Teldat Regesta Smart PLC Installation Manual page 26

Teldat S.A.
Installing these antennas in the Regesta Smart PLC router is necessary to improve the quality of the signal received
and transmitted by the WWAN module.
Some cellular technologies use the antenna diversity technique to improve the quality of the signal received(HSUPA,
LTE, etc.). Because of this, the Regesta Smart PLC incorporates two WWAN/RF connectors. Regardless of the con-
figuration, the antenna on RF1 must be always installed while installing the one on RF2 is optional.
WWAN Antenna Connectors
Fig. 19:
When the RF1 and RF2 antennas are not directly connected to the router but installed through extension cords, the
minimum distance between them must be 7 cm. The maximum recommended distance between the two antennas is
25 cm. In order to comply with EMC regulations, the extension cable must not be longer than 3 m.
To achieve an optimum performance, the radio frequency accessories installed (antennas and cables) should be
those recommended by Teldat.
Teldat offers a series of accessories (90º mount antennas, antennas for outdoor installation, antennas for ceiling in-
stallation, extension cables, etc.) that allow you to install the devices in different locations.
4.2.4.1 Placing the Antenna
Antenna orientation, its location with respect to other wireless devices and radiation devices, such as communication
devices, personal computers, etc., can significantly influence device performance.
Antennas transmit and receive radio signals. Performance is also affected by environmental factors such as distance
between the device and the base station, physical obstacles and other interferences due to radio frequencies (RF).
For optimum coverage, carry out the following instructions:
• Whenever possible, place the antenna where there are no physical obstacles. Obstacles between the antenna and
the base station degrade the wireless signal. Place the antenna above ground level facing the nearest base sta-
tion.
• Density of materials also affects antennas. Place them away from any type of wall, metal screens, mirrors, etc.
• Do not place the antenna near columns, which may throw shadows and reduce the coverage area.
• Keep the antenna away from metal pipes such as canals, air-conditioning, etc.
• Please bear in mind that other wireless devices such as telephones, microwaves, etc., can temporarily interfere
with the quality of the radio signal.
• We do not recommend installing antennas near, or between, racks containing communication devices, computers,
etc. Use an extension cable and place the device outside.
The following recommendations are applicable to all wireless devices:
Regesta Smart PLC
4 Connecting the router
21