Antennas

SIAMtec has developed an omni-directional antenna for the underground mining applications. It is designed to operate within the large frequency bands used in data communication systems and can resist the harsh environment of a typical underground mine.

To ensure the best possible coverage, the SIAMnet antenna is positioned vertically, the same way as the portable radio or the vehicular data modem antennas.

The Stainless Steel ground plane makes this antenna very effective. 

The antenna is attached to the “Back” and is lowered under metallic air conduits or other metallic interferences.  This way, the coverage is at its optimum level.

Depending on the drift size and the type of mineral, a communication can be established at more than one (1) Km from the antenna.

The omni-directional antenna is available with either a 50 or 75 ohm interface cable.

Directional antennas (yagi) are also used to project the RF signal deeper  into a long tunnel such as a loading drive or access drift.

For example, the central computer can stay in constant communication with the vehicle' computer even when he is located far into the drift.

This functionality is also available to meet the voice communication needs.

The requirements for radio communication coverage may change as the mine develops new drifts. Consequently, adding or moving radio coverage may be a complicated tak for the mine operators.

SIAMtec has introduced the Tap antenna in order to solve this problem quickly and cost effectively. Simply screw the Tap block onto the DAS cable at the location where additional RF coverage is desired and attach the needed antenna to the Tap block.

The Tap antenna does not disturb the balance of the network and provides adequate local radio coverage for voice or data communication.