If you are JR hobby guy and want to update your JR replaceable RF Module FM Transmitter to the newest high-tech 2.4GHz system,CJ9 is your correct choice.

Compatible with JR radios include:
347,388,783,U8,PCM10,PCM10S,PCM10SX,PCM10IIs,8103,9303,MX-22,MX-24s
Size: 60 X 44 X 22mm (2.36 X 1.73 X 0.87 inch)
Antenna: 2dBi

When you are planning to update your radio into 2.4 G technology, our Corona CJ9 is your best choice .CJ9 is compatible with radios including:
347,388,783,U8,PCM10,PCM10S,PCM10SX,PCM10IIs,JR8103,JR9303,MX-22,MX-24s
Specification For Transmitter Module
Operating Voltage Range : 6.0V-13.0V
Operating Current : 100Ma
Output Power---- 10mW-60mW
Resolution : 10bit
Specification for Receiver
SRS81---- Fast Spread 2.4G Receiver work with Corona RF.Module
Operating Voltage Range --- 4.8V-6V
Operating Current --- 30Ma
Specified Range --- 1.5km
Resolutiong ---10 bit
Latency ---- 22ms
Sensitivity -- -100dbm
Channel --- 2CH , 3ch,4CH, 6CH, 8CH

we also sell the 2.4 g separate receivers as many customers need more 2.4 g receivers .Our 2.4 g receiver can work with both Corona 2.4 G Futaba mdoule and Corona 2.4 G JR mdoule