Installation Notes - Icom IC-7600 Instruction Manual

INSTALLATION NOTES

For amateur base staton nstallatons t s recom-
mended that the forward clearance n front of the an-
tenna array s calculated relatve to the EIRP (Effec-
tve Isotropc Radated Power). The clearance heght
below the antenna array can be determned n most
cases from the RF power at the antenna nput term-
nals.
As dfferent exposure lmts have been recommended
for dfferent frequences, a relatve table shows a
gudelne for nstallaton consderatons.
Below 30 MHz, the recommended lmts are specfied
n terms of V/m or A/m fields as they are lkely to fall
wthn the near-feld regon. Smlarly, the antennas
may be physcally short n terms of electrcal length
and that the nstallaton wll requre some antenna
matchng devce whch can create local, hgh ntensty
magnetc felds. Analyss of such MF nstallatons s
best consdered n assocaton wth publshed gud-
ance notes such as the FCC OET Bulletn 65 Edton
97-01 and ts annexes relatve to amateur transmtter
nstallatons.
The EC recommended lmts are almost dentcal to
the FCC specfied 'uncontrolled' lmts and tables exst
that show pre-calculated safe dstances for dfferent
antenna types for dfferent frequency bands. Further
nformaton can be found at http://www.arrl.org/.
• Typical amateur radio installation
Exposure dstance assumes that the predomnant ra-
daton pattern s forward and that radaton vertcally
downwards s at unty gan (sdelobe suppresson s
equal to man lobe gan). Ths s true of almost every
gan antenna today. Exposed persons are assumed
to be beneath the antenna array and have a typcal
heght of 1.8 m.
The fgures assume the worst case emsson of a
constant carrer.
For the bands 10 MHz and hgher the followng power
densty lmts have been recommended:
10–50 MHz 2 W/sq m
Vertical clearance by EIRP output
1 Watts 2.1 m
10 Watts 2.8 m
25 Watts 3.4 m
100 Watts 5 m
1000 Watts 12 m
Forward clearance by EIRP output
100 Watts 2 m
1000 Watts 6.5 m
10,000 Watts 20 m
100,000 Watts 65 m
In all cases any possble rsk depends on the trans-
mtter beng actvated for long perods. (actual recom-
mendaton lmts are specfied as an average durng 6
mnutes) Normally the transmtter s not actve for long
perods of tme. Some rado lcenses wll requre that a
tmer crcut automatcally cuts off the transmtter after
1–2 mnutes etc.
Smlarly some modes of transmsson, SSB, CW, AM
etc. have a lower 'average' output power and the as-
sessed rsk s even lower.
Versons of the IC-7600 whch dsplay the
"CE" symbol on the seral number seal,
comply wth the essental requrements of
the European Rado and Telecommunca-
ton Termnal Drectve 1999/5/EC.
Ths warnng symbol ndcates that ths
equpment operates n non-harmonsed
frequency bands and/or may be subject to
lcensng condtons n the country of use.
Be sure to check that you have the correct
verson of ths rado or the correct pro-
grammng of ths rado, to comply wth na-
tonal lcensng requrement.
• List of Country codes (ISO 3166-1)
Country Codes
1 Austra AT
2 Belgum BE
3 Bulgara BG
4 Croata HR
5 Czech Republc CZ
6 Cyprus CY
7 Denmark DK
8 Estona EE
9 Fnland FI
10 France FR
11 Germany DE
12 Greece GR
13 Hungary HU
14 Iceland IS
15 Ireland IE
16 Italy IT
17 Latva LV
15
CE
Country Codes
18 Lechtensten LI
19 Lthuana LT
20 Luxembourg LU
21 Malta MT
22 Netherlands NL
23 Norway NO
24 Poland PL
25 Portugal PT
26 Romana RO
27 Slovaka SK
28 Slovena SI
29 Span ES
30 Sweden SE
31 Swtzerland CH
32 Turkey TR
33 Unted Kngdom GB
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