User's Manual

MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 13
For convenience, Table 4 lists several antenna system gains and shows the
maximum allowable power setting of the radio. Note that a gain of 6 dB or
less entitles you to operate the radio at full power output—30 dBm (1 watt).
Table 4. Antenna system gain vs. power output setting (USA)
for 900 MHz models to achieve +36 dBm EIRP
Antenna System Gain
(Antenna Gain in dBi
a
minus Feedline Loss in dB
b
)
a. Most antenna manufacturers rate antenna gain in
dBd in their literature. To convert to dBi, add
2.15 dB.
b. Feedline loss varies by cable type and length. To
determine the loss for common lengths of feedline,
see Table 2 on Page 11.
Maximum Power
Setting
(in dBm)
EIRP
(in dBm)
6 (or less) 30 36
82836
10 26 36
12 24 36
14 22 36
16 20 36
Table 5. Antenna system gain vs. power output setting (USA)
for 2400 MHz models to achieve +36 dBm EIRP
Antenna System Gain
(Antenna Gain in dBi
a
minus Feedline Loss in dB
b
a. Most antenna manufacturers rate antenna gain in
dBd in their literature. To convert to dBi, add
2.15 dB.
b. Feedline loss varies by cable type and length. To
determine the loss for common lengths of feedline,
see Table 2 on Page 11.
Maximum Power
Setting
(in dBm)
EIRP
(in dBm)
2 dB 27 29
10 dB 26 36