The Kalmus KAA4020 is a broadband RF power amplifier delivering 25 W into a 50 Ω load across the 10 kHz to 230 MHz frequency range. Designed for laboratory applications, communications work, and RF immunity testing, it operates without tuning, band switching, or manual adjustments. The amplifier achieves a minimum power gain of 43 dB and accepts drive levels from standard signal generators.
## Technical Specifications
• **Frequency Range:** 10 kHz to 230 MHz
• **Rated Output Power:** 25 W into 50 Ω load
• **Power Gain:** Minimum 43 dB
• **Input Impedance:** 50 Ω nominal
• **Output Impedance:** 50 Ω nominal
• **Class of Operation:** Linear Class A
• **Input Power for Full Output:** 1 mW
## Key Features
• Zero-adjustment operation—no tuning or band switching required
• Automatic thermal protection with gate bias interruption at overtemperature
• Automatic recovery when temperature normalizes
• N-type female connectors
• Forced-air cooling
• AC power indicator and temperature indicator
• Primary power: 100–240 VAC, 50/60 Hz
## Typical Applications
• General-purpose RF amplification in laboratory settings
• Communications systems requiring linear amplification
• RF immunity and susceptibility testing
• Signal conditioning for test and measurement
## Compatibility & Integration
The KAA4020 integrates directly with standard RF signal generators and test equipment operating at industry-standard 50 Ω impedance. Its broad frequency range and fixed-gain architecture eliminate the need for reconfiguration across multiple applications.
