MTS 2 and MTS 4 Installation, Con
fi
guration and Basic Service Manual
RF Speci
fi
cations
Table 14-4
RF Specifications (Continued)
RF Specifications
Description
Value or Range
Bandwidth:
UHF: 5 MHz
800 MHz: 19 MHz
Channel spacing TETRA:
Channel spacing TEDS:
25 kHz (Raster in 6.25 kHz)
25/50 kHz (Raster in 6.25 kHz)
Maximum:
•
10 W (TEDS High Power, one TX ant., 2 BRs, 2 Duplexers)
•
20 W (TEDS High Power, two TX ant., 2 BRs, with fans, 2 Duplexers)
•
25 W (TETRA Low Power, two TX ant., 2 BRs, 2 Duplexers)
•
40 W (TETRA High Power, two TX ant., 2 BRs, with fans, 2 Duplexers)
Cavity Combiner and channel spacing less than 250 kHz gives
maximum output power between 20 W and 25 W.
Transmit Power
Adjustable down with 12 dB
ETSI Compliance Notice: The Base Radio is only ETSI-compliant when used in
conjunction with a Motorola-supplied RF distribution system (RFDS). The Base Radio
shall not be used without a Motorola-approved RFDS.
Table 14-5
Auto Tune and Manual Tune Cavity Combining Transmitter-to-Antenna Port
Specifications
Specifications
Value or Range
Cavity Combiner Maximum Insertion Loss: 3.9 dB maximum
(@ 150 kHz Channel Spacing, four-channel) 3.5 dB typical
The cavities are factory set for 150 kHz spacing.
Cavities are not tuned to customer frequency and
may be
fi
eld tuned. Cavity combiner insertion
loss is combiner only.
Duplex Filter Insertion Loss
1.6 dB maximum
1.2 dB typical
Total RFDS Insertion Loss
4.5 - 5.2 dB
6802800U74-N September 2009
14-5
Содержание DIMETRA MTS 2
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