South Midlands Communications Group

Pneumatic Telescopic Mast - NK-Series

The NK-Series of telescopic Hilomasts has a base section diameter of 4" and is pneumatically operated with either a manual foot pump or small air compressor.
Although designed for long term applications, the NK-Series is equally suited for experimental work. The top section diameter for fitting antennas is specified in the table below.

Please request a copy of our new Hilomast brochure for further details on other competitive products we specialise in. 

The table of masts below is only a small selection of possible mast configurations available to you. Due to the modular design of all Hilomast Pneumatic masts, we are able to offer masts in custom sizes, with or without locking collars, and in various colors and finishes. Please contact a member of the sales team for a friendly chat about your requirements.

Mast Height Extended Height Retracted Number Of Sections Diameter Of Top Section Diameter Of Base Section Vertical Headload Max. Wind Speed Unguyed Max. Wind Speed With Top Guys Basic Weight Of Mast
  (ft) (ft)   (inches) (inches) (lbs) (mph) (mph) (lbs)
NK 6 19' 4" 5' 5" 5 2 4 60 102 102 46
NK 9 29' 6" 7' 6" 5 2 4 49 71 85 57
NK 11 35' 9" 7' 10" 6 1.5 4 40 60 78 64
NK 16 52' 6" 13' 1" 5 2 4 44 40 70 97

† With non-rotating base      * Top guys recommended

The table shows the vertical head load that each mast will support and the maximum operational wind speed. The weight of the antenna, however, is not usually the main criterion when selecting a mast. The limiting factor is usually the ‘side surface area’ of the antenna.

The wind speeds shown are based on the following side surface areas:
NH Masts = 1 ft². NK = 1.5 ft². NL = 2.1 ft². NX = 3.2 ft². NY = 11.8 ft².

© Hilomast LLC 2017