC/CE mark
1 Badge
2 Card 
3 Cozy
4 Handheld 
5 Solaris 
6 Pocket 		Nordic Semiconductor
nRF52840		Q4 2020 holds FCC/CE mark
ESNXP Semiconductors
LPC4320		Q2 2021Unique RF radio specs are useful for 1090ES ADS-B reception [ 1 , 2 ]
1 Academy
2 USB2BT		Microchip (Atmel)
SAM D21 		Q4 2021 good for teaching students of air traffic proximity awareness
OctaveASR Microelectronics
ASR6601		Q1 2022the best 'price per radio protocol' ratio on the market
1 Lego
2 SkyView Pico		Raspberry Pi
Foundation
RP2040		Q1 2022 holds FCC/CE mark
BalkanSTMicroelectronics
STM32WLE5		Q3 2022 holds CE mark
WebTop USBEspressif
ESP32-S2		Q4 2022
1 Standalone upgrade
2 Nano 		Espressif
ESP32-C3		Q1 2023RISC-V
1 Prime Mark III
2 SkyView Pico
3 Ham
4 Midi
5 Gizmo 
6 Airventure 		Espressif
ESP32-S3		Q1 2023
1 Standalone upgrade
2 Eco
3 Duo		Espressif
ESP32-C6		Q1 20242 RISC-V cores
big.LITTLE
Academy  upgradeRenesas
RA4M1		Q1 2024
AcademySilicon Labs
EFx32		Q3 2024
AcademyNanjing Qinheng Microelectronics
CH32V307		Q3 2024RISC-V
IMAFC
1 Standalone upgrade
2 SkyView Pico 		Raspberry Pi
Foundation
RP2350		Q1 2025
1 Standalone upgrade
2 Lyra 		Rockchip
RK3506		Q3 2025
Concorde Espressif
ESP32-P4		Q3 2025
AcademyEspressif
ESP32-C5		Q3 2025
LabubuSTMicroelectronics
STM32WL55		Q4 2025
AcademyNordic Semiconductor
nRF54L15		Q1 2026

By sub-1 GHz radio

RadioModel(s)First appearance       Status       Notes
Nordic Semiconductor
nRF905		1 Prime
2 Standalone
3 UAV		Q4 2015 
Semtech
SX1276		1 LoRa module
2 Prime Mark II
3 Raspberry Edition
4 Dongle
5 Academy		Q4 2017 
Texas Instruments
CC1310		UAT moduleQ1 2019 
Semtech
SX1231		RetroQ3 2019operates through OGN driver with OGNTP protocol only
Semtech
SX1262		1 Prime Mark II
2 Mini
3 Badge
4 Lego
5 Balkan
6 Prime Mark III
7 Midi
8 Cozy
9 Handheld 
10 Gizmo 
11 Airventure 
12 Lyra 
13 Solaris 
14 Concorde 		Q1 2020 
Texas Instruments
CC13x2R		Uni EditionQ2 2020 
Maxim Integrated
MAX2837 and
MAX5864		ES EditionQ2 2021Software
Defined
Radio
NiceRF
SA868		Ham EditionQ3 2023VHF or UHF "Ham Radio" bands
Semtech
LR1110		1 Card 
2 Pocket 		Q3 2024 
Semtech
LR1121 		1 Standalone
2 Prime Mark III
3 Nano 		Q4 20242.1 GHz S-band
2.4 GHz ISM
Semtech SX1231
TI CC1101
Silicon Labs Si4432
Silicon Labs Si4463		StandaloneQ1 2025 
Semtech
LR2021 		1 Standalone
2 Retro Mark II 		Q1 2026the radio can receive ADS-B @ 1090 MHz 

By GNSS chip

GNSSModel(s)First appearance       Status       Notes
Generic
NMEA		StandaloneQ4 2016 
U-blox
6/7/8/9/10		1 Prime Mark II
2 Retro
3 Uni
4 Lego
5 Balkan
6 Prime Mark III		Q2 2018 
Hangzhou ZhongKe
AT6558		1 Prime Mark II
2 Mini
3 Badge
4 Prime Mark III
5 Ham
6 Cozy
7 Handheld 
8 Airventure 
9 Lyra 
10 Solaris 
11 Pocket 
12 Concorde 		Q2 2019 
Sony
CXD5603GF		1 DongleQ4 2019 
MediaTek
MT3339		1 Raspberry
2 Uni
3 Academy
4 Lego		Q3 2020 
GOKE
GK9501		MiniQ3 2020 
UniCore
UC6580		MidiQ3 2023 
Airoha
AG3335		Card Q3 2024 

By OEM

OEMModel(s)
LilyGO / TTGO1 Prime Mark II
2 Prime Mark III
3 Dongle
4 SkyView EZ
5 Bracelet
6 Badge
7 WebTop USB
8 Ham
9 Eco
10 Labubu
11 Concorde
Elecrow1 Handheld
2 Gizmo
3 Airventure
4 Solaris
5 Pocket
Heltec Automation1 Mini
2 Midi
3 Cozy
Waveshare Electronics1 SkyView Pi
2 SkyView Pico
Seeed Studio1 USB to Bluetooth
2 Card
Texas InstrumentsUni
Great Scott GadgetsES
Rak WirelessLego
OlimexBalkan
RadioMaster RCNano
EbyteRetro Mark II

Documentation

Highlights