Turn your Arduino into an AM radio transmitter! - Exhibition / Gallery - Arduino Forum
Oiyagai 3pcs 315MHz RF Wireless Transmitter and Receiver Module Kit for Arduino/Arm/McU/Raspberry pi: Amazon.com: Industrial & Scientific
RF Transmitter Receiver Module Smart Electronics 433Mhz Link Kit For Arduino | eBay
Long Range 433mhz Rf Wireless Transceiver Kit With Antenna Large Power 433 Mhz Transmitter Receiver Module Lora Kit For Arduino - Industrial Computer & Accessories - AliExpress
Arduino Radio Communication (nRF24L01) - Arduino Project Hub
TUTORIAL: How to set up wireless RF (433Mhz) Transmitter Receiver Module - Arduino Quick Simple - YouTube
Amazon.com: QIACHIP WL101 Superheterodyne Receiver and WL102 Transmitter kit 433Mhz RF Wireless Module with Antenna for Arduino UNO DIY Kits : Electronics
Arduino and RF Transmitter Receiver Module
Ab)use an Arduino as AM Music Transmitter! - Arduino Project Hub