6802800U74-AN
Chapter 14: Technical Specifications
Specifications Value or Range
250 kHz Channel Spacing, four-channel 4.7 dB typical
250 kHz Channel Spacing, two-channel 4.5 dB typical
Table 121: Hybrid Combining Transmitter-to-Antenna Port Specifications
Specifications Value or Range
Hybrid Combiner Maximum Insertion
Loss:
3.3 dB maximum
3.2 dB typical
Duplex Filter Insertion Loss 1.6 dB maximum
1.2 dB typical
Total Hybrid Combiner Insertion Loss 4.9 dB maximum
4.4 dB typical
Input Return Loss 14 dB minimum
>20 dB typical
Antenna-to-PA Isolation 20 dB minimum
14.3.4
Transmitter Specifications
The following tables list the TETRA and TEDS specifications.
NOTICE: All specifications listed in the following two tables are observed at RF distribution
system output unless stated otherwise.
Table 122: Transmit Specifications – TETRA
Transmitter Specification Value or Range
Pi/4DQPSK Transmitted Power (10, 25,
40 Watts depending on the configura-
tion) measured at RFDS antenna port:
10 W, 25 W, 40 W
Normal Conditions: +2.0 dB
Extreme Conditions: +3.0/-4.0 dB
Transmitter Power (off/standby) -36 dBm/-40 dBc
Frequency Stability ± 0.007 ppm
NOTICE: Stability with site reference con-
nected to station and locked to GPS.
Base Radio Power Limits High Power BR: 5W - 80 W
Low Power BR: 2W - 36W
NOTICE: Base Radio Power Limits above
are also applicable for 800 MHz.
260 MHz Low Power BR: 2W - 40 W
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