SATELLINE-M3-TR3,
–
TR4 and -R4
Integration Guide, Version 3.4
31
9
RF interface
The antenna interface is a 50
Ω
coaxial connector. Matching networks are not included on the
module and should be placed in the host application if the antenna is not 50
Ω
. The HIROSE U.FL
compatible connector is located on the TOP side of the board.
NOTE! The used connector has gold plated contacts - whereas a standard HIROSE U.FL has silver
plated contacts.
If silver - gold joints are not allowed in your product, use gold plated cable-connector to mate to
this device.
9.1
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 such that it still ensures error free connection under variable conditions.
Excessively high output power levels used in short link spans can cause interferences and affect
to the overall operation of the system.
Transmitter output power levels
Output power (mW) Output power (dBm)
403-473 MHz
100 mW
+20 dBm
✓
200 mW
+23 dBm
✓
500 mW
+27 dBm
✓
1000 mW
+30 dBm
✓
The antenna (or a 50 Ohm attenuator) should be always connected to the antenna connector
while the transmitter is being used in order to guarantee the maximum lifetime of the
transmitter.
NOTE!
Setting the transmitter output power to such a level that exceeds the regulations set forth by
local authorities is strictly forbidden. The setting and/or using of non-approved power levels
may lead to prosecution. SATEL 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.