Enhance your radio communication projects with this high-performance Power Amplifier DIY Kit, designed for use in SSB, AM linear power amplifiers, CW, FM, and basic signal amplification applications. This amplifier kit delivers exceptional gain exceeding 40dB, amplifying signals up to 10,000 times, making it an ideal choice for DIY enthusiasts seeking low noise and high cost-performance solutions. Key Features: · Wide Application Range: Perfectly suited for SSB, AM linear power amplifiers, CW, FM, and general signal amplification, providing versatile use across various radio frequency projects. · High Gain Performance: Offers an overall gain exceeding 40dB, capable of boosting input signals from 1-5mW to output power levels up to 45W, with a maximum output power of 57W without a heat sink. · Low Noise Operation: Designed to minimize noise, ensuring clear and reliable signal amplification for improved communication quality. · Easy Installation and Operation: Comes as a DIY kit with straightforward assembly, allowing hobbyists to customize and build their own power amplifier efficiently. · Adjustable Output Impedance: Features a 50-ohm output impedance, adjustable between 10-200 ohms to meet specific project requirements. · Standard SMA Interface: Equipped with standard SMA input/output connectors with external threaded holes for secure and reliable connections. · Lightweight and Compact: Weighing approximately 62g, this kit is easy to handle and integrate into your projects. Specifications: · Input Power: 1-5mW · Output Power: Up to 45W (maximum) · Maximum Output Power: 57W (without heat sink) · Input Voltage: DC 13.8V, 10A or higher · Output Impedance: 50 ohms (adjustable 10-200 ohms) · Frequency Input Range: 3MHz – 30MHz (HF band) · Input/Output Interface: Standard SMA with external threaded hole · Frequency vs. Output Power:  - 3.500MHz: 54W  - 7.050MHz: 56W  - 10.000MHz: 57W  - 14.270MHz: 55W  - 21.400MHz: 41W  - 24.000MHz: 37W  - 28.100MHz: 25W  - 29.600MHz: 20W · Weight: Approx. 62g Package Includes: · 1 x Power Amplifier DIY Kit (radiator not included, assembly required) This Power Amplifier DIY Kit is an excellent solution for radio amateurs and electronics enthusiasts seeking a powerful, low-noise amplifier with flexible installation options. Build your own reliable amplifier to boost your HF band signals with ease and confidence.