User guide

SATELLINE-3AS NMS / NMS Epic / NMS 869 / VHF
User Guide, Version 1.0
38
6.1
Transmitter
The output power of the transmitter is adjustable (see the table below for available values). The
greatest allowable power depends on limits set by local authorities, which should not be
exceeded under any circumstances. The output power of the transmitter should be set to the
smallest possible level that still ensures error free connection under variable conditions. High
output power levels used in short link spans can, in the worst case, cause interferences and
affect to the overall operation of the system.
Table 6.1. The transmitter output power levels of the SATELLINE-3AS(d)
NMS family radio modems.
OUTPUT POWER dBm 3AS NMS NMS 869 NMS Epic VHF
10 mW +10
• •
20 mW +13
• •
50 mW +17
• •
100 mW +20
• • •
200 mW +23
• •
500 mW +27
• • •
1 W +30
• • •
2 W +33
•
5 W +37
• •
10 W +40
•
NOTE!
Additional cooling is required in case the transmitter of SATELLINE-3AS(d) NMS Epic radio
modem has over 20 % duty cycle at the full power (or the constant transmitter on-time
exceeds 2 minutes at the full power). The product variant SATELLINE-3AS(d) NMS Epic C
includes the necessary cooling element.
NOTE!
Setting the radio data modem output power level to exceed the regulations set forth by local
authorities is strictly forbidden. The setting and/or using of non-approved power level may
lead to prosecution. SATEL Oy and its distributors are not responsible for any illegal use of
its radio equipment, and are not responsible in any way of any claims or penalties arising
from the operation of its radio equipment in ways contradictory to local regulations and/or
requirements and/or laws.
NOTE!
Additional cooling is required in case the output power of SATELLINE-3AS(d) VHF radio
modem is 5 W. The product variant SATELLINE-3AS(d) VHF C includes the necessary cooling
element.