Clear-Com TW47 2-Way Radio and Walkie-Talkie Interface

The TW-47 two-way radio interface is a stand-alone system that enables Clear-Com Encore systems to connect with external audio sources. Designed to connect a 2-way radio or walkie-talkie into a single channel of a standard Clear-Com, RTS*, or compatible 2-wire party-line intercom system, the TW-47 provides both audio connection and “push-to-talk” transmitter keying, using standard Call signals.

The ability of a 1- to 5- watt walkie-talkie to both talk to and receive from the wired intercom system can greatly extend an intercom system’s capability, especially in very large indoor and outdoor facilities and venues. The TW-47 is powered directly from the intercom line, and connection to the radio is via a single DB-9F 9-pin connector. The interface has extensive RF and EMI isolation to prevent the 2-way radio RF from radiating into the intercom system.

In order to accommodate the widest variety of 2-way radios, the TW-47 is supplied with a 9-pin connector and wiring diagrams for many 2-way radios.

NOTE: * For RTS systems equipped with the Call Light feature.

Applications

• Special event production and coordination
• Outdoor events
• Theatrical rehearsals
• Touring shows where all usable, licensed radio frequencies are already allocated
• House manager communications and tech rehearsals
• Wherever increased mobility and greater reach are required from the intercom system

Features

• Interfaces any 2-way radio to a Clear-Com, RTS, or compatible system
• Accepts any walkie-talkie
• Powered by the intercom line
• Easy to interconnect
• Individual transmit and receive level controls
• Bi-color LED audio level indicator
• Small footprint - will fit anywhere

Specifications

• Radio to Party Line
  • Frequency Response: 200-20KHz ± 3dB
  • Max Gain: >=-5dBu
  • Distortion: < = 0.3%
  • Noise: < = -70dBu
  • Max Level Before Clipping: >=+17dBu
  • Green LED Threshold: -22dBu ± 3dB
  • Red LED Threshold: -16dBu ± 3dB
  • Input Impedance: 400 ohms ± 100 ohms
• Party Line to Radio
  • Frequency Response: 200-8KHz ± 3dB
  • Max Gain J7 ON, J8 ON: -12dBu ± 3dB
  • Max Gain J7 OFF, J8 ON: +2dBu ± 3dB
  • Max Gain J7 OFF, J8 OFF: +27dBu ± 3dB
  • Distortion: < =0.3%
  • Noise: < =-50dBu
  • Max Level Before Clipping: >=0dBu

  Technical Specifications

  • Power Requirements
    • Input Voltage Range: 20-30VDC
    • Quiescent Current: < =40mA
    • Current with Audio: < =50mA
    • Current with Call: < =60mA
  • Rear Panel Connectors
    • (1) XLR3F
    • (1) DB-9F
  • Front Panel Controls and Indicators
    • Transmit: (1) Red LED
    • AudioLevel Hi: (1) Red LED
    • Audio Level Norm: (1) Green LED
    • Receive LevelAdjust: (1) Control
    • Transmit Level Adjust: (1) Control
  • Dimensions (H x W x D): 1.8" x 3.95" x 6.4"
  • Weight: 1 lb 4 oz