Solid state VHF Transmitter - STX-II

8kW configuration of a 20kW ST-20 module

Fully populated 40kW ST-40 module

The ATRAD STX-II Transmitter family has been specifically designed to be used in Atmospheric Pulsed Radars for wind profiling at heights between 1 kilometre and 20 kilometres (actual height coverage will depend on location).

The STX-II VHF Transmitter has many applications, which include:

Forecasting and Nowcasting
Rocket Launch support
Monitoring Atmospheric Pollutant Dispersal
Atmospheric and Meteorological Research
Weather Balloon Launch Sites

The building block of an STX-II transmitter is a sub-rack housing up to six 4kW transmitter modules. Subracks can then be combined to further increase the available output power. ATRAD has two standard STX-II configurations: the ST-20 (20 kW peak output power) and ST-40 (40 kW peak output power). However, due to its modularity an STX-II can be configured to deliver lower and higher output powers as required by the customer.

ATRAD has supplied Atmospheric Radars to customers around the world. It has established links with many organisations and institutions researching atmospheric phenomena such as wind velocities, turbulence, atmospheric waves and the energy and temperature exchange between different layers of the atmosphere.

ATRAD has formal links with the Atmospheric Physics Research Group in the Department of Physics and Mathematical Physics at Adelaide University in South Australia. ATRAD has access to the University's large field station at Buckland Park north of Adelaide to test and develop new equipment.

ATRAD can customise your system to meet your requirements and provide total life of system support.

STX-II TRANSMITTER SPECIFICATIONS

Operating Frequency Range:	30 MHz to 65 MHz (fixed at factory)
Peak Envelope Power:	40 kW PEP (for ST-40 variant)
Pulse shapes:	Gaussian, Square
Maximum duty cycle:	10% for Gaussian pulse, 12% for square pulses
Inpedance (input/output):	50 ohms
Protection:	Forward and Reverse Power Monitoring with Drive Reduction
Output level:	Adjustable from 0 to 100%
Transmitter/Receiver Switching:	External. Transmitter Modules can be individually disabled.
Cooling:	Forced Air
Mains Power Requirements:	Three Phase 110/120 or 220/240 Volts AC 12 kW total (maximum)
Ambient temperature:	+5 to +35 Degrees C
Physical Details:	The STX-II Transmitter is housed in sub-rack(s) compatible with a 19" Rack.

OTHER NOTES

This is an Export Brochure.

Specification are indicative only and subject to change without notice

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