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SR-328 Duplex Repeater Controller

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US$75.80
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Product Overview

Radio Range Extender, The SR-328 is a multi-function and cheaper device that connects any handheld or mobile radio. By equipment and so on, our assembled build, the new generation trunk-line board, the internal structure design are finer, the outward appearance is more attractive. Besides, it can provide the basic repeater function which has the following receiver transmitter, furthermore, it has simple connection, providing a more ideal 2-way radio conversation region for you, allowing you to maintain communication in a larger operating region.

This is a radio duplex repeater controller. It is easy to operate and is a cost-effective and highly flexible platform for setting up bidirectional band duplex repeater with mobile radio and handheld radio.

The SR-328 has 2 audio ports (input and output), used to connect with mobile and handheld radios. DTMF remote control function with password protection is available. Users can control the repeater ON or OFF remotely by DTMF. Multi-LED display of 2 radio statuses, and built-in battery level.

Feature & Specification

- Works with most popular handheld radios
- Multi-LED display of 2 radio statuses, and controller battery level
- Real-time duplex repeater with link radio
- Allows users to change the DTMF remote control password by radio
- Operates on both built-in Li-ion battery (72 hours long life operation)
- External DC 5~24V power supply
- DTMF remote control repeater function (ON and OFF) with password protection
- Professional manufacturer, low power consumption

SR-328 Duplex Repeater Controller 409 shop

SR-328 Duplex Repeater Controller 409 shop

SR-328 Duplex Repeater Controller

SR-328 Duplex Repeater Controller

Example 1. Without duplexer and filter
No duplexer: Two handheld units connected to a relay station; as for unparalleled workers, two handsets should be separately using two antennas! Two antennas should be perpendicular and erected! Try to maximize the distance between the two. At least no less than 1-5 meters (suggest: the farther the better). Two antennas.
Radio relay stations in different frequency duplex mode; that is, after receiving a weak signal of a specific frequency emitted from afar, immediately after synchronization, it amplifies and transmits the signal power using another frequency. Those who have set up a relay station are aware, if no duplexers are used, the height and distance between the two receiving antennas erected do not meet the technical requirements; the relay station either does not work due to self-excited operation, or is "calling far." This is because when the relay station forwards the signal power, it would "drown" the adjacent repeater receiver front-end with a strong signal.

Example 2. With duplexer
Purchase the corresponding frequency/power duplexer. Use the "joint" of the two handsets connected to the antenna output terminal of the duplexer transmitter and receiver, respectively, set the frequency corresponding to the handheld units (frequency should be consistent with the duplexer). With a duplexer, the relay station only needs to connect one antenna! And no special attention is required when erecting the antenna.

Package Contents

1 x SR328 Duplex Repeater Controller
1 x 100-240V USB power supply unit
1 x USB Power Cord
2 x Motorola/FDC/CHINA Radio connect cable

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