SVS 00069.00 Mode D'emploi page 2

Multiflex antenna with BNC-Connector
Please read carefully!
These operating instructions form an integral part of this product and contain important information on how to commission, install and
operate it. They must be taken into consideration and given to the end user or other third party when the installer hands over the
product. These operating instructions must be retained for future reference.
Damage resulting from abuse or misuse is not covered by warranty. The manufacturer accepts no warranty for consequential losses
that may result directly or indirectly from use of this equipment. Any changes or modifications not expressly approved by the party
responsible for compliance could void the user´s authority to operate the equipment.
1 Mode of Operation
This high-quality, extremely flexible antenna increases the communication range when the radio module can be installed only in
places where the signal is not sufficiently strong. An elastic steel rod within an especially rugged plastic cover allows for the antenna
to always re-erect itself from any position.
The antenna is not suited for exterior installation. However, you can protect the BNC connection against moisture or electrostatic
discharges with a shrinking sleeve or another similar solution.
2 System operating range
The system SH-12 is designed for a large operating range of many hundred meters. Walls including steel reinforced concrete can be
penetrated. The maximum range can be achieved under optimum conditions and by line-of-sight contact between transmitter and
receiver without disruption by external high frequency disturbances.
The following are possible causes that could reduce range of operation:
Obstructing buildings, vegetation or other factors will substantially reduce the operating range.

The distance between the antenna and the operator's body or other conducting objects (e.g. Earth) may influence the working

range.
Background "electrical noise" could be relatively high so that the signal-to-noise-ratio may decease and therewith the operating

range. Also other devices, with similar operating frequency, operated in the neighbourhood of the receiver may reduce the
sensitivity.
Operating the receiver adjacent to badly shielded electronic components (e.g. PC's) that can produce electromagnetic distortion,

may severely reduce the range of operation and could result in intermittent operation.
3 Installation
The antenna can be connected directly to 50 Ω BNC-socket.
The connection from the radio module to the antenna can also be performed with a 50-Ω coaxial cable (e.g. RG 58 or RG 174) and the
corresponding BNC connector. To get the best radio connection make sure the antenna is pointing upward vertically after installation. At
the same time, provide as counterweight a conductive, horizontal, and preferably large surface and connect it with the shield (GND-
ANT) (Figure). Make sure that the antenna is installed as far as possible from the ground. If no large metallic surface or similar is
available, a smaller plate of 1 or 2 dm² can also provide a helpful solution.
4 Technical Details
Connector jack:
Frequency:
Impedance:
Polarization:
Electrical length:
Length incl. BNC connector:
Weight:
BNC (male)
400 to 470 MHz
50 Ohm
vertical
¼ Lambda
175 mm
35 g
Operating Instructions (D – GB – F)