Description:

The RFM underground radio system is designed to enable VHF radio frequencies to be transmitted and received in underground roadways and tunnels up to 25 km in length.  The age-old problem of strata absorption has been overcome by using a radiating cable with 2 way repeater amplifiers at 500 metre intervals.

The system comprises a Base Station, Radiating Cable (Leaky Feeder), in line Repeater amplifiers, Passive Splitters, Terminators and mobile radio transceivers.

Various interconnect facilities are offered to enable integration to other radio systems and other types of communication systems.

With the RFM system, GAI-Tronics has taken the opportunity of using standard off the shelf pocket phones for intrinsically safe and non-intrinsically safe applications.  A rugged, robust loud speaking transceiver, Transcom, is offered for mounting on mobile vehicles such as locomotives, free steered vehicles or rope driven haulages.

The Repeaters are powered from the base station and additional power is only needed for complex long distance systems.

Interface circuitry is offered to allow radio telephones to be used and connection to other types of communication systems for loud speaking Public Address.

Applications:
Underground radio system for mines and tunnels

Approvals:
Complies with EN50 014/020
MSHA Approval No. 9B-201

Order Code:
Please contact us for order info

Note:
Outside of Europe new units can be purchased. Within Europe, this item is only available for spares and repairs.

For further technical specifications, please download product information sheet

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