Telex TR-1 User Manual

Telex

Op er ating In struc tions

RadioCom

™

BTR-1, TR-1

Pro fes sional Wire less In ter com Sys tem

Ta ble of Con tents

Sec tion 1 In tro duc tion ..............................................1-1

Gen eral De scrip tion ..........................................................................1 -1

Sys tem Fea tures .............................................................................1-1

BTR-1 Block Di a gram........................................................................1-3

TR-1 Block Di a gram .........................................................................1-4

Sec tion 2 BTR-1 Base Sta tion ........................................2-1

Con trols and Con nec tions - Front Panel ..........................................................2-1

Con trols and Con nec tions - Rear Panel ...........................................................2-2

Sec tion 3 TR-1 Beltpack ............................................3-1

Con trols and Con nec tions - Top Panel............................................................3-1

Con trols and Con nec tions - Rear Panel ...........................................................3-2

Sec tion 4 Spec i fi ca tions .............................................4-1

BTR-1 Spec i fi ca tions.........................................................................4-1

TR-1 Spec i fi ca tions ..........................................................................4-2

Sec tion 5 Ini tial Equip ment Set-Up ...................................5-1

Un pack ing .................................................................................5-1

Rack Mount ing .............................................................................5-2

Rack Mount ing a Sin gle Base Sta tion ............................................................5-2

Rack Mount ing Two Base Sta tions Side-by-Side ...................................................5-2

An tenna Con nec tion .........................................................................5-3

An tenna Po lar iza tion .........................................................................5-3

Dis tance Be tween An tennas ...................................................................5-3

An tenna Place ment ..........................................................................5-3

Sec tion 6 BTR-1 Op er a tion..........................................6-1

Ba sic Op er a tional De scrip tion ..................................................................6-1

Sys tem Quick Start .......................................................................6-1

In ter fac ing to the BTR-1 ......................................................................6-3

TX/RX An ten nas ........................................................................6-3

2W In ter com Ports .......................................................................6-3

4W In ter com Ports .......................................................................6-4

Aux il iary Port ...........................................................................6-4

CAN Bus...............................................................................6-4

Re lay..................................................................................6-4

Lo cal Head set ...........................................................................6-5

Pow er ing the Base Station .....................................................................6-5

Start-up ...................................................................................6-5

Status Screen ...............................................................................6-5

En cryp tion Code ............................................................................6-6

Sys tem Set tings .............................................................................6-6

Name and Number .......................................................................6-6

Base Main Set tings .......................................................................6-6

In ter com Type ........................................................................6-7

Aux il iary Line ........................................................................6-7

Base TX Power .......................................................................6-7

Sidetone Lev els .......................................................................6-7

Fre quency Settings .......................................................................6-7

In ter com Set tings ............................................................................6-8

RF Me ter ..................................................................................6-9

ClearScanä ................................................................................6-9

Spe cial But ton Func tions .....................................................................6-10

-i-

Ta ble of Con tents (con tin ued)

Sec tion 7 TR-1 Op er a tion ............................................7-1

Ba sic Op er a tional De scrip tion ..................................................................7-1

Sys tem Quick Start .......................................................................7-1

Bat tery Installation...........................................................................7-2

Trans mit Modes (PT TALK, PT TX).............................................................7-3

Head set Con nec tion ..........................................................................7-3

Sidetone ...................................................................................7-3

An tenna Con nec tions.........................................................................7-3

TR-1 Top Panel .............................................................................7-4

On/Off Vol ume Con trol ...................................................................7-4

BAT/O.M. Light .........................................................................7-4

Talk but ton .............................................................................7-4

A/B Selection Switch .....................................................................7-4

C Pushbut ton............................................................................7-4

Group and Chan nels .........................................................................7-5

Trans mit Fre quency ..........................................................................7-5

Re ceiver Fre quency ..........................................................................7-6

Bat tery Dis play .............................................................................7-6

Mi cro phone Gain ............................................................................7-7

Trans mit Power .............................................................................7-7

En cryp tion Code ............................................................................7-7

Se rial Num ber Code..........................................................................7-8

Auto Programing ............................................................................7-8

Soft ware/Chan nel Map Ver sion.................................................................7-8

ClearScan..................................................................................7-8

Lock Out ..................................................................................7-9

1st Use ....................................................................................7-9

Fac tory Re set ...............................................................................7-9

Sec tion 8 TR-1 Menu Struc ture ......................................8-1

Sec tion 9 BTR-1 Menu Struc ture .....................................9-1

Sec tion 10 Fre quency Bands ........................................10-1

Sec tion 11 Trou ble Shoot ing.........................................11-1

Sec tion 12 Bat tery In for ma tion ......................................12-1

Sec tion 13 2-Wire In ter com Spec i fi ca tions.............................13-1

Sec tion 14 FCC In for ma tion ........................................14-1

Sec tion 15 Soft ware Li cense.........................................15-1

Sec tion 16 Ac ces so ries and Re place ment Parts .........................16-1

-ii-

Sec tion

In tro duc tion

Gen eral De scrip tion

The Telex RadioCom™ BTR-1 UHF wire less in ter com sys -- tems is the ul ti mate in re li able, high per for mance, en crypted full du plex com mu ni ca tions.

The BTR-1 system in cludes the BTR-1 fre quency ag ile base sta tion and a TR-1 fre quency ag ile beltpack. The BTR-1 system pro vides full du plex, en crypted digital com mu ni ca tion.

The base sta tion pro vides the beltpack with ac cess to a six in -- ter com port ma trix of 2-wire sys tems or com mu ni ca tion to a 4-wire in ter com sys tem. The sys tem can in ter face with Audiocom® (Telex), RTS® TW, Clear-Com® 2-wire in ter -- com sys tems as well as 4 wire com mu ni ca tion sys tems.

In ad di tion to the 2 and 4-wire in ter com sys tems the base sta -- tion pro vides con nec tions for aux il iary bal anced au dio in put and out put, as well as re lay clo sure and the abil ity for us ing one of the six in ter com lines as a wire less only com mu ni ca tion in ter com. The sys tem is also per fectly suited for stand-alone op er a tion.

The BTR-1 has been de signed for re li able, ef fi cient op er a tion. Op er ating in the 482 to 746 MHz range. The unit has ex -- pansion abil ity to add doz ens of base sta tions to cre ate a sys -- tem. The high-ef fi ciency beltpack pro vides up to 9 hours of un in ter rupted op er a tion us ing stan dard al ka line bat ter ies.

Sys tem Fea tures

Fre quency ag ile base sta tion and beltpacks.

•

No ex ter nal com puter/de vice re quired to se lect fre quen -

•

cies.

Telex Com mu ni ca tions pro pri etary dig i tally en crypted

•

wire less com mu ni ca tion be tween the base sta tion and beltpack.

AC or DC op er a tion in the 12 to15 Volt range.

•

Backlit base sta tion LCD al lows the user to eas ily mon i tor

•

the beltpack’s sta tus.

The fre quen cies of a beltpack may be changed at the

•

beltpack or from the base sta tion.

Beltpack units con tained in a weather and shock re sis tant

•

die cast mag ne sium case.

Six chan nels of 2-Wire in ter com.

•

Com pat i ble with Audiocom® (Telex), RTS TW,

•

Clear-Com®, RTS Ma trix and other wired in ter com types.

Re lay con tact clo sure on the base station that can be ac ti -

•

vated from the beltpack.

ClearScanä func tion to au to mat i cally find the best chan -

•

nels on which to op er ate.

Base sta tions are ta ble or rack mount able.

•

RTS® and Audiocom® are reg is tered trade marks of Telex Com mu ni ca tions, Inc. Clear-Com® is a reg is tered trade mark of Clear-Com In ter com Sys tems, Inc.

1-1

1-2 Blank

LISTEN 1A

LISTEN 1B

LISTEN 2B

LISTEN 3A

LISTEN 3B

LISTEN 4A

LISTEN 4B

LISTEN 5A

LISTEN 6ALISTEN 5B

INPUT 1

OUTPUT 1

LISTEN 2A

OUTPUT 2

INPUT 4

OUTPUT 4

INPUT 3

OUTPUT 3

INPUT 5

OUTPUT 5

INTERCOM

PORT 1

INTERCOM

PORT 2

INTERCOM

PORT 3

INTERCOM

PORT 4

INTERCOM

PORT 5

INTERCOM

PORT 6

INPUT 6

4 WIRE

OUT

BTR-1 BLOCK DIAGRAM

HEADSET

GLOBAL/LOCAL

OUTPUT 6

LISTEN 6B

COMPRESSOR

EXPANDER

PRE

EMPHASIS

A/D

LOW PASS

FILTER

TRANSMITTER

RECEIVER

SQUARING

AMP

DSP

D/A

AUX

AUX OUT

LEVEL

MIC

GAIN

AUX

INPUT 2

AUX IN

1-3

Fig ure 1-1

BTR-1 Block Diagram

D/A

DSP

RECEIVER

TRANSMITTER

A/D

EMPHASIS

EXPANDER

PRE

EMPHASIS

COMPRESSOR

SQUARING

AMP

LOW PASS

FILTER

AUDIO

GATE

ELECTRET/

DYNAMIC

DETECT

2 3

VOLUME

MIC

GAIN

Fig ure 1-2

TR-1 Block Diagram

1-4

Con trols and Con nec tions - Front Panel

1 2 3 456

CONTRAST ADJUST

(1) Microphone Shield

(2) Microphone Audio

(3) Headphone High (+)

(4) Headphone Low (-)

(3) Headphone High (+)

(1) Microphone Shield

(2) Microphone Audio

PUSH

(5) (4) Headphone Low (-)

(3) Headphone High (+)

(1) Microphone Shield

(2) Microphone Audio

PUSH

Sec tion

BTR-1 Base Sta tion

Fig ure 2-1

BTR-1 - Front Panel

1. On/Off Switch: Turns the base sta tion on/off

2. [Menu] and [Set] but tons: Used to se lect menus and set op tions on the LCD.

3. Backlit LCD w/Con trast Ad just: Ad just the level of con trast to the LCD.

4. [Up] and [Down] but tons: Used to se lect menus and set op tions on the LCD.

5. Peak Aux Level Light: Will flash red when the aux il iary in put level into the base sta tion is too high.

6. Peak In ter com Level Light: Will flash red when the in - ter com in put lev els into the base sta tion are too high.

Talk Light: Green when the talk but ton is ac tive. Will turn red when the mi cro phone level into lo cal head set is high.

11. Lo cal Head set Con nec tor: Male XLR con nec tor for Telex units, Fe male XLR con nec tor for RTS units. A dy namic or electret head set mi cro phone is au to mat i cally de tected.

Telex Units

RTS Units

8. Talk But ton: Press to en able the au dio path from the head set.

Head set Vol ume: Used to ad just the vol ume level out to a head phone.

10.

Mi cro phone Gain: Ad justs the au dio gain from the lo cal head set mi cro phone.

2-1

Fig ure 2-2

Lo cal Head set Wiring

Con trols and Con nec tions - Rear Panel

ANT

CAN BUS

RCV

RELAY

AUX 4 WIRE

LOOP THRU

Telex

TELEX COMMUNICATIONS, INC.

2 WIRE INTERCOM

TRAN

12-15V AC/DC

1 AMP

BTR-1

PATENT NO. 6,373,951 B1

MADE IN U.S.A.

18 19

ANT

BTR-1 - Rear Panel

Fig ure 2-3

12. Re lay Con tacts: Nor mally Open. When ac ti vated it will close.

13. Re ceive An tenna Con nec tor: TNC Fe male con nec tor. The color dot near the con nec tor must match the color of the an tenna.

14. Aux il iary Connector: RJ-11 con nec tor used to con nect balanced aux il iary au dio into and out of a base sta tion.

15. CAN Bus: RJ-45 con nec tors used to con nect a base sta tion to a CAN type of com mu ni ca tions bus.

16.

4 WIRE Con nec tor: RJ-11 con nec tor used to con nect bal anced 4-W au dio into and out of the base sta tion.

17.

In ter com Loop Thru: Two DB15 con nec tors used to loop 6 chan nels of in ter com au dio thru a base sta tion.

18.

In ter com Jacks: XLR in ter com jacks to al low in ter fac ing to the first four in ter com ports via XLR con nec tors in ad di tion to them be ing avail able at the DB15 con nec tors.

19.

Power Con nec tor: In put power jack that re quires 12 to 15 Volts AC or DC at 1000 mA.

20.

Trans mit An tenna Con nec tor: TNC Fe male con nec tor. The color dot near the con nec tor must match the color of the an tenna.

2-2

Con trols and Con nec tions - Top Panel

Sec tion

TR-1 Beltpack

Fig ure 3-1

TR-1 Top Panel

1. On/Off & Vol ume Con trol: Turns the beltpack power on and con trols head set vol ume.

BAT/O.M. Light:

Bat tery

Overmodulation

3. Talk Light: LED is on when the talk but ton is ac tive.

4. Talk but ton: Press to en able the au dio path from the head set.

Selectable Modes:

TALK

Light flashes on power up = Bat tery OK

Light on continuously = Bat tery Low

Light does not flash or come on = Bat tery Dead

Light flashes on loud est speech = Gain OK

Light flashes on all speech = Gain too high

Light never flashes on loud est speech = Gain too Low

Push-to-Talk

Push-to-Latch

Off

A and B Lights: "A" light is on if se lec tion switch in A po si tion. "B" light is on if se lec tion switch in B position.

Se lec tion Switch: Switches be tween base sta tion pre sets A or B.

"C" Pushbutton: Press to en able the base sta tion "C" pre sets.

Momentary

Selectable Modes: But ton "C"

"C" But ton Light: "C" light is on if "C" pushbutton ac tive.

Latching

Quarterback

Off

Push-to-Talk

Latch ing Talk

3-1

Con trols and Con nec tions - Rear Panel

(1) Microphone Shield

(2) Microphone Audio

(4) Headphone Low (-)

(3) Headphone High (+)

(1) Microphone Shield

(4) Headphone Low

(3) Headphone High (+)

(2) Microphone Audio (+)

SET

PT TX

PT TALK

(1) Microphone Shield

(5) (4) Headphone Low

(3) Headphone High (+)

(2) Microphone Audio (+)

Fig ure 3-2

TR-1 Rear Panel/Con nec tor/An ten nas

9. [MENU] and [SET] but tons: Used to se lect menus and set op tions on the LCD.

10. LCD (Liq uid Crys tal Dis play)

11. [UP] and [DOWN] but tons: Used to se lect beltpack op - tions on the LCD.

12. Push-to-Talk/Push-to-Transmit Switch:

Push-to-Talk (PT TALK): The trans mit ter is al ways on. No au dio is sent un less the talk but ton is ac tive. Rec om mended po si tion.

Push-to-Trans mit (PT TX): The trans mit ter and au dio paths are off ex cept when the talk but ton is ac tive.

13. Head set Con nec tor: Male XLR con nec tor for Telex units, Fe male XLR con nec tor for RTS units.

14. Bat tery Latch: Press down to en able the bat tery pack to be re leased. While the latch is held down, slide the bat tery pack about 1/8 inch back, to ward the latch, un til it stops, then lift out.

15. Re ceive and Trans mit An tennas: The an ten nas are screw type, ¼ wave, re place able an ten nas. The color dot on the screw end of the an tenna must match color dot on an tenna re cep ta cle.

3-2

Fig ure 3-3

Head set Jack Wir ing

Telex Units

RTS Units

Sec tion

Spec i fi ca tions

BTR-1

Spec i fi ca tions

Over all

RF Fre quency Range ..................................482 - 608 MHz, 614 - 746 MHz in 18 MHz TX and RX bands

Power Re quire ments ............................................................12-15 Volts AC/DC @ 1 Amp

Tem per a ture Range...........................................................-4° F to 130° F (-20° C to 55° C)

Di men sions............................................8.25” W x 1.72” H x 9.00” D (20.9 cm x 4.4 cm x 22.9 cm)

Weight ...............................................................................3 lbs 8 oz (1.59 kg)

TX An tenna .........................................................½ Wave (sup plied), TNC Male Con nec tor

RX An tenna .........................................................½ Wave (sup plied), TNC Male Con nec tor

FCC ID: .....................................................................................B5DM519

Fre quency Re sponse ........................................................................100Hz-4.0kHz

Four Wire In put ............................................................Level Ad just able (2 Vrm s typ i cal)

Four Wire Out put ...........................................................Level Ad just able (2 Vrms typ i cal)

Telex In ter com................................In put/Out put Level Ad just able (1 Vrms typ i cal), Line im ped ance 300W

RTS In ter com .............................In put/Out put Level Ad just able (0.775 Vrms typ i cal), Line Im ped ance 200W

ClearCom® In ter com .......................... In put/Out put Level Ad just able (1 Vrm s typ i cal), Line Im ped ance 200W

Aux il iary In put .............................................................Level Ad just able (2 Vrm s typ i cal)

Aux il iary Out put ...................................................Level Ad just able (2 Vrms typ i cal into 600W)

Mi cro phone in put sen si tiv ity ............................................................10mV (200W Source)

Lo cal Head set Out put .................................................200mW out put into 150W (1% Dis tor tion)

Mute of Wire In come Port....................................................100 dB (30kHz Low Pass Fil tered)

Trans mit ter

Type ..................................................................Syn the sized Trans mit ter, 720 chan nels

Trans mit Power ...................................................50mW typical (High), 5 mW typical (Nor mal)

Mod u la tion Type .................................................................................GMSK

De vi a tion.......................................................................Com plies with FCC 74.861

RF Fre quency Sta bil ity............................................................................0.005%

Ra di ated Har mon ics & Spu ri ous ....................................................Ex ceeds FCC spec i fi ca tions

Re ceiver

Type .....................................................Dual Con ver sion Super het ero dyne, 720 chan nels each

RF Sen si tiv ity....................................................................<0.8 µV for 12 dB SINAD

IF Se lec tiv ity ............................................................................3 dB at 230 kHz

Im age Re jec tion ...........................................................................70 dB or better

RF Fre quency Sta bil ity............................................................................0.005%

Dis tor tion ..............................................................................<1% at peak level

S/N Ra tio out to wired In ter com Ports ...........................................80 dB (30kHz Low Pass Fil tered)

4-1

TR-1

Spec i fi ca tions

RF Fre quency Range .......................482 - 608 MHz, 614-746 MHz in 18 MHz TX and RX bands

Power Re quire ments ........................................6 “AA” Cells Al ka line (NiMH op tional)

Cur rent Draw ...................................................190 mA (Push-to-Talk, Talk On)

Tem per a ture Range ..............................................-4° F to 130° F (-20° C to 55° C)

Di men sions .................................3.75”W x 5.10”H x 1.65” D (9.5 cm x 12.9 cm x 4.2 cm)

Weight ......................................................15 oz (425g) with al ka line batteries

TX An tenna..........................................1/4 Wave (sup plied), Screw type, Replaceable

RX An tenna..........................................1/4 Wave (sup plied), Screw type, Replaceable

FCC ID: .........................................................................B5DM520

Fre quency Re sponse ............................................................100Hz-4.0kHz

Mi cro phone in put sen si tiv ity.................................................7 mV (200W Source)

Lo cal Head set Out put .....................................200 mW out put into 150W (1% dis tor tion)

Trans mit ter

Type ...............................................................Syn the sized, 720 chan nels

Trans mit Power ....................50 mW typ i cal (High), 5 mW typ i cal (Low), or auto-power switching

Mod u la tion Type .....................................................................GMSK

De vi a tion...........................................................Com plies with FCC 74.861

RF Fre quency Sta bil ity ................................................................0.005%

Ra di ated Har monics & Spu ri ous .................................Meets or ex ceeds FCC spec i fi ca tions

Re ceiver

Type ..................................Dual Con ver sion Super het ero dyne, Syn the sized, 720 chan nels

RF Sen si tiv ity........................................................<0.8 µV for 12 dB SINAD

IF Se lec tiv ity.................................................................3 dB at 230 kHz

Im age Re jec tion ...............................................................70 dB or better

RF Fre quency Sta bil ity ................................................................0.005%

Dis tor tion ..................................................................<1% at peak level

S/N Ra tio in From wired In ter com Ports .......................................80 dB (30kHz Low Pass Fil tered)

4-2

Un pack ing

Un pack your RadioCom™ sys tem. Be low are the items that should come with your base sta tion and each belt pack. Con -- tact the ship per or your dealer im me di ately if any thing is dam -- aged or miss ing.

BTR-1

Quantity Description

1 BTR-1 Base Station

1 Operating Instructions

1 In-Line Power Supply

2 Antennas (one Transmit, one Receive)

Sec tion

Ini tial Equip ment Set-Up

TR-1

1 Limited Warranty Sheet

4 Rubber Feet

1 Gain Adjust Plastic Screwdriver

1 Two Terminal Plug (for Relay)

2 Large Phillips Pan head Screw for Rack Mounting

2 Small Phillips Flathead Screw for rack Mounting

1 Single Unit Rack Mount Bracket

1 Dual Units (Side by Side) Middle Rack Mount Bracket

1 Rack Mount Side Bracket

1 Interconnect Cable (15 pin to 15 pin)

Quantity Description

1 TR-1 Beltpack with Antennas

1 Instruction Card

1 Battery Pack

1 Limited Warranty Sheet

5-1

Rack Mount ing

SINGLE UNIT RACK MOUNT BRACKET

DOUBLE UNIT RACK MOUNT BRACKET

RACK MOUNT MIDDLE BRACKET

NOT SUPPLIED

REMOVE SCREWS (TYPICAL 4 SIDES)

NOT SUPPLIED

The rack mount ing brack ets come with each BTR-1. These brack ets may be used to mount a sin gle base sta tion in a 19" wide rack or mount two base sta tions side by side in a rack. Fig ure 5-1 shows the three brack ets that come with a base sta -- tion.

Rack Mount ing Two Base Sta tions Side-by-Side

1. Re move the four pan head screws (two on each side) closes to the front panel.

2. Place the dou ble unit side brack ets on the sides of the base sta tions you wish clos est to the edge of the rack.

3. Re place the two pan head screws and use a third pan head screw (2 sup plied with base sta tion) to screw into the up per mid dle lo ca tion of the rack mount middle bracket.

4. Place the dual bracket on the other sides of the base sta tions. Make sure the bracket is flipped so the front bend is to ward the front of the base sta tion. As you face the rack, the right base station will have the mid dle bracket front bend high and left base station will have the bend low.

5. Re place the two pan head screws and the other pan head screw into the up per mid dle hole of each bracket.

Fig ure 5-1

Rack Mount Brack ets

Rack Mount ing a Sin gle Base Sta tion

1. Re move the four pan head screws (two on each side) clos est to the front panel.

2. Place the dou ble unit side bracket on the side of the base sta tion you wish clos est to the edge of the rack.

3. Re place the two pan head screws and use a third pan head screw (2 sup plied with base station) to screw into the up per mid dle lo ca tion of the bracket.

4. Place the sin gle unit rack mount bracket on the other side of the base sta tion.

5. Re place the two pan head screws and the other pan head screw that came with the base to se cure the bracket. Screw the third screw into the up per mid dle hole of the bracket.

6. Use the rack mount screws (not sup plied) to se cure the unit to the rack.

6. Use the four flat head screws (2 sup plied with base sta tion) to se cure the top and bot tom of the mid dle brack ets to gether.

7. Use rack mount screws (not sup plied) to se cure the unit to the rack.

Fig ure 5-3

Rack Mount ing Two Base Units Side-by-Side

Rack Mounting of a Sin gle Unit

Fig ure 5-2

5-2

An tenna Con nec tion

O F F

VOL

Telex

O F F

VOL

Telex

The base sta tion is sup plied with two (2) an ten nas. One 1/2-wave an tenna for Trans mit and one 1/2-wave for Re ceive. The an ten nas have TNC male con nec tors.

The fre quency range of the an ten nas should match the re ceiver and trans mit ter of the base sta tion. Match the color code on the an tenna with the color code on the base sta tion.

ANTENNAS SHOULD BE VERTICAL

At tach the transmit 1/2-wave an tenna to the an tenna in put re -- cep ta cle la beled “TRAN” on the right side of the rear panel. The an tenna should be ver ti cally aligned.

Fig ure 5-4

Attaching Trans mit 1/2-Wave An tenna

At tach the receive 1/2-wave an tenna to the an tenna in put re -- cep ta cle la beled “RCV” on the left side of the rear panel. The an tenna should be ver ti cally aligned.

Fig ure 5-6

Ver ti cally Po lar ized An tennas

Dis tance be tween An tennas

The dis tance be tween the base sta tion’s re ceive and trans mit an ten nas is not ad just able when the an ten nas are con nected di -- rectly on the back of the unit.

The an ten nas can be remoted for better sig nal path. A Telex coax as sem bly with re mote an ten nas may be re quired. See “Ac ces sory and Re place ment Parts” sec tion for or der ing in for -- ma tion.

NOTE: If your base sta tion is to be lo cated in a shielded rack mount en clo sure or other poor RF lo ca tion, you must re mote the 1/2-wave an ten nas with coax as sem blies. See “Ac ces sories and Re place ment Parts” sec tion for remote mount ing hard -- ware.

An tenna Place ment

Proper an tenna place ment prob a bly has the most ef fect on your TELEX Wire less In ter com Sys tem’s over all per for -- mance. The fol low ing sug ges tions will re sult in op ti mum per -- for mance.

Fig ure 5-5

Attaching Receive 1/2-Wave An tenna

An tenna Po lar iza tion

The Telex Wire less In ter com Sys tem is “Ver ti cally Po lar ized”. This means both the trans mit ting and re ceiv ing an ten nas should op er ate in the ver ti cal po si tion.

Proper place ment of the beltpack can be crit i cal. The an ten nas should be in the open. Bending the an ten nas up and plac ing the beltpack in a pocket, etc., will re duce sys tem dis tance.

It is sug gested that the unit be worn on the belt or pocket with both an tenna’s ver ti cal for best op er at ing range and per for -- mance.

Fig ure 5-7

Proper Dress ing of the An tennas

5-3

Keep the dis tance be tween the base sta tion and the beltpacks

700 FEET

100 FEET

O F F

VOL

Telex

O F F

VOL

Telex

O F

VOL

Telex

O F F

VOL

Telex

O F

VOL

Telex

as short as pos si ble. The greater the dis tance, the weaker the sig nal. Make sure the “sig nal paths” be tween the base sta tion and beltpacks are un ob structed. You should be able to vis i bly lo cate the base sta tion an ten nas at all times for best per for -- mance.

At tempting to op er ate the wire less in ter com sys tem through or around walls, ceil ings, metal ob jects, etc. will re duce sys tem range and per for mance.

Fig ure 5-8

Dis tance Be tween base sta tion and beltpack

Fig ure 5-10

Op er ating Sys tem Near Obstructions

DO NOT - mount the base sta tion 1/2-wave an ten nas on, or

next to metal, such as beams, walls with metal studs, equip -- ment racks, etc. This also ap plies to the an ten nas when as sem -- bled di rectly to the Base Sta tion. This will “de tune” the an ten nas which can re sult in noise or loss of RF sig nal at the base sta tion.

Keep ing the dis tance from the base sta tion and beltpack as short, and un ob structed as pos si ble will pro duce the most re li -- able per for mance.

The base sta tion is sup plied with two an ten nas. This should pro vide sat is fac tory sys tem per for mance in most ap pli ca tions. Sys tem range can be en hanced by remoting the 1/2-wave an -- ten nas.

Fig ure 5-9

Keeping Site Clear to An tennas

5-4

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Telex TR-1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual