Installation Notes - Icom i9100 Instruction Manual

21
CE

INSTALLATION NOTES

For amateur base station installations it is recom-
mended that the forward clearance in front of the an-
tenna array is calculated relative to the EIRP (Effective
Isotropic Radiated Power). The clearance height below
the antenna array can be determined in most cases
from the RF power at the antenna input terminals.
As different exposure limits have been recommended
for different frequencies, a relative table shows a
guideline for installation considerations.
Below 30 MHz, the recommended limits are specified
in terms of V/m or A/m fields as they are likely to fall
within the near-field region. Similarly, the antennas
may be physically short in terms of electrical length
and that the installation will require some antenna
matching device which can create local, high inten-
sity magnetic fields. Analysis of such MF installations
is best considered in association with published guid-
ance notes such as the FCC OET Bulletin 65 Edition
97-01 and its annexes relative to amateur transmitter
installations.
The EC recommended limits are almost identical to
the FCC specified 'uncontrolled' limits and tables exist
that show pre-calculated safe distances for different
antenna types for different frequency bands. Further
information can be found at http://www.arrl.org/.
• Typical amateur radio installation
Exposure distance assumes that the predominant ra-
diation pattern is forward 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 figures assume the worst case emission of a con-
stant carrier.
For the bands 10 MHz and higher the following power
density limits have been recommended:
10–400 MHz
435 MHz 2.2 W/sq m
EIRP clearance heights by frequency band
Watts 10–2 m
1 2.1 m
10 2.8 m
25 3.4 m
100 5 m
1000 12 m 11.5 m
201
2 W/sq m
70 cm 23 cm 13 cm and above
2 m 2 m
2.7 m 2.5 m 2.3 m
3.3 m 2.7 m 2.5 m
4.7 m 3.6 m 3.2 m
7.3 m 6.3 m
Forward clearance, EIRP by frequency band
Watts 10–2 m
100
1,000
10,000
100,000
In all cases any possible risk depends on the trans-
mitter being activated for long periods. (actual recom-
mendation limits are specified as an average during 6
minutes) Normally the transmitter is not active for long
periods of time. Some radio licenses will require that a
timer circuit automatically cuts off the transmitter after
1–2 minutes etc.
Similarly some modes of transmission, SSB, CW, AM
etc. have a lower 'average' output power and the as-
sessed risk is even lower.
• List of Country codes (ISO 3166-1)
Country
1 Austria
2 Belgium
3 Bulgaria
4 Croatia
5 Czech Republic
6 Cyprus
7 Denmark
8 Estonia
9 Finland
10 France
11 Germany
12 Greece
2 m
13 Hungary
14 Iceland
15 Ireland
16 Italy
17 Latvia
70 cm 23 cm 13 cm and above
2 m 2 m 1.1 m
6.5 m 6 m 3.5 m
20 m 18 m 11 m
65 m 60 m 35 m
Versions of the IC-9100 which display the
"CE" symbol on the serial number label,
comply with the essential requirements of
the European Radio and Telecommunica-
tion Terminal Directive 1999/5/EC.
This warning symbol indicates that this
equipment operates in non-harmonised
frequency bands and/or may be subject to
licensing conditions in the country of use.
Be sure to check that you have the correct
version of this radio or the correct program-
ming of this radio, to comply with national
licensing requirement.
Country
Codes
AT 18 Liechtenstein
BE 19 Lithuania
BG 20 Luxembourg
HR 21 Malta
CZ 22 Netherlands
CY
23 Norway
DK 24 Poland
EE 25 Portugal
FI 26 Romania
FR 27 Slovakia
DE 28 Slovenia
GR 29 Spain
HU 30 Sweden
IS 31 Switzerland
IE 32 Turkey
IT 33 United Kingdom
LV
0.7 m
3 m
7 m
29 m
Codes
LI
LT
LU
MT
NL
NO
PL
PT
RO
SK
SI
ES
SE
CH
TR
GB