However, the reflected waves will suffer a loss in power once they travel over a certain
distance, this means that they combine with the direct radio waves and interact in either
weakening or strenghtening the signal respectively. In reality attenuation can even occur at
40 dB which is very sharp and the effect on the 450 MHz frequency is about 35 cm
difference.
Please note that the RSSI tolerance is + 10 dB when using the RSSI signal of the modem to
define the field strenght. See appendices
5
Installation
The radio modem is to be installed with the installation accessories supplied with the radio
modem
3. By mounting the radio
modem directly on the custo-
mer´s equipment .
2. By using the velcro-type
tape supplied with the radio
modem.
1. By using the installation plate,
that should be fastened on the
back side of the radio modem.
The installation plate can be
mounted using the holes provi-
ded on installation plate .
NOTE ! When choosing the place of mounting, please check that water can not get
inside the radio modem. It is not recommendable to mount the radio modem on a
powerfully vibrating foundation. The attachment should be lessened with help of a
resilient material.
The radio modem fulfils the technical specifications regarding temperature range
-25 °C...+55 °C. The radio modem operates also outside this temperature range but does
not necessarily fulfil all specified requirements.
SATELLINE-1AS and SATELLINE-2AS
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