Telex RadioCom TR-300 Bedienungsanleitung

Telex

Operating Instructions

PROFESSIONAL

WIRELESS

INTERCOM SYSTEM

TR-300, BTR-300

Ext Intercom Aux Audio 1

Portable Station Connect

BTR-300

Talk

Headset Controls

Volume

Power

Headset

Portable Transmit On

Gain O/M

Push Twice to Latch

RadioComä

TR-300

TABLE OF CONTENTS

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

BTR-300 BASE STATION TRANSCEIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CONTROLS AND CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

TR-300 BELT-PACK TRANSCEIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

CONTROLS AND CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

EQUIPMENT SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

BTR-300 SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

ANTENNA INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

TR-300 SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

PRE-WALK-THRU CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

BTR-300 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

TR-300 OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

ENABLING AUDIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SETTING SYSTEM GAIN LEVELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SYSTEM WALK-THRU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

BATTERY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

CUSTOMER SERVICE INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

FCC INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

-i-

INTRODUCTION

GENERAL DESCRIPTION

This manual covers the BTR-300 Base Station

and the TR-300 Portable Transceiver.

The RadioCom Models BTR-300 and TR-300

were specifically designed to provide the user

with a highly flexible wireless two-way com-

munication system with the capability to inter-

face with a wired intercom system and other

auxiliary audio.

At the BTR-300 operator’s command, the

remotes may communicate with each other,

with a wired intercom system or with an auxil-

iary system. The BTR-300 Base Station with

its one transmit and four receive channels is

designed to operate in full duplex (simulta-

neous two-way communications) with up to

four TR-300 Belt Pack transceivers. See block

diagram in Figure 1.

Figure 1

Block Diagram of System

-1-

WIRED

INTERCOM

RECEIVER

REC

TRANSMITTER

EARPHONE

MICROPHONE

HEADSET

AUXILIARY

OUTPUT

AUXILIARY

INPUT

MICROPHONE

EARPHONE

HEADSET

RECEIVER

TRANSMITTER

TR-300

ANT

RF CARRIER

SIGNAL

ANT

RF CARRIER

SIGNAL

R CARRIER

SIGNAL

BTR- 300

The system operates on selected frequencies

within the 150-216 MHz band.

The BTR-300 system is fully compatible with

a number of other wired intercom manufactur-

ers units. See the BTR-300 Setup Section for

additional information.

The TR-300 Transceiver operates in the con-

tinuous transmit mode with the audio acti-

vated by a switch. As many as four TR-300

belt-pack transceivers can operate in a fully

duplex network with one RadioCom Model

BTR-300 Base Station.

-2-

BTR-300 BASE STATION TRANSCEIVER

TECHNICAL INFORMATION

-3-

SPECIFICATIONS BTR-300

Input Power (minimum) ....................................................................................12V AC/DC at 360 mA

Intercom Output ........330 mV (Low) or 1 V (Hi) RMS into 300 ohm load typical (at rated deviation)

Intercom Input (Gain Minimum) .........................................300 mV RMS typical (for rated deviation)

Auxiliary Output.............................................2 V RMS into 600 ohm load typical (at rated deviation)

Auxiliary Input (Gain Maximum) .........................................60 mV RMS typical (for rated deviation)

Local Headset Input.......................................................................................2 mV RMS input nominal

1.5 mV RMS input at compression (Dynamic)

Local Headset Output .............................................................32 mV maximum output into 600 ohmst

Speaker/Local Monitor Output (into 8 Ohms) ............................................2 Watts (at rated deviation)

Temperature Range ................................................................................-4°F to 130°F (-20°C to 55°C)

Dimensions.............................................................................................15.75” W x 1.75” H x 10.5” D

(40 cm x 4.5 cm x 26 cm)

Weight................................................................................................................................4.5 lbs (2 kg)

Transmit

RF Frequency Range ........................................................................................................150-216 MHz

RF Frequency Stability................................................................................Crystal Controlled, 0.005%

RF Power Output............................................................................................................50 mW Typical

Modulation...........................................................................................................FM, 3 KHz deviation.

115 micro-seconds Pre-emphasis

Transmit Antenna....................................................................................................5/8-wave (supplied)

SO239 connector on chassis

Modulation Limiter ................................................................................................Internal Compressor

Modulation Frequency Range ............................................................................300 to 5000 Hz ±2 dB

Radiated Harmonics and Spurious Emissions ..........................................................................-45 dBC,

Exceeds FCC Specifications

FCC ............................................................................................Type Accepted Under Parts 90 and 74

FEATURES

The RadioCom Model BTR-300 is a Base

Station with one transmitter and four re-

ceivers. It is designed for portable two way

communication with the capability for inter-

face to other audio systems. Features include:

·An extremely flexible unit that has the capa-

bility to communicate at one time with up to

four portable stations and wired stations (in-

tercom and/or other audio source).

·Powered by an external AC supply via the

power jack on the rear of the unit. It can

also be powered by any 12V AC/DC 700

mA source.

·Intercom connections with the ability to in-

terface with most wired intercom systems.

·RF light indicator for each portable station.

·All metal case for superior shielding.

·Table or rack mountable.

-4-

SPECIFICATIONS BTR-300 (Cont.)

Receive

RF Frequency Range .......................................................................................................150-216 MHz

RF Frequency Stability................................................................................Crystal Controlled, 0.005%

Type ...........................................................................................Dual conversion superheterodyne, FM

RF Sensitivity ................................................................................Less than 0.6 µV for 12 dB SINAD

IF Selectivity ........................................................................3 dB at 30 kHz (4 pole Monolythic Filter)

Image Rejection ..............................................................................................................65 dB or better

Squelch Quieting ...........................................................................................................................90 dB

Squelch Threshold........................................................................................................1.0 µV (Internal)

Signal-to-Noise Ratio ....................................................................................................................90 dB

Receive Antenna .....................................................................................................5/8-wave (supplied)

SO239 connector on chassis

Distortion.................................................................................................Less than 1% at Rated Output

CONTROLS and CONNECTIONS

FRONT PANEL (Refer to Figure 3)

Power ON/OFF Switch: Push this switch

once to turn power ON; push it again to turn

the power OFF.

Power ON Indicator: The Power ON light is

illuminated when the Power ON/OFF Switch

is pushed in the ON Position.

Local Headset Connector: Four pin XLR

Connector for Input/Output (plug for Telex

units and jack for RTS units). The headset

jack will accept many Telex model headsets.

Compatible with other intercom headsets with

four pin XLR connectors that are wired as

shown in Figure 2.

Figure 2

Headset XLR Connector Wiring

Local Headset Volume: Adjusts volume to

Local Headset. DOES NOT AFFECT MI-

CROPHONE GAIN.

Mic On-Push-to-Talk/Lock-to-Talk Switch:

Enables the local headset microphone audio

function.

NOTE: DOES NOT control base station RF

transmit.

Local Push-to-Talk Indicator: Will be illu-

minated whenever the talk function is on.

Local Microphone Gain Control and

Overmodulation Indicator: A screwdriver

adjustable control is provided to control the

input level of the local headset mic. This input

is protected from overloads by means of a

gain compressor whose operation is signaled

by the gain light indicator.

Portable Enable Switches and Indicators:

When in the “IN” position, the Enable

switches allow the user of the corresponding

portable unit to be heard by others connected

to the system. When in the “OUT” position,

the respective portable will be muted, but this

portable will still be able to hear all other se-

lected remotes and interfaces. The indicators

(Portable Transmit On) normally show the

presence of a portable transceiver in use on

the channel corresponding to that indicator.

-5-

BALANCED

AUDIO OUT

(3 AND 4)

MICROPHONE

GROUND (1)

MICROPHONE

AUDIO (2)

BALANCED

UDIO OUT

(3 AND 4)

MICROPHONE

GROUND (1)

MICROPHON

AUDIO (2)

Plug for Telex Unit

Jack for RTS Unit

External Intercom Switch, Level Control,

and indicator: This switch enables the wired

intercom interface when “IN”, and disables it

when “OUT”. For RTS intercoms, the “IN”

position is channel 1 and the “OUT” position

is channel 2. A screwdriver adjustable control

is provided to control the input level of the

wired intercom.

Auxiliary Audio Enable Switch, Level Con-

trol, and Indicator: The switch enables and

disables the Auxiliary interface when “IN”

and “OUT”, respectively. The function of the

level control here is the same as that described

for the intercom.

REAR PANEL (Refer to Figure 4)

Transmit and Receive Antenna Connec-

tors:

Attach 5/8-wave antennas (supplied) to these

connectors; Antenna color should match the

“color dot.”

Transmit Switch: Slide switch that allows the

operator to select one of three transmit modes.

In the “OFF” position, the transmitter is al-

ways off. This mode may be used if the base is

functioning solely as a monitor. In the

“CONT” position, the transmitter is always

on. This continuous mode is recommended

over the “REMOTE” mode. In the “RE-

MOTE” position, the transmitter is enabled

only when one or more portables are active.

Headset Microphone Select Switch: This

switch allows the user to select either an

Electret or Dynamic microphone.

Intercom Connectors: Connections to inter-

face the BTR-300 with a wired intercom sys-

tem.

Auxiliary Output/Input Connectors: Can be

used for 2-way (four wire) input and output to

the BTR-300 or as a simplex input or output.

Typical uses are 4 wire intercom’s, tape re-

corders, public address inputs or outputs.

Power Jack: For external AC supply adaptor

(supplied).

Speaker Jack: Allows the use of an external

monitor if desired. An 8 ohm speaker is rec-

ommended.

Speaker Volume Control: Screwdriver ad-

justable. Adjust clockwise to increase speaker

volume or counterclockwise to decrease

speaker volume.

NOTE: Leave setting counterclockwise if no

speaker is attached.

-6-

-7-

Ext Intercom Aux Audio 1

Portable Station Connect

BTR-300

Talk

Headset Controls

Volume

Power

Headset

Portable Transmit On

Gain O/M

Push Twice to Latch

RadioCom

POWER ON

INDICATOR

POWER ON-OFF SWITCH

LOCAL HEADSET CONNECTOR

LOCAL HEADSET VOLUME

MIC ON PUSH-TO-TALK/

LOCK-TO-TALK SWITCH

LOCAL PUSH-TO-TALK INDICATOR

LOCAL MIC GAIN CONTROL

LOCAL MIC

OVERMODULATION

INDICATOR

EXTERNAL

INTERCOM

AUXILIARY

AUDIO

PORTABLE ENABLE

SWITCHES AND INDICATORS

Figure 3

Front Panel BTR-300

-8-

PUSH PUSH

Transmit

Antenna

Auxiliary

Audio Output

Auxiliary

Audio Input

Headset Mic

Dyn Elt Off

Remote

Cont

Loop Thru

Intercom Intercom

Loop-Thru

Speaker

Power

AC/DC 12V

700 mA

Transmit

AUXILIARY OUTPUT CONNECTOR

AUXILIARY INPUT CONNECTOR

INTERCOM CONNECTORS

Receive

Antenna

Intercom

Loop-Thru

RECEIVE

ANTENNA CONNECTOR

POWER JACK

SPEAKER VOLUME CONTROL

SPEAKER / LOCAL MONITOR ( 8 MIN.)

TRANSMITTER SWITCH

HEADSET MIC SELECT SWITCH

TRANSMIT ANTENNA

CONNECTOR

ANTENNA

COLOR DOT

ANTENNA

COLOR DOT

Telex Communications Inc.

BTR-300

MADE IN U.S.A.

Volume

Figure 4

Rear Panel BTR-300

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