Twin Engineers
1.5 KW Mosfet Power Amplifier for F.M. Transmitter
 
 
Model No.: TW/FMPA/1.5KW
 
FEATURES
 
  • The VHF Amplifier {Mosfet} is used in VHF FM Transmitter for generating the rate output power 1500W in the frequency range 87.5 to 108 Mhz.
  • The required driving power is about 3W to 4W Maximum. The heat losses are dissipated Via Heat Sink and Air duct.
  • The Output is produced using Six 300W Power amplifier which are connected in parallel via coupling network. Six Power Amplifier Stages are driven by 80W driver amplifier.
  • The Mosfet Operate in broadband "C" mode so that no adjustment is required when frequency is changed The Mosfet are mounted on a heat spreader Copper Block.
  • The Mosfet power Amplifier are connected in groups of two via a three way coupler. The two such halves with rated power of 750W each are combined via 0 Degree coupler to obtain 1500W.
 
SPECIFICATIONS
 
  • Frequency range: 87.5 to 108 Mhz
  • Rated Output power: 1500 W
  • Nominal Load Impedance: 50 Ohms
  • RF check point at output: 3 to 5V /50 ohms
  • Driving power: 3 to 4 W
  • Supply Voltage: 26 to 28V
  • Power Consumption: Appx 2200W [ typ ]
  • Supply Voltage for Monitor: + - 12V
  • Phase: 28 deg.
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