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Designed for FM radio transmitters, this amplifier incorporates microstrip technology and an SD2942 MOSFET transistor to enhance ruggedness and reliability.

  • The SD2942 mosfet is new technology that was recently introduced by ST. This is the first VHF 48V push-pull mosfet with a 350W factory power rating.
  • Our PA's use teflon low impedance high temperature coax to form high power matching transformers.
  • We use automatic coax and wire processing tools to guarantee consistent performance from unit to unit. All of the surface mount components are reflowed. There is no hand soldering of chip components.
  • Quick facts about current draw: For 350 watts current draw is 10.1 - 10.5 amps @ 48V.
  • Each pallet amplifier we sell is tested on HP 8753 vector network analyzers. Phase, gain, return loss and saturated power parameters are measured on each PA module before it is allowed to leave our factory.

Additional information

Weight 2 kg
Product can be split into multiple boxes

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specification

Frequency coverage
86 – 110MHz

Power Input
2.5W, 3.0W max

Input Return Loss (88 – 98)
 -8, -10 typ

Input Return Loss (98 – 108)
-10, -12 typ

Power gain (300W output)
20db, 21dB typ

Supply Voltage
48v, 52V Max

Insertion Phase Variation (unit to unit)     
+/-10 degrees

Power Gain (unit to unit)
+/-0.5 dB

F2 Second Harmonic
-30dB                                

F3 Third Harmonic
-35dB

Bias Current
15ma

VSWR Load Mismatch (All phase angles, Id=5A)  
10 to 1

features

86-110MHz
48 Volts
SD2942 MOSFET
Input/Output 50 ohms
Pout 350W min. w/4 watt input.
20% higher power saturation than SD2932, MRF151G and BLF278
18 dB gain minimum
Low distortion Class B push-pull
Temperature compensated bias
Compact size; LxWxH 4.0 x 2.0 x 1.5 inches
Standard 1/4 inch copper heat spreader

  • 86-110MHz
  • 48 Volts
  • SD2942 MOSFET
  • Input/Output 50 ohms
  • Pout 350W min. w/4 watt input.
  • 20% higher power saturation than SD2932, MRF151G and BLF278
  • 18 dB gain minimum.
  • Low distortion Class B push-pull.
  • Temperature compensated bias
  • Compact size; LxWxH 4.0 x 2.0 x 1.5 inches
  • Standard 1/4 inch copper heat spreader.

Brand

Broadcast Concepts

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Offers Broadcast Concepts 350W SD2942