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Rx And Tx Frequencies - GE MDS SD Series Reference Manual

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MDS 05-4846A01, Rev. C
is
, but it may be set to any of the selections shown in
Modem 9600
Table 12. The table also lists modem sensitivity ratings for the various
modems. Note that some modem choices are limited based on the model
purchased.
Table 12. Modem Selection vs. Speed, Bandwidth & Sensitivity
Modem Type
OTA Speed
Selection
(bps)
9600
1
Modem 9600
1, 2
4800
Modem 4800
1
3200
Modem 3200
1, 2
9600
Modem 9600M
Modem 4800F
4800
1
9600
Modem 9600B
1
4800
Modem 4800B
1
1200
Modem BELL
Modem V23
1200
Modem 19200N
19200
2
19200
Modem 19200E
Modem 9600N
9600
Modem 19200
19200
1) For MDS x710-compatible operation.
2) For ETSI compliance.
To change the modem type setting, proceed as follows:
1. Select
Modem Type
through the available choices.
2. When the desired selection is displayed, press the
apply the change.
NOTE: Some modem options may not be available depending on
configuration and agency compliance restrictions.

RX and TX Frequencies

The receive (RX) and transmit (TX) frequencies may be viewed or set
on the Basic Settings submenu (Figure 35). If no frequencies have been
entered, the fields will be blank and the radio's
cating that an entry is needed. Frequencies must be entered for the radio
to operate. Consult your station license to determine the authorized fre-
quencies for your system. If changes are needed, proceed as follows:
SD Series Ref. Manual (Packet & Transparent Mode)
B/W (kHz)
12.5
12.5
5.0
12.5
6.25
12.5
12.5
12.5
12.5
12.5
12.5
6.25
25.0
in the menu and press the spacebar to cycle
Sensitivity
Sensitivity
(SD2)
(SD4)
-112 dBm
-112 dBm
-112 dBm
-112 dBm
-108 dBm
N/A
-106 dBm
-106 dBm
-108 dBm
-108 dBm
-106 dBm
-106 dBm
-110 dBm
-110 dBm
-110 dBm
-110 dBm
-110 dBm
-110 dBm
-100 dBm
-100 dBm
-96 dBm
-96 dBm
-98 dBm
-98 dBm
-105 dBm
-105 dBm
key to
ENTER
led will flash, indi-
PWR
43
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