The `!Heltec WiFi LoRa 32 V3`!, more commonly known as the `!Heltec V3`!, is a development board based around the ESP32-S3 microcontroller and the SX1262 LoRa transceiver. It features a 45 mW increase in output power over its predecessor, the `F0af`_`[Heltec V2`:/page/wiki.mu`path=Heltec_V2]`_`f, along with the addition of a TCXO.

>>Contents

• `F0af`_`[Models`#models]`_`f

• `F0af`_`[Firmware`#firmware]`_`f

• `F0af`_`[References`#references]`_`f

• `F0af`_`[External links`#external-links]`_`f

>>Models

There are two models of the Heltec V3. The `*HF`* operates on frequencies between 863 and 928 MHz, while the `*LF`* operates on the lower-frequency 433 and 470 MHz band.

>>Firmware

The Heltec V3 is supported by the official `F0af`_`[RNode`:/page/wiki.mu`path=RNode]`_`f firmware as of version 1.71.`:cite-ref-1[`F5bf`_`[1`#cite-note-1]`_`f] It is also supported by the `F0af`_`[microReticulum`:/page/wiki.mu`path=MicroReticulum]`_`f firmware as of version 1.72.1.`:cite-ref-2[`F5bf`_`[2`#cite-note-2]`_`f]

>>References

`:cite-note-1`!1.`! `F0af`_`[↑`#cite-ref-1]`_`f "Release 1.71".

`:cite-note-2`!2.`! `F0af`_`[↑`#cite-ref-2]`_`f "Release 1.72.1".

>>External links

• Official website

• Datasheet

>>Heltec WiFi LoRa 32 V3

`!Also known as:`! Heltec V3

`!Manufacturer:`! Heltec Automation

`!Type:`! Development board

`!Price:`! US$17.90

`!MCU:`! ESP32-S3FN8

`!CPU:`! Xtensa LX7 @ 240 MHz

`!Memory:`! 512 kB SRAM 8 MB Flash

`!Display:`! 0.96-inch OLED 128 × 64 px

`!Power source:`! 5 V USB Type-C 3.7 V Li-ion Battery

`!Dimensions:`! 50.2 × 25.5 × 10.2 mm

`!Predecessor:`! `F0af`_`[Heltec WiFi LoRa 32 V2`:/page/wiki.mu`path=Heltec_WiFi_LoRa_32_V2]`_`f

`!Successor:`! `F0af`_`[Heltec WiFi LoRa 32 V4`:/page/wiki.mu`path=Heltec_WiFi_LoRa_32_V4]`_`f

>>>Bluetooth LE

`!Transceiver IC:`! ESP32-S3FN8

`!PHY modes:`! 2M, Coded

`!Output power:`! 20 dBm (100 mW)

`!Sensitivity:`! -98 dBm @ 1 Mbps

`!Antenna type:`! Shared Spring

>>>2.4 GHz Wi-Fi

`!Transceiver IC:`! ESP32-S3FN8

`!PHY modes:`! IEEE 802.11b/g/n

`!Output power:`! 21 dBm (125 mW)

`!Sensitivity:`! -98 dBm @ 1 Mbps

`!Antenna type:`! Shared Spring

>>>Sub-GHz LoRa

`!Transceiver IC:`! SX1262

`!PHY modes:`! FSK, LoRa, LR-FHSS

`!Frequency range:`! 433–510 MHz or 863–928 MHz

`!Output power:`! 21 dBm (125 mW)

`!Sensitivity:`! -137 dBm @ `F0af`_`[SF`:/page/wiki.mu`path=LoRa_parameters|anchor=spreading-factor]`_`f12 `F0af`_`[BW`:/page/wiki.mu`path=LoRa_parameters|anchor=bandwidth]`_`f 125 KHz

`!Antenna type:`! External u.FL