Service Manual

6802800U74-AN
Chapter 3: Site Preparation
74
The DC power system has normal loads and start-up loads. These loads are dependent on the number
of Base Radios in the site and the size and condition of the backup battery system. The loads may
differ for the customer designed power systems.
3.7.2.1.1
Power Loads and Heat Dissipation – MTS 400 MHz and 800 MHz
Table 10: Typical Power Loads and Heat Dissipation Values – MTS 400 MHz BR-Arch-1
Configurations
Heat
AC
When
Charg
Heat AC
When
DC
-48
Heat
MTS 400 MHz
AC
AC
ing
Charg-
V
DC
Configuration
(W)
(W)
(W)
ing (W)
(W)
(W)
Comment
TETRA TX 10 W
MTS2 with 1 BR
140
130
520
185
135
125
No combining,
low power PA,
no fans
MTS2 with 1 BR
w. Hybrid
165
155
545
210
160
150
Low power PA,
no fans
MTS2 with 2 BRs
245
225
625
280
240
220
Two TX ant.,
low power PA,
no fans
MTS2 with 2 BRs
w. Hybrid
295
275
675
330
285
265
Low power PA,
no fans
MTS4 with 1 BR
w. MTCC/ATCC
240
230
625
290
235
225
Low power PA,
fans
MTS4 with 2 BRs
w. MTCC/ATCC
375
355
755
410
365
345
Low power PA,
fans
MTS4 with 3 BRs
w. MTCC/ATCC
620
590
1380
705
605
575
Low power PA,
fans
MTS4 with 4 BRs
w. MTCC/ATCC
760
720
2005
835
745
705
Low power PA,
fans
TETRA TX 25 W / 40 W and TEDS TX 10 W
MTS LiTE and
MTS2 with 1 BR
230
205
610
280
225
200
No combining,
low power PA
(25W)
MTS LiTE and
MTS2 with 1 BR
370
345
750
420
365
340
No combining,
high power PA
(40W)
MTS2 with 1 BR
w. Hybrid
230
205
610
280
225
200
Low power PA
(10W)
MTS2 with 1 BR
w. Hybrid
370
345
750
420
365
340
High power PA,
fans (25W)
MTS2 with 2 BRs
430
380
810
470
420
370
Two TX ant.,
low power PA
(25W)