Telex BTR-300 operating instructions

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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.

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Contents Telex Table of Contents General Description Block Diagram of SystemIntroduction Page Technical Information Specifications BTR-300 BTR-300 Base Station TransceiverFeatures ReceivePortable Enable Switches and Indicators Front Panel Refer to FigurePlug for Telex Unit Crophone GainPage Front Panel BTR-300 Rear Panel BTR-300 Technical Information Specifications TR-300 TR-300 BELT-PACK TransceiverPlug for Telex Units Jack for RTS Units Headset XLR Connector WiringControls and Connections External Controls, TR-300 Dynamic / Electret Equipment SET-UP BTR-300 SET-UPPin Wiring for Rear Panel Jacks Internal Intercom SwitchesRack Mounting Attaching Brackets for Rack MountingAntenna Connections Attaching 5/8-wave Antenna Wave Antenna AssemblyAntenna Information Remoting Antennas when Rack Mounted FT 60cm Minimum distance FT 2m Or more Is bestAntenna Placement Antenna PolarizationVertically Polarized Antennas Proper Dressing of the AntennasBTR-300 Antenna Placement Operating System Near ObstructionsLocal Headset Connection Headset Microphone Select SwitchTransmit Switch Interconnection to a HARD-WIRED Intercom System Typical Interface to Wired SystemDummy Load Connecting Auxiliary Audio SYS- TEMPower Connection DYNAMIC/ELECTRET Switch Battery InstallationTR-300 SET-UP Headset ConnectionPRE-WALK-THRU Checklist Power Local Headset VolumePush to TALK/LOCK-TO-TALK Switch System OperationBattery Check Low Battery/ Overmodulation Talk Indicator LightsHeadset Volume TR-300 OperationIntercom Switch Enable SwitchesEnabling Audio Portable TransceiversSetting System Gain Levels Adjusting GainBTR-300 Base Station TR-300 PortableSystem WALK-THRU Intercom GainAuxiliary Gain controls Auxiliary GainTroubleshooting Problem SolutionBattery Information BC-300NM1 Battery ChargerBC-300NM1 Battery Charger GeneralBC-300NM2 Battery Charger BC-300NM2 Battery ChargerAccessories Customer Service Information FCC Information JAN Made in U.S.A
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