DB Broadcast KFG 100 – Compact Amplifier 2RU
0‐120 W output, with 0‐5 W input. Single 19″x 2U cabinet.
FM Amplifier KFG Series Overview
FM amplifiers KFG series are designed to operate across the full 87.5 – 108 MHz frequency range for FM radio broadcasting, with power ranging from 100W to 40kW.
Main Characteristics
- GREEN RF™ technology: High RF efficiency (>70%), higher safety and reliability, lower heating, and lower AC power consumption.
- Hot-Plug Solution (optional): Available for amplifiers over 5kW, allowing full-power on-air maintenance without interruption.
- Uninterrupted service: Intelligent protection system reduces power without interrupting transmission in case of load mismatching, over-temperature, or module failure.
High Efficiency Cooling System
The air-cooling system limits the heat-sink temperature rise to only about 10°C above ambient, ensuring reliable performance even in extreme climates.
Liquid Cooling
Our oversized liquid cooling system provides efficient temperature management, reducing the need for air conditioning and ensuring quiet, low-heat operation.
Advantages of Liquid Cooling
- Efficient in hard climate conditions
- Reduced air conditioning needs
- Longer lifespan for transistors and active elements
- Low acoustic noise
AAD Technology
Prevents corrosion from moisture and increases reliability by using anticorodal aluminum components and tropicalized circuit boards.
Model Specifications
| MODEL | OUTPUT POWER | OUTPUT CONNECTOR | RACK UNIT | RACK SUPPLIED |
|---|---|---|---|---|
| KFG 100 | 100 W | N | 19″ x 2U | No rack |
| KFG 300 | 300 W | N | 19″ x 2U | No rack |
| KFG 500 | 500 W | N | 19″ x 2U | No rack |
General Information
- Frequency range: 87.5 to 108 MHz adjustable with 10kHz step
- Output impedance: 50 Ω
- Spurious and harmonic suppression: Exceeds CCIR/FCC requirements
- Power stability: < 2% (ALC)
- DC to RF efficiency: 83% typ.
AC Power Requirements
- AC supply voltage: 115 / 230 VAC ± 15%, single-phase or 230/380 VAC ± 15%, three-phase
- AC supply frequency: 50 Hz or 60 Hz, ±5%
- Power factor: > 0.9
Environment
- Cooling: Forced air with built-in axial fans / Liquid cooling (optional)
- Service: Continuous 24/24h
- Operating temperature: -5°C to +45°C
- Relative humidity: Up to 95%
