Icom IC-FR5300 handleiding
Handleiding
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11
5
INFORMATION
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Installation notes
• Compliance of base station transmitter
installations with EN50385
The installation of this equipment and it’s associated
antenna should be made in such a manner as to
respect the EC recommended electromagnetic (EM)
eld exposure limits. (1999/519/EC)
In order not to exceed these exposure limits it is
necessary to determine the ‘Compliance Boundary,’
that means the volume within which the EM eld
radiated by the transmitter/antenna installation may
exceed the 1999/519/EC limits. You will then need
to ensure that members of the general public do not
have access within this area. The actual Compliance
Boundary for this repeater will be totally dependant on
the antenna, feeder, RF amplier and other passive
or active devices used in the installation.
The RF output power of this repeater is 25 watts.
The gures contained in this guide are based on
the recommended limits for the general public and
are obtained by ‘worst case’ numerical analysis.
For a denitive evaluation of any given installation,
measurements should be made with an EM eld
meter and a broadband calibrated probe.
• Installation
The antenna should be installed as high as possible
for maximum eciency and minimum EM eld at
ground-level. The evaluation of radiated eld should
take into account any additional RF ampliers used,
any loss in the antenna feeder cable and the gain
of the antenna used as well as its polar radiation
pattern.
If there are any objects or structures larger than half
a wavelength close to the antenna, or within the
clearance distances specied, then these can cause
reections which will have an eect on the overall
radiation pattern.
For any installation you need to consider ‘height
clearance’ (i.e. the height above any place where
persons may have access) and ‘front clearance’
(i.e. the distance in front of the antenna where the
radiated eld may exceed the recommended limits).
Normally with an antenna installed on a reasonably
high mast or tower, there will not be any access point
directly in front but care should be exercised when
there are other buildings higher than the antenna
within the vicinity.
• Installation with a vertical type antenna at VHF-UHF
You need to consider the distances between the
antenna and any point where persons may have
access. Allowing an average height of 1.8 m for a
person in the vicinity of the antenna the clearance
distances can be evaluated as follows. For the
antenna a forward gain of 1.6 and downward gain of
unity has been assumed.
Power EIRP Distance
Height
clearance
Front
clearance
1 watt 1.6 watts 0.32 m
2.1 cm
0.4 m
10 watts 16 watts 1 m 2.8 m 1.3 m
25 watts 40 watts 1.6 m 3.4 m 2 m
100 watts 160 watts 3.2 m 5 m 4 m
1 kW 1600 watts 10 m 12 m 13 m
• Installation with a yagi or directive type antenna
Exposure distance assumes that the predominant
radiation pattern is forwards and that radiation
vertically downwards is at unity gain (sidelobe
suppression is equal to main lobe gain). This is true
of almost every gain antenna today. Exposed persons
are assumed to be beneath the antenna array and
have a typical height of 1.8 m.
The gures assume the worst case emission of
constant carrier.
RF power Clearance heights by frequency band
Watts 10–2 m 70 cm
23 cm
13 cm and
above
1 2.1 m 2 m 2 m 2 m
10 2.8 m 2.7 m 2.5 m 2.3 m
25 3.4 m 3.3 m 2.7 m 2.5 m
100 5 m 4.7 m 3.6 m 3.2 m
1000 12 m 11.5 m 7.3 m 6.3 m
EIRP
Forward clearance, EIRP by frequency band
Watts 10–2 m 70 cm
23 cm
13 cm and
above
100 2 m 2 m 1.1 m 0.7 m
1,000 6.5 m 6 m 3.5 m 3 m
10,000 20 m 18 m 11 m 7 m
100,000 65 m 60 m 35 m 29 m
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Productinformatie
| Merk | Icom |
| Model | IC-FR5300 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 2740 MB |
Caratteristiche Prodotto
| Ingebouwd display | Ja |
| Vermogensverbruik (max) | 50 W |
| Ondersteunde beveiligingsalgoritmen | SNMP |
| Rack-montage | Ja |
| Aantal kanalen | 32 kanalen |
