Two Way Radio Base Stations and Repeaters
A radio repeater is a combination of a radio receiver and a radio transmitter that receives a weak or low-level signal and retransmits it at a higher level or higher power. The result: two-way radio signals can cover longer distances without degradation. Repeaters are usually located on a mountain top, tall building, or radio tower. This allows communication between two or more bases, mobile or portable stations that are unable to communicate directly with each other due to distance or obstructions between them.
The repeater is synonymous with the base station, which performs both functions in most emergency dispatching systems.
The repeater receives on one radio frequency (the “input” frequency), demodulates the signal, and simultaneously re-transmits the information on its “output” frequency. All stations using the repeater transmit on the repeater’s input frequency and receive on its output frequency.
Because the transmitter and receiver are on at the same time, isolation must exist to keep the repeater’s own transmitter from degrading the repeater receiver. If the repeater transmitter and receiver are not isolated well, the repeater’s own transmitter desensitizes the repeater receiver. This is like not being able to hear a friend at lunch because someone just turned up the volume on the kitchen radio.
Motorola’s SLR 8000 Repeater
The MOTOTRBO SLR 8000 Repeater delivers high performance, high reliability two-way radio service, optimized for your workplace. With its small outline and high reliability, it’s engineered for low cost of ownership.
The SLR 8000 represents a huge leap forward in design and technology. Based on a wealth of field experience, customer feedback and technological innovation, the product delivers outstanding performance and reliability for your business two-way radio system.
The SLR 8000 offers round-the-clock reliable operation, even at its continuous full transmit power of 100W. The design has been validated through Motorola’s Accelerated Life Testing (ALT) program, and meets stringent quality criteria. The repeater has high sensitivity and improved noise blocking, so you can be confident of clear voice quality, even in the worst conditions.
With its 100W transmitter output the SLR 8000 delivers radio coverage to an enormous area. The device only requires 2U of rack space, and has very low power consumption. The SLR 8000 supports the full MOTOTRBO feature set. The IP interface allows you to build applications and consoles directly on your system.
The SLR 8000 repeater/base station can be customized to suit your operation. There are options for an internal preselector amplifier and antenna relay module. You can also opt for an internal wireline card if you need tone control capabilities, four-wire audio and additional external inputs.
Related Products for the SLR 800 are: MotoTRBO Capacity Max; MotoTRBO IP Site Connect; MotoTRBO Connect Plus; MotoTRBO Capacity Plus.
The conclusion: whether you need the simplicity of a single site conventional system or the powerful trunking capabilities of Capacity Plus, Capacity Max or Connect Plus, the SLR 8000 delivers the power of digital two-way radio to your workforce.
Read Motorola’s SLR 8000 data sheet here.