Amazon.com: QIACHIP WL101 Superheterodyne Receiver and WL102 Transmitter kit 433Mhz RF Wireless Module with Antenna for Arduino UNO DIY Kits : Electronics
10 sets SRX882 RX Module + STX882 TX Module + SW315 TH23Golden Spring Antenna +Pins Soldering 315MHz RF Transmitter and Receiver|rf transmitter and receiver|transmitter and receiverset 10 - AliExpress
1 Set Rf Module 433 Mhz Superheterodyne Receiver And Transmitter Kit With Antenna For Arduino Uno Diy Kits 433mhz Remote Control - Remote Control - AliExpress
figuring out where to plug in the antenna for 433 mhz transmitter receiver - Microcontrollers - Arduino Forum