1. Versatile Band Switching: This portable shortwave power amplifier supports 4 manual or external control line band switching options for easy frequency adjustments. 2. Automatic TX RX Switching: Built in circuitry enables seamless transmission and reception switching without the need for a dedicated PTT line. 3. Temperature Safety and Intelligent Cooling: Aluminum alloy casing with powerful fan ensures efficient heat dissipation and automatic cooling at set temperature thresholds for the power amplifier. 4. Compatibility with for ICOM and for Band Switching Protocols: Portable power amplifier features seamlessly switch between for ICOM and for bands with a frequency range of 2MHz‑30MHz. 5. High Transmission Power Range: Transmit up to 6W of power, making it ideal for a wide range of portable shortwave amplification needs. Item Type: Portable Power Amplifier Frequency Range: 2MHz-30MHz Input Power: 3-6W Input VSWR: ≤2.0 at 50Ω Output Power: 80-120W at 13.8V Output Impedance: 50Ω Supply Voltage: 12-15V; 13.8V (typical) Current Consumption: ≤18A Operating Temperature: ≤65℃ Colour:Black Material:Aluminum Alloy Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Shortwave Amplifier 2 * Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.