PT Series
Original air-operated telescopic
Clark mast: 4.5 Inch base tube.

WT Series
Heavy duty masts for heavy
Antennas: 6 Inch base tube.

XT Series
The heavy-weight of the
range: 8 Inch base tube.

YT Series
A special addition to the
range: 5 Inch base tube.

The advantages of using low pressure air to extend a telescopic portable mast are well known. Clark Masts Phase 2 portable masts have all of these advantages including simplicity of construction minimising maintenance, smooth operation up and down, are simple to install, have low roof protrusion when vehicle mounted, are intrinsically safe, and are torsionally extra stiff when fully extended. Clark Masts large number of different Phase 2 masts means that there should be a mast to suit your application. Some of these applications include their use as Aerial Photography Masts, Security Camera Masts, Photo Masts, DGPS Masts, Survey Masts, Pump Up Masts, Portable Towers, Pneumatic Masts, Emergency Masts, Lighting Masts, Meteorological Masts, Instrument Masts, Radio Masts, Emergency Services Masts, Vehicle Mounted Masts, Trailer Mounted Masts, Portable Poles, SES Masts, CFA Masts, CFS Masts, Fire and Rescue Masts, Air Operated Masts, Communications Masts, Cellular Masts, Radio Survey Masts, Police Masts, ILS Masts, Fire Brigade Masts, Microwave Masts, Outside Broadcast Masts, Surveillance Masts, Telescopic Masts, Military Masts and Alloy Masts.

As Clark Masts Phase 2 portable mast performance also depends on the installation accessories, Clark Masts have designed their accessories for maximum performance. A wide range of Air Sources and portable mast controllers is also available. The four Phase 2 portable mast series are unified into one broad family spanning heights from 3 to 30 metres, and headload capacities from 5 to 150 Kg (300 Kg on special order).

Whether deployed directly in the field or mounted in or on a vehicle or shelter, Clark Masts Phase 2 portable mast models provide the performance required at generally the lowest total cost. Longevity has always been a design criteria for Clark Masts. Many customers still operate masts 30-40 years old and keep them in perfect order with readily available spare parts when necessary. Portable Masts Australia Pty Ltd operate a service/spare parts centre in Melbourne, Australia for all Clark Masts portable masts, including the Phase 2 Series.

Telescoping sections:
High strength Corrosion-resistant Aluminium Alloy.

Surface Finish:
Anodised natural colour or dyed.

General Finish:
Standard paint colour - white or NATO green. Other colours, including
desert sand, to order.

Maximum Operating Air Pressure:
1.7 bar (25 psi or 1.8 Kg/cm sq.).

Operating Temperature:
+55 degrees to -40 degrees C (dry).

Storage Temperature:
+65 degrees to -55 degrees C (dry).

Icing Risk:
Similar to any other mechanical device in conditions of temperature
change between +3 and -5 degrees C. Without precautions 5%. With
precautions <1%.

Air Leakage:
Expected pressure drop: Zero to 0.4 bar (0 to 6 psi).

Environmental Conditions:
Clark Masts portable masts have been tested extensively in nature's test house for
Tropical Life, Salt Atmosphere, Dry Heat, Damp Heat, Driving Rain,
Shock, Vibration as well as High and Low Temperatures. Further
more, by following simple procedure there are no limitations for
transport in un-pressurised aircraft.

Quality Assurance Standards:
AQAP 120 including ISO 9002.

CLARK MASTS PHASE 2 PORTABLE MAST 
SPECIFICATIONS AT A GLANCE