Roof Rafter Mast Bracket with 1100 mm Ø 48 mm Mast – Adjustable for 55–90 cm Rafter Spacing
The AS51500 is an adjustable roof rafter mounting system supplied with a 1100 mm long steel antenna mast.
It is designed for satellite and antenna installations within a suitable roof structure and can, according to the available product data, be installed on, between or below structurally suitable roof rafters.
The included mast has an outside diameter of Ø 48 mm, a wall thickness of 2 mm and a total length of approximately 1100 mm.
Included Ø 48 × 2 mm mast
Mast specifications:
Outside diameter: Ø 48 mm
Wall thickness: 2 mm
Total length: Approx. 1100 mm
Two-piece mast design
The mast is divided approximately in the centre.
This simplifies handling and installation within an existing roof structure.
After assembly, the mast connection is additionally mechanically secured with a screw.
Rafter spacing 55–90 cm
The mounting frame can be continuously adjusted for rafter spacing from approximately:
55 cm
to 90 cm
The actual roof structure should be measured before installation.
Smaller rafter spacing
Product information states that smaller rafter spacing can be accommodated by shortening the designated tube ends.
This is a permanent modification and must only be carried out without interfering with connection, clamping or fixing areas.
Roof pitch 24–56°
The mast system can be adjusted for roof pitches from approximately:
24°
to 56°
within the mechanical adjustment range.
Mounting on, between or below rafters
Depending on the roof construction, installation is possible:
on top of the rafters
between the rafters
below the rafters
This provides several options for positioning the mast within the roof structure.
Galvanised steel construction
The mast is hot-dip galvanised according to the available legacy product data.
The mounting frame is also supplied with a galvanised surface.
Exact current coating thicknesses are not stated.
For satellite dishes up to Ø 100 cm
The available product data specifies use with satellite dishes up to approximately:
Ø 100 cm
This product specification does not replace evaluation of the complete installation.
Actual loading also depends on:
antenna weight
wind area
unsupported mast length
building height
local wind conditions
structural condition of the rafters
Suitable for different roof coverings
Because the structural mounting system is located within the roof, it can be combined with different roof coverings.
Legacy information also mentions beaver-tail style roof tiles as a possible application.
A separate roof penetration compatible with the actual roof covering is still required.
Separate roof sealing required
The AS51500 provides mechanical mast support only.
A complete roof installation may additionally require:
antenna roof tile or roof flashing
mast sealing collar
proper integration of the roof underlay
Cable routing through the mast
With a compatible mast cap with cable feed-through, antenna cables can be routed over the mast top and down inside the mast tube.
The suitable cable-routing cap is not included.
Other antenna applications
Depending on the complete mechanical design, the mast may also support suitable:
DVB-T/T2 antennas
DAB/DAB+ antennas
FM antennas
radio antennas
Technical specifications
Article reference: AS51500
Article number: 51500
EAN: 4050822515004
Product type: Roof rafter mast bracket with antenna mast
Material: Steel
Mast surface: Hot-dip galvanised according to product data
Mounting frame: Galvanised
Mast diameter: Ø 48 mm
Mast wall thickness: 2 mm
Mast length: Approx. 1100 mm
Mast design: Two-piece, divided in the centre
Rafter spacing: Approx. 55–90 cm
Roof pitch: Approx. 24–56°
Installation: On, between or below suitable rafters
Satellite dish size: Up to Ø 100 cm according to product data
Cable routing through mast: Possible with compatible separate mast cap
Roof sealing: Not included
Package contents
1 × AS51500 roof rafter mounting system
1 × two-piece Ø 48 × 2 mm antenna mast, total length approx. 1100 mm
Connection and mounting components according to product configuration
Satellite dish, LNB, roof flashing, mast sealing collar, cable-routing mast cap, coaxial cable and additional installation accessories are not included.