RVR PJ3000M Solid State Amplifier (63139)

The PJ3000M is a modular power amplifier for audio FM broadcasting. The PJ3000M comprises three PJ1000M MosFet amplifiers connected using a HC3-1 hybrid combiner. The PJ3000M is housed in a standard 19” rack frame, 27HE high, of which 5HE are free and may be used for an exciter or other pieces of equipment.

Product features

• Totally modular amplifier composed of three PJ1000M separate amplifiers and a
  "state of the art" combiner system (HC3/3).
• Coupling system realized with "Suspended-Substrate Strip-Line Technology", equipped with internal protections (excess of unbalancing, excess of VSWR, over-temperature, overdrive)
  for the complete checking of the equipment.
• Exceptionally high gain of power amplifier with relatively low input.
• Automatic gain control providing fixed output power even in case of fluctuating drive power.
• High reliability, easy handling and consistent performance standard achieved among the various units due to total absence of tuning requirements.
• Very high efficiency of power amplifier, typically capable of more than 3000 W, output power with about 50 W of drive input power.
• Each amplifier is composed of four parallel 300 W R.F. power amplifier modules for
  highest reliability.
• These modules are coupled through a Wilkinson Splitter and Combiner realized with
  "Strip-Line Technology".
• For each amplifier: internal and Antenna VSWR, excessive temperature and excessive drive power protection, with indicator lights, which will put the transmitter driver in stand-by position in the event of failure.
• For each single amplifier is present a protection that in case of overcurrent on one 300 W power amplifier Module reduces the voltage on the drain of the pair of 300 W modules interesting in faulty; then, this protection card check the status of each single R.F. Power Amplifier module's protection fuse.
• High efficiency switching power supply.
• Compact size dimensions with built in power supply.
• Easily replaceable standard components.
• Each single amplifier and the HC3/3 are equipped of advanced recycling overload and protection system that provides automatic re-start after about 10 seconds of stand-by in case of fault. This procedure is repeated four times and in case of persisting fault, the cycle restarts again
  after 90 seconds, for four more times. If fault still persists, the stop becomes permanent. If instead, during one of the re-start the fault disappears the counting circuit system is resetted after a regular working period of 90 seconds.
• If one or more power amplifier modules fail (totally or partially) it automatically reduces
  output power to a safe value but continues transmitting.
• Terminals Strip for telemetry and remote control.

Technical specifications