370-450 MHz Amplifier Systems

WV Communications is proud to announce the 370-450MHz 10kW Amplifier System, Model SYS1018 — part of a 370-450MHz amplifier line that also includes 500W (SYS1031) and 200W (PA1069) configurations.

Features

• Dependable; efficient
• Reports status on each individual LDMOS transistor
• Quiet; air-cooled

370-450MHz 10kW Amplifier System

The SYS1018 amplifier system offers state-of-the-art design of RF circuitry, digital status, and control. WV has been a leader in the industry, offering Class AB LDMOS linear air-cooled amplifier systems with better than 50% efficiency measured from AC input to RF output power.

Four (4) power supply drawers, eight (8) High Power Amplifier (HPA) drawers, one controller drawer, and one high-power combiner assembly make up this powerful, efficient system.

Each driver and amplifier module incorporates a CPU card monitoring the detected RF output power for the module, the two LDMOS power transistor drain currents, and the module temperature. Additionally, each amplifier drawer has a dedicated CPU module reporting forward and reflected RF output power.

Power Supply Redundancy

Each power supply drawer contains two (2) banks (channels) of power supplies, three (3) in each channel, for a total of six (6) per drawer. The power supplies are configured to provide N+1 redundancy for each HPA drawer. The power supplies also employ a CPU module reporting the output voltage and current for both channels and the health status of each power supply module.

Ethernet Monitoring

All of the data reported by the CPU modules is collected by the Main Controller CPU via an RS-485 serial communications bus, including:

• System forward and reflected power
• Forward and reflected power for all 8 power amplifier drawers
• Input power
• Output power for each power amplifier module (64)
• Output power for each driver (8)
• Transistor drain current for every power device in the system (128 in PAs and 16 in drivers)
• Power supply drawer output voltages, currents, and fault information
• Temperature for all power amplifier and driver modules, and amplifier drawers

All data is returned by a single command in binary format (666 bytes) via Ethernet.

The SYS1018 amplifier system offers state-of-the-art Ethernet communications for both control and status reporting, enabling the user to get detailed information on all components’ status.

System status, control, and setup screens are available on the integrated LCD display.

Sample screens shown above; the actual screen may vary based on the selected model and options.

Fault Logging

A fault history of the last fifty faults is available. Each fault, along with its timestamp, can be remotely queried or viewed on the LCD screen.