Clear-com TW-47 2-Way Radio Interface
Clear-com TW-47 is a stand-alone interface 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.
It 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.
• 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
• Radio to Partyline
Line Characteristics
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: 400O ± 100O
• Partyline to Radio
Line Characteristics
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
• Power Requirements
Input Voltage Range: 20-30V DC
Quiescent Current: <=40mA
Current with Audio: <=50mA
Current with Call: <=60mA
• Dimensions
1.8 x 3.95 x 6.4in (HxWxD)
(46 mm x 100 mm x 163mm)
• Weight
1.3lbs
(0.6kg)
