Sercel Inc LRU ユーザーズマニュアル
Typical setups
1-4
March 2002
Radio relay in series connection
To extend the relay range, you can use two relay cells in series
connection as shown below. You can choose between two types of
series setups, one with fewer antenna masts to raise, the other
optimizing the data rate.
connection as shown below. You can choose between two types of
series setups, one with fewer antenna masts to raise, the other
optimizing the data rate.
• Two-mast series setup (high data rate)
Typical performance of each relay cell (Ground-Wave propagation
above flat terrain):
- Range: 24 km, 60 Ch @ 2 ms, Real time.
- Range: 10 km, 240 Ch @ 2 ms, Real time.
Setups with more than two relay cells in series connection have not been
tested yet.
tested yet.
See CAUTION on
LRU
12 V
Unit
Transverse
to Central
to Central
Line or
LRU
12 V
1
See
below
Battery
LRU
12 V
LRU
12 V
1
See
below
Requirements:
- At least 300 m between antennas,
- At least 13 MHz frequency separation.
- At least 300 m between antennas,
- At least 13 MHz frequency separation.
Transverse ports
Line or
For optimal
performance,
performance,
use vertical polar-
ization in one cell
and horizontal in
the other.
ization in one cell
and horizontal in
the other.
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