Mast mounting and mast calculation
(fig.1)
- Check carefully when mounting the mast that the mast
is mounted vertically.
- Use only masts and mast material specifically
designed for antenna installation. Other piping is
generally not suitable for antenna installation as it
does not provide sufficient stability against wind and
weather influences. Kathrein masts and clamps are
specifically designed for antenna installation. See
Kathrein mast tables on page 3 of this guide.
- The span-width of the Olympia antennas is for the
clamp range 22 to 60 mm.
- When mounting a mast on a roof, at least 1/6 of the
length must be clamped firmly.
- Ensure that the mast clamps are mounted on firm
materials (wood, concrete, brickwork).
*) On buildings higher than 20 stories, a dynamic pressure of 1100 N/m
≤
is
considered.
Mounting several antennas on one mast
When mounting several antennas on one mast, the
maximal loading limits of the mast or the clamps must
not be exceeded.
Antenna installation
(fig 2)
1. Connect together the antenna elements (dependant
on type) and firmly affix using the butterfly nuts
provided.
2. Mount the dipole with the cable connection housing
on to the antenna’s main boom (4 square) using the
provided milled nut.
3. Open up the back-reflector grid and affix to the
antenna boom with the provided butterfly nuts.
Cable connection housing
(fig 3-5)
1. Unscrew the milled nut on the cable connection
housing and remove the cover.
2. Isolate the cable.
3. Open the cable pull-secure clamp and the cable
connection clamp.
4. Connect the cable and clamp in firmly.
5. Replace the cover and screw down firmly.
6. Install the cable so that it does not flatter or is under
any friction (eg with cable ties, isolating band or
cable clamps).
7. To ensure that no water can flow into the mast or
seep into walling lay the cable with a drip-bend (fig 5).
Antenna alignment
1. Align the antenna until the best reception results are
achieved using a TV or signal meter. Set to a suitable
programme.
2. Firmly screw down the butterfly nuts on the antenna’s
mast clamp.
935.543/A00/800/2.3e
4. For the types AOS 32, AOS 65 and AOT 65 place the
bow-boom on the marked positions and affix firmly
using the provided butterfly nuts.
5. Open up the mast clamp and affix the antenna to the
mast. Primarily, only screw down the fixing screws
lightly to allow one to align the antenna for best
reception.
Fig. 3
Fig. 4
Fig. 5
M
b
= W
1
· a
1
· + W
2
· a
2
+ W
3
· a
3
+ …
M
b
= Bending moment
W
1,2,3
= Given windloading*)
a
1,2,3
= Mast length from the antenna
to upper mast clamp
Fig. 2
Fig. 1
*) As per DIN EN 50083-1 the mast clam-
ped length must be at least 1/6th of its
overall length
Offset parabol antenna
CAS.. (57 cmØ)
Allowed 1280 Nm
2
