Telex operating instructions Operating System Near Obstructions, BTR-300 Antenna Placement

Page 21

Attempting to operate the wireless intercom system through or around walls, ceilings, metal objects, etc. will reduce system range and performance.

SIGNAL REFLECTION OFF A METAL OBSTRUCTION CAUSES REDUCED SIGNAL AND “MULTIPATH”

RadioCom

RadioCom

TR-300

DO NOT - mount the BTR-300 5/8-wave an- tennas next to metal such as beams, walls with metal studs, equipment racks, etc. This also applies to the antennas when assembled directly to the BTR-300. This will “detune” the receiving antenna which can result in noise or loss of RF signal at the BTR-300. See Figure 17.

Figure 16

Operating System Near Obstructions

1. Placing the

unit in an

2. Placing the unit on top of

3. Placing the unit in an

equipment rack and

a shelf or equipment rack

equipment rack with

remoting the

antennas

u n o b s t r u c t e d w i t h o u t

the antennas mounted

is GOOD.

 

remoting the antennas is

on the BTR-300 or the

 

 

GOOD.

side of the rack is BAD.

 

 

 

 

1

GOOD

BTR-300

RadioCom

2

GOOD

BTR-300

RadioCom

3

BAD

BTR-300

RadioCom

Figure 17

BTR-300 Antenna Placement

-19-

Image 21
Contents Telex Table of Contents Block Diagram of System IntroductionGeneral Description Page BTR-300 Base Station Transceiver Technical Information Specifications BTR-300Receive FeaturesFront Panel Refer to Figure Portable Enable Switches and IndicatorsPlug for Telex Unit Crophone GainPage Front Panel BTR-300 Rear Panel BTR-300 TR-300 BELT-PACK Transceiver Technical Information Specifications TR-300Jack for RTS Units Headset XLR Connector Wiring Controls and ConnectionsPlug for Telex Units External Controls, TR-300 Dynamic / Electret BTR-300 SET-UP Equipment SET-UPInternal Intercom Switches Pin Wiring for Rear Panel JacksAttaching Brackets for Rack Mounting Rack MountingAttaching 5/8-wave Antenna Wave Antenna Assembly Antenna InformationAntenna Connections FT 60cm Minimum distance FT 2m Or more Is best Remoting Antennas when Rack MountedAntenna Polarization Antenna PlacementVertically Polarized Antennas Proper Dressing of the AntennasOperating System Near Obstructions BTR-300 Antenna PlacementHeadset Microphone Select Switch Transmit SwitchLocal Headset Connection Typical Interface to Wired System Interconnection to a HARD-WIRED Intercom SystemConnecting Auxiliary Audio SYS- TEM Power ConnectionDummy Load Battery Installation DYNAMIC/ELECTRET SwitchTR-300 SET-UP Headset ConnectionPRE-WALK-THRU Checklist Local Headset Volume PowerPush to TALK/LOCK-TO-TALK Switch System OperationLow Battery/ Overmodulation Talk Indicator Lights Battery CheckHeadset Volume TR-300 OperationEnable Switches Intercom SwitchEnabling Audio Portable TransceiversAdjusting Gain Setting System Gain LevelsBTR-300 Base Station TR-300 PortableIntercom Gain System WALK-THRUAuxiliary Gain controls Auxiliary GainProblem Solution TroubleshootingBC-300NM1 Battery Charger Battery InformationBC-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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