Digital High Frequency Analyser HF W 35C
© Gigahertz Solutions GmbH, 90579 Langenzenn, Germany
Revision 4.7 (October 2007)
Page
13
Why no column „dBm“?
Most recommended building biology values for HF
radiation are given in W/m², which is why this instru-
ment is displaying in power density, µW/m² resp.
mW/m². A display in dBm as e.g. on a spectrum ana-
lyzer requires transformation by a complicated formula,
which depends on frequency and specifics of the an-
tenna used. A “reconversion” therefore does not make
sense.
Conversion Table
( µW/m² to V/m )
µW/m²
mV/m
µW/m²
mV/m µW/m²
mV/m
0,01
1,94
1,0
19,4
100 194
-
-
1,2
21,3
120 213
-
-
1,4
23,0
140 230
-
-
1,6
24,6
160 246
-
-
1,8
26,0
180 261
0,02
2,75
2,0
27,5
200 275
-
-
2,5
30,7
250 307
0,03
3,36
3,0
33,6
300 336
-
-
3,5
36,3
350 363
0,04
3,88
4,0
38,8
400 388
0,05
4,34
5,0
43,4
500 434
0,06
4,76
6,0
47,6
600 476
0,07
5,14
7,0
51,4
700 514
0,08
5,49
8,0
54,9
800 549
0,09
5,82
9,0
58,2
900 582
0,10
6,14
10,0
61,4
1000 614
0,12
6,73
12,0
67,3
1200 673
0,14
7,26
14,0
72,6
1400 726
0,16
7,77
16,0
77,7
1600 777
0,18
8,24
18,0
82,4
1800 824
0,20
8,68
20,0
86,8
2000 868
0,25
9,71
25,0
97,1
2500 971
0,30
10,6
30,0
106
3000 1063
0,35
11,5
35,0
115
3500 1149
0,40
12,3
40,0
123
4000 1228
0,50
13,7
50,0
137
5000 1373
0,60
15,0
60,0
150
6000 1504
0,70
16,2
70,0
162
7000 1624
0,80
17,4
80,0
174
8000 1737
0,90
18,4
90,0
184
9000 1842
