Download Kathrein ARA 20

Installing the antenna
When installing the antenna mast, ensure that it is standing
upright.
a) Requirements on the antenna carrier (to DIN EN 60728-11)
Use only masts or support tubes that are designed for
installation of antennas. Other tubes generally do not have
the strength required to withstand the forces of wind and
weather.
•
Select a mast or an extending mast with a wall thickness
of at least 2 mm and a diameter of 32-50 mm at the top
(see appendix for mast recommendations).
•
For mast installation on a roof, the mast must be clamped
for at least 1/6 of its free length (in the example bottom
right this is 0.7 m).
b) Several antennas on a single antenna carrier:
• If a parabolic antenna is also to be mounted, attach it as far
down the mast as possible, so as to minimise the bending
moment at the clamping point.
Ø 32-50 mm
Mb
= W 1 a1 + W 2
Under no circumstances exceed the maximum value for
the loading on the mast or mast support, as stated in the
Technical Data. Sufficient recognition of the maximum loading
is achieved if you arrange your antenna system as shown
in example bottom right and use conventional domestic
antennas together with mast components from a specialist
supplier (tube in steel grade St 52 with outer diameter
50 mm and wall thickness 2.5 mm at the mast clamping
point – e.g. ZSH 59 from Kathrein).
ARA
30
ARA10,
10,20
20oder
or 30
N
m
Nm
4.0 = 240
x 4,0
+
Olympia 130
(AON 65)
59
3.8 = 224
x 3,8
+
a1 = 4,0
4.0 m
Monoka 110
(AVK 11/xx)
63
x 2,8
2.8 = 176
a2 = 3.8
3,8 m
+
Offset-Parabolantenne
Offset
parabolic antenna
CASxx (57-cm -Ø)
If you arrange the structure differently you
must calculate wind loading and bending
moment at the clamping point as specified
in DIN EN 60728-11 (or have a specialist do
the calculation for you).
300
1.4 = 420
x 1,4
a3 = 2.8
2,8 m
(Reflektormitte)
(Centre
of the reflector)
1,4 m
1.4
Zulässig: 1280 Nm
Permissible:
1060 Nm
1 m *)
Mast ZSH 59
Nach DIN EN
60728-11
muss die
*) According
to DIN
EN 60728-11
Masteinspannlänge
mindestens
the
mast clamped length
must be1/6
derleast
Mastlänge
betragen.
at
1/6 of the
mast length.
3/6
a3 +...
Mb
= Bending
Biegemoment
moment
W1,2,3 = angegebene
Windlast
Katalog
Wind load stated
in theim
catalogue
a1,2,3 = Mastlänge
der antenna
Antenne bis
Mast lengthvon
of the
up
the clamping point
zurtoEinspannstelle
60
•
a2 + W3