Icom IC-FR5300 handleiding
Handleiding
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INFORMATION
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• Typical installation example
A UHF base station transmitter is to be installed on
the roof of an oce.
The transmit power is 25 watts, there is 20 m of
RG-213 coaxial cable and the antenna is vertically
polarised dipole.
The specication of the RG-213 cable gives a loss
of 1.5 dB/10 m. There will be 3 dB loss for the 20 m
length used.
The RF power at the antenna input will be 12.5 watts.
The dipole antenna has a forward gain of 0 dBd or
1.6, giving an EIRP of 20 watts.
Referring to the table above for VHF/UHF vertical
antennas, this gives a front clearance distance of
approx. 1.5 m and a height clearance of 3 m.
The antenna installation needs to ensure that the
lowest part of the antenna is at least 3 m above any
point where the general public may gain access and
that they cannot pass within 1.5 m in front of the
antenna.
If there is no general public access to the roof in
question then the antenna could be mounted on a
short stub mast. If there is such access to the roof
then the antenna could be mounted on top of a short
mast of 3.2 m high. The mast position should be
such that the antenna can radiate clearly i.e. no other
object or structure is within 1.5 m (preferably more).
It should be relatively easy to full all these
recommendations.
If for any reason such minimum distances are
impossible to guarantee then some type of access
control fence or barrier around the antenna
installation should be provided.
Should a Yagi type antenna be used then you will
have to obtain a 3 dimensional polar plot of the
radiation characteristic from the manufacturer and
evaluate the clearance distances in both vertical and
horizontal planes.
• Operating Notes
All of the above comments on RF safety assume that
the radio is transmitting continuously in a constant
carrier mode such as FM or RTTY et c.
The RF exposure limits recommended by the EC are
based on the mean power averaged over a 6 minute
period.
Therefore if the total transmit time during any 6
minute period is reduced, then the installation will be
even further within the recommended limits.
Bekijk gratis de handleiding van Icom IC-FR5300, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
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 |
