R'F-IN port, R'F-Out port to connect external antenna (antenna not included). Dual-color LED Indicator: Green shows standby status; Red shows transmitting status. Item Name: R'F Power Amplifier.
Modulation Mode: DMR, C4FM, DPMR, CW, FSK, P2S, FM. Working Mode: Half Duplex (Cannot receive and transmit at the same time). Cooling Way: Cooling fan works when the temperature is more than 40? Size: 130 x 104 x 60mm (LWH). 1 x R'F Power Amplifier.