https://reticulum.network/hardware.HTML

Can easily use a LilyGo LoRa32 V2.1 board (same as what you can use with meshtastic), just flash reticulum firmware on there.

Here's also a simple build guide for an RNodefrom awhile ago👇

https://unsigned.io/guides/2023_01_14_Making_A_Handheld_RNode.html

Reticulum boards work best, if thinking the same setup as meshtastic, if you use any board that has;

- ESP32 chip

- SX1262 chip for transceiver

So, boards like the LilyGo T-Echo Meshtastic LoRa SX1262, 915MHz devices work well

- their T-Decks & T-beams would suffice too