User's Manual Part 2

RBS 2308 and RBS 2309 User’s Guide
Table 20 Attenuati
on for Different Cables
Attenuation, dB/m (CABLE LOSS)
Feeder Type
Andrew
GSM 800 GSM 900 GSM 1800 GSM 1900
1/4-in. LDF1
0.124 0.129 0.189 0.195
1/4-in. FSJ1 (flex)
0.179 0.186 0.270 0.278
3/8-in. LDF2
0.106 0.110 0.161 0.166
3/8-in. FSJ2 (fl
ex)
0.121 0.127 0.185 0.191
1/2-in. LDF4
0.066 0.069 0.101 0.104
1/2-in. FSJ4 (flex)
0.107 0.112 0.166 0.171
7/8-in. LDF5
0.037 0.039 0.058 0.060
11/4-in. LDF6
0.027 0.028 0.042 0.043
15/8-in. LDF7
0.022 0.023 0.035 0.036
Note: If the c
able type is not found in the table above, then the values must
be taken from
the manufacturer’s specifications.
Example of Ca
lculating the Total Feeder Attenuation (GSM 900)
P008453A
AB
A + B = Total feeder attenuation
Figure 42 Example of Calculating the Total Feeder Attenuation
98
EN/LZT 720 0027 Uen R8A 2006-06-27