FT630-2 DC Control Unit | Extended Communication for Radio Systems

The FT630-2 DC Control Unit is a professional communication interface designed to extend the connection between control panels and radio systems over long distances using a two-wire communication method. It enables the transmission of audio signals, push-to-talk (PTT) control, and squelch detection, ensuring reliable communication in radio dispatch and public safety environments.

Key Features:

• Two-Wire Communication – Enables reliable transmission of audio signals and control commands over a single pair of wires.
• Integrated DC Control – Provides remote activation of the transmitter via a DC signal.
• Galvanic Isolation – All audio inputs and outputs are transformer-isolated to prevent ground loops.
• Adjustable Audio Levels – Fine-tune transmission levels using built-in potentiometers.
• Squelch Detection – Recognizes carrier signals from the radio and transmits the squelch status.
• Compact & Durable Design – Housed in a rugged plastic enclosure for long-term operation.
• Compatible with Major BOS Control Panels – Designed for seamless integration with existing radio systems.

Connection & Setup:

Two-Wire Communication & Connectivity

The FT630-2 is designed to bridge long distances between a control panel and a radio system using a DC-capable two-wire line.

• ST1 Connector (Line) – Connects the two-wire line.
• ST2 Connector (Radio) – Connects the unit to the radio, transmitting audio and control signals.

NF Signal Adjustment

To optimize audio quality, two potentiometers are provided:

• Poti P1: Adjusts audio signal from radio to two-wire connection.
• Poti P2: Adjusts incoming signal from the two-wire connection to the radio.

PTT & Squelch Detection

The FT630-2 supports push-to-talk activation and squelch monitoring:

• PTT is triggered by applying a DC voltage greater than 4.5V to the two-wire line.
• Squelch detection is handled via Pin 3 on ST2, and a relay ensures proper triggering.

Block Diagram & Use Cases:

The FT630-2 allows for multiple configurations depending on the application:

• 🔹 Standard Remote Operation – Connects a control panel to a distant radio using a two-wire connection.
• 🔹 Parallel Control Panels – Multiple FT630-2 units can be used to connect several control panels to a single radio.
• 🔹 Carrier Signal Transmission – Ensures squelch status is properly transmitted for remote monitoring.

Why Choose the FT630-2 DC Control Unit?

• Extends radio communication range using a two-wire connection.
• Reliable carrier signal detection and push-to-talk activation.
• Simple and flexible installation with adjustable audio levels.
• Ideal for mission-critical communication in public safety and industrial applications.

Applications:

• 🔹 Public Safety & Emergency Services – Enables remote control of radios in dispatch centers.
• 🔹 Industrial & Utility Operations – Reliable radio communication in large industrial sites.
• 🔹 Transportation & Logistics – Seamless integration with railway, airport, and maritime communication systems.