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Radio Station Bases and Coverage (ERBs)
Content of this page : Datas of Radio Station Bases (ERB) and cellular operators covering in Brazil. Minimum distance between ERBs according to electromagnetic radiation level. Source: Anatel and Teleco.
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Station Bases authorized by Anatel
ERBs data bases
Anatel available in its site: ERBs addresses per cities and operators in Brazil.
STFC Radiocommunication Stations |
Nº of Radio Station Bases in Brazil
| Band |
Dec/05 |
Dec/06 |
Dec/07 |
Apr/08 |
May/08 |
Jun/08 |
| A |
9,924 |
10,485 |
11,078 |
11,272 |
11,270 |
11,343 |
| B |
8,531 |
8,765 |
9,339 |
9,587 |
9,625 |
9,646 |
| D |
8,833 |
9,305 |
9,756 |
10,039 |
10,036 |
10,051 |
| E |
5,006 |
5,507 |
6,009 |
6,098 |
6,154 |
6,190 |
| others |
- |
- |
- |
- |
89 |
262 |
| Total |
32,294 |
34,062 |
36,182 |
36,996 |
37,085 |
37,230 |
Coverage
Cities Attended by Cellular (%)
| % |
2004 |
2005 |
2006 |
2007 |
Jun/08 |
| attended |
49.5 |
55.8 |
58.2 |
59.5 |
65.5 |
| per 1 operator |
11.8 |
11.6 |
11.1 |
11.8 |
13.5 |
| per 2 operators |
8.6 |
8.0 |
8.2 |
8.2 |
9.5 |
| per 3 operators |
16.6 |
19.8 |
17.4 |
17.4 |
20.1 |
| per 4 operators |
12.5 |
16.4 |
21.5 |
22.1 |
22.3 |
| per 5 operators |
- |
- |
- |
- |
0.02 |
| not attended |
50.5 |
44.1 |
41.8 |
40.5 |
34.5 |
Population (%) attended by Cellular
| % |
2004 |
2005 |
2006 |
2007 |
Jun/08 |
| attended |
86.7 |
88.6 |
89.8 |
90.4 |
91.7 |
| per 1 operator |
4.5 |
3.6 |
3.4 |
3.7 |
3.5 |
per 2 operators |
4.5 |
3.5 |
3.6 |
3.6 |
4.0 |
| per 3 operators |
40.5 |
42.8 |
35.3 |
35.1 |
37.6 |
per 4 operators |
37.2 |
38.7 |
47.5 |
47.9 |
46.1 |
| per 5 operators |
- |
- |
- |
- |
0.2 |
| not attended |
13.1 |
11.4 |
10.2 |
9.6 |
8.3 |
Ucel, Teleco's Portal dedicated to cellular user, shows the actual datas of cities and % population covered by the operators in Brazil. It's also possible to check out cities and its cellular local ( same DDD).
Teleco's Commentary Cobertura Celular no Brasil presents consolidated datas from january 15th of 2005.
Attendance: published by Anatel (June 2008)
Anatel divulged the following datas: ERBs nº and attendance ( cities and population covered) in Brazil, March/2007.
| |
State |
N.º
ERBs |
Attendance |
SMP |
SMC |
Nº Cities. |
%
City. |
% Pop |
I |
3 |
Rio de Jan. |
4,380 |
92 |
100 |
99.95 |
| Esp. Santo |
938 |
76 |
97.44 |
99.51 |
| 4 |
M. Gerais |
5,123 |
845 |
99.06 |
98.97 |
| 8 |
Amazonas |
478 |
26 |
41.94 |
80.45 |
| Roraima |
33 |
4 |
26.67 |
72.79 |
| Pará |
754 |
96 |
67.13 |
87.26 |
| Amapá |
54 |
6 |
37.50 |
84.36 |
| Maranhão |
426 |
58 |
26.73 |
63.47 |
| 9 |
Bahia |
1,719 |
218 |
52.28 |
82.99 |
| Sergipe |
373 |
49 |
65.33 |
92.29 |
| 10 |
Piauí |
247 |
44 |
19.73 |
64.93 |
| Ceará |
896 |
110 |
59.78 |
87.77 |
| Rio G. Norte |
431 |
57 |
34.13 |
77.91 |
| Paraíba |
396 |
57 |
25.56 |
69.58 |
| Pernambuco |
1,106 |
109 |
58.92 |
88.13 |
| Alagoas |
423 |
60 |
58.82 |
85.20 |
II |
5 |
Paraná |
2,744 |
249 |
62.41 |
93.31 |
| Sta Catarina |
1,777 |
190 |
64.85 |
93.79 |
| 6 |
Rio G. Sul |
3,314 |
372 |
75.00 |
96.50 |
| 7 |
Mato G. Sul |
561 |
70 |
89.74 |
98.29 |
| Mato Grosso |
5,123 |
845 |
99.06 |
98.97 |
| Goiás |
1,261 |
155 |
63.01 |
94.43 |
| Dist. Federal |
974 |
1 |
100 |
100 |
| Tocantins |
200 |
37 |
26.62 |
65.98 |
| Rondônia |
216 |
33 |
63.46 |
90.40 |
| Acre |
109 |
13 |
59.09 |
87.06 |
III |
1/2 |
São Paulo |
7,925 |
644 |
99.84 |
99.85 |
Brazil |
37,476 |
3,759 |
67.56 |
91.06 |
Source: Anatel
Electromagnetic Radiation
The cellular antenna radiation levels in ERBs are defined in the Regulation about limitation of the electric fields exposition, magnetic and electromagnetic in the radiofrequency band between 9 KHz and 300 GHz. Annex to the resolution n. 303 from july 2nd of 2002. Click here and check the Regulation ( in portuguese)
How far should we stay from cellular antennas?
Minimum distance of the antennas to be lesser exposed:
minimum distance (m) = 8.16 sqrt(e.r.p/f)
which
f is the frequency, in MHz and
e.r.p. is the radiated effective power in the direction of bigger antenna gain, in watt.
Usual Values of Minimum distance
Using a usual band value found in cellular systems to the interested frequencies , we have:
| |
e.r.p |
| 1,000
W |
100
W |
10
W |
1
W |
| f
= 800 MHz |
9.1 m |
2.9 m |
0.9 m |
0.3 m |
| |
6.1 m |
1.9 m |
0.6 m |
0.2 m |
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