Type 73 MECHANICALLY EXTENDED

For over 40 years Clark Masts Type 73 field mounted portable masts have been the communications backbone of many armies. The main features, such as the aluminium alloy mast sections, the winch system which controls the guys during erection, the 3-legged erection gear and the mast lifting hoist which made the first Type 73 portable mast unique, are still there today. Whilst the basic system has not changed, there have been many detail improvements. However, with each improvement the matter of interchangeability has not been neglected.

Clark Masts Type 73 is a field mounted portable mast system which operators rapidly understand and can erect with confidence, even in very adverse weather conditions. Type 73 portable masts are available as field deployable kits with extended heights of 10, 13, 16, 18, 21, 30 metres and vertical headload capabilities from 50 to 75 Kg having a horizontal component from 70 to 150 Kg.

Item

Part
#

Qty
per Kit

The number of mast sections, mast section carriers, pickets, guy collars, spikes etc varies according to the actual height of the Type 73 portable mast to be erected. The part numbers shown in the table above include all items needed for a 10 metre field mast kit, Part Number 18130

2. Tube sections are fed into the central guide tube and one by one lifted using a special hoist, thus building up the mast.

3. Guys are attached at levels determined by the maximum mast height and are held in controlled tension by the mechanical winch unit.

4. After erection the mast may be rotated through 360 degrees.

5. Retraction is the above procedure reversed.

4. Erection example 20 metres: three persons with typical antenna, 45 minutes