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4075 High power HF transmitter

Compact rack mounted communications solution

The Barrett 4075 high power HF Transmitter is a compact rack mounted communications solution developed for base station applications in large HF networks. It can be supplied in 1kW and 500 W versions.

The transmitter comes as a complete package with an exciter, power supply, liquid cooled linear power amplifier, interconnecting cables and all required rack mount hardware.

Features

Liquid cooled linear amplifier
The 4075 linear amplifier is designed and engineered for modern communications which are heavily data orientated, requiring the equipment to work at high duty cycles for extended periods of time. The unique liquid cooled design increases efficiency resulting in less system deterioration due to overheating in the power stages, extending overall equipment service life. The amplifier provides continuous duty cycle (100%) at 1kW.

Field re-programmable via USB
The 4075 system is field re-programmable via USB allowing the end user to update system software.

Overload protection
Intelligent electronic controls protect the 4075 from input and output overload while providing a sophisticated early warning and a diagnostic interface for system monitoring and event logging.

Other features:

  • 1.6 – 30 MHz continuous coverage
  • 1 kW or 500 W continuous duty cycle (100%)
  • USB, LSB (SSB), CW, FSK, AM
  • Remote control via IP and WiFi
  • Compatible with existing 4 & 6 digital selective calling radio networks
  • 2G & 3G Automatic Link Establishment (ALE) options
  • ARINC ICAO Annex 10 Aeronautical Selcall option
  • ED-137C Interoperability Standard*

General

Frequency coverage
1.6MHz to 30MHz

Channel capacity
1000 with 4050 HF Transceiver

Modes
J3E (USB, LSB) – H2B (AM) – J2A (CW) – B2B (AFSK) Software-Defined filter bandwidth

Power output
1000W PEP or 500W PEP

Duty cycle
100%, Continuous PEP, CW

Exciter
4050 HF SDR transceiver

User environment

Temperature
-20°C to +65°C operational
-40°C to +85°C storage

Humidity
95% relative, non condensing

Altitude
3000 m above sea level (not airborne), 9000m transportation