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TROUBLESHOOTING

Reread the sections of this manual to make sure you
have completed system set-up properly

If you are unable to solve the problem, contact the
dealer from whom you purchased the system for as-
sistance.

-31-

PROBLEM

SOLUTION

DISTORTION - System’s audio quality seems
distorted at medium to high input levels.

R e d u c e m i c r o p h o n e g a i n

b y a d j u s t i n g

microphone gain control.

HISS - System seems to produce a “hiss” which is
undesirable.

Check the gain setting on all beltpacks and the
base. They may be too low.

LOW OUTPUT - System produces a low output
level.

Check the gain setting on both the beltpacks and
the base. They may be too low.

FEEDBACK - Moving around area of use
produces “squeal” or “howl” in various locations
using ext. speakers.

Reduce the gain settings on both the beltpacks and
the base. They may be too high.

DROPOUTS - When moving around the area of
use there seems to be locations where the signal
“swooshes” or completely disappears.

Make sure both antennas on the base are
connected and follow the location suggestions.
Change the location of the base unit and antennas
or avoid the bad areas with the remote beltpacks.

INTERFERENCE - System picks up signals
other than wireless Intercoms.

Make sure the Telex beltpack is turned on - this
will usually eliminate the interfering signal. If not
using a beltpack, make sure the transmit mode
switch at the base is in the off position.

If problems persist with the beltpack on, you will
probably need to change frequency channels.
Make sure the base channel switch matches the
beltpack.

NO AUDIO from BASE or BELTPACK headsets.

Check Transmitter switch on base, use CONT or
REMOTE position. Check push-to-talk function -
is the switch ON. Make sure beltpack batteries are
OK.

Summary of Contents for RadioCom BTR-500

Page 1: ... 500 600C Professional Wireless Intercom Set R TALK A 1 B 2 RadioComTM ON OFF B E L T P A C K IN OUT I C IN OUT AUX LOCAL BELT PACK SIDETONE AUDIO CHANNEL BTR 600C 1 2 I C TELEX OUT IN 1 2 RTS AUTO AUX OFF ON CODE SWITCH VOL MIC GAIN TALK OM HEADSET Telex ...

Page 2: ...10 Base Station Set up 11 Location 11 Rack Mounting 11 Local Headset Connection 11 RF Transmit Receive Channel Switches 11 RF Transmit Mode Switch 12 Intercom Type Switch 12 Dual Listen Switches 12 Audio Channel Switch 13 Telex In Out Switch 13 Auxiliary Switch 13 Auxiliary to I C Switch program audio 13 Code Switch BTR 600C Only 13 Interconnection to a Hard wired Intercom 14 Auxiliary Audio Conne...

Page 3: ...witch 23 Microphone Gain 23 Sidetone Level 24 Example System Configurations 25 Single Base Station AudioCom Telex System 25 Single Base Station RTS System 26 Six Base Station RTS System 27 Eight Base Station Telex System 28 Single Beltpack to Single Beltpack System 29 System Walk Thru 30 Troubleshooting 31 Tech Tips 32 Codes Settings and the BTR 600C 32 Frequency Interaction 32 Microphone Gain Adj...

Page 4: ...erfaced to a BTR 500 and BTR 600C systems through the use of a Telex to Clear Com In terface box see Accesories for more information In addition to the external intercom systems inter faces listed above the base stations provide connec tions for auxiliary balanced audio input and output The Radiocom BTR series has been designed for re liable efficient operation Operating in the 520 to 760 MHz rang...

Page 5: ...ks on rear panel are active on either setting 11 Intercom Light Flashes red when input level is too high See 3 for adjustment 12 Auxiliary Switch Turns the auxiliary input on and off 13 Auxiliary Light Illuminates green when switch 12 is on Flashes red when input level is too high See 5 for ad justment 14 Code Switch BTR 600C Only Allows user to select cipher code over 65 000 available Any combina...

Page 6: ... Jacks Switch set to RTS B I C Switch 4 set to RTS I C 1 and I C 2 are connected in parallel including matching pins on jacks 9 and 10 Channels 1 and 2 are selected by the Audio Channel switch on the front panel or the channel switch on the base station If neither channel 1 or 2 are connected to other inter coms plug the RTS dummy load into the I C 1 or 2 jack Do not use the dummy load if the unit...

Page 7: ... lbs 1 8kg Modulation Type BTR 600C NFSK BTR 500 FM Deviation BTR 600C Complies with FCC 74 861e6 BTR 500 40 KHz Frequency Response BTR 600C 300 4500 Hz BTR 500 300 8000 Hz RF Frequency Stability 0 005 crystal controlled Modulation Limiter Internal Compressor Microphone input sensitivity 2 0 25 mV Radiated Harmonic and Spurious Meets or exceeds FCC specifications Typically 45 dBc or better RF Freq...

Page 8: ... cipher code over 65 000 available Any combination of letters and or numbers may be selected except 0000 Data is unencypted when the setting is 0000 The code switch settings on the TR 600C and BTR 600C must match ex actly 9 Battery Latch Press down to release the battery pack Pack slides off in opposite direction 10 Headset Connector Standard XLR type Plug for Telex units and jack for RTS units Wi...

Page 9: ...dulation Limiter Internal Compressor Microphone input sensitivity 2 0 25 mV Radiated Harmonic and Spurious Meets or exceeds FCC specifications Typically 45 dBC or better RF Frequency Range 520 to 608 MHz and 614 to 760 MHz Receiver sensitivity Less than 0 5 uV for 12 dB SINAD I F Bandwidth TR 600C 230 KHz at 3dB TR 500 150 KHz at 3dB Type Single Conversion Superhet 10 7 MHz I F Image Rejection 70 ...

Page 10: ...requency range of the antennas should match the receiver and transmitter of the base station Match the color code on the antenna with the color code on the base station Attach the receive 1 2 wave antenna to the antenna input receptacle labeled Receive on the right side of the rear panel The antenna should be vertically aligned Figure 9 Attaching Receive 1 2 Wave Antenna 7 Quantity Descripton 1 BT...

Page 11: ...es or use a splitter combiner SC 600 with special broad band antennas See Example System Configurations section for a multiple unit system using a SC600 and broad band antennas Antenna Placement Proper antenna placement probably has the most ef fect on your TELEX Wireless Intercom System s overall performance The following suggestions will result in optimum performance Proper placement of the belt...

Page 12: ...600C LOCAL BELT PACK SIDETONE AUX OUT IN IN OUT I C AUDIO CHANNEL AUTO 1 2 I C TELEX IN OUT AUX OFF ON VOL TALK GAIN MIC HEADSET TALK OM CODE SWITCH A 1 B 2 Radio ComR ON OFF E B L T A P C K BTR 600C LOCAL BELT PACK SIDETONE AUX OUT IN IN OUT I C AUDIO CHANNEL AUTO 1 2 I C TELEX IN OUT AUX OFF ON VOL TALK GAIN MIC HEADSET TALK OM CODE SWITCH Telex Telex A 1 B 2 Radio ComR ON OFF E B L T A P C K BT...

Page 13: ...remote antennas for the best performance 10 TALK A 1 B 2 Telex TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 UHF ANTENNA SPLITTER COMBINER SC 600 T elexR Telex Telex Telex Telex TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 TALK A 1 B 2 UHF ANTENNA SPLITTER COMBINER SC 600 T elexR 1 2 3 1 Placing...

Page 14: ...t panel See the headset connection diagram Figure 2 if other than a Telex Headset is used Figure 18 Connecting Headset to the Base Station RF Transmit Receive Channel Switches Allows the user to select which of the two RF chan nels the unit is on The transmit channel selected either A or B is the frequency of the base sta tion s transmitter The receiver channel selected either A or B is the freque...

Page 15: ...g of the inter com channels The mixing of audio channels occurs locally only at the base station and its beltpack The switches do not affect the audio in the intercom lines into the base station Figure 22 Dual Listen Switches CH1 2 Switch OFF CH2 1 Switch OFF The two intercom audios are isolated Audio chan nel one cannot be heard on channel two and vise versa CH1 2 Switch ON CH2 1 Switch OFF Audio...

Page 16: ...l of listen only audio via the AUX jack This third channel of audio usually called Program Audio is always heard regardless of which intercom channel the user is on The program audio is heard only on the local base station and its beltpack To gain access to the switch the base station s top cover must be taken off Unscrew the six screws on the cover and lift off The switch can be found be tween th...

Page 17: ...rmation 14 INTERCONNECT CABLE SUPPLIED XLR INTERCOM CABLE ONLY ONE CABLE NEEDED FOR RTS BOTH ARE REQUIRED FOR 2 CHANNELS OF AUDIOCOM TELEX AUX ANT 1 5 6 9 1 5 6 9 LOOP THRU I C BTR 500 FCC ID B5DM503 MADE IN U S A PATENT PENDING TRANSMIT AUDIO OUT TRANSMIT CHANNEL A B I C 2 POWER 12 15V AC DC RECEIVE CHANNEL A B RECEIVE ANT I C 1 TELEX RTS I C O F F XMIT MODE REMOTE CONT CH2 1 CH2 2 O N DUAL LISTE...

Page 18: ...NT I C 1 TELEX RTS I C O F F XMIT MODE REMOTE CONT CH2 1 CH2 2 O N DUAL LISTEN LEVEL PUSH PUSH AUX ANT 1 5 6 9 1 5 6 9 LOOP THRU I C BTR 500 FCC ID B5DM503 MADE IN U S A PATENT PENDING TRANSMIT AUDIO OUT TRANSMIT CHANNEL A B I C 2 POWER 12 15V AC DC RECEIVE CHANNEL A B RECEIVE ANT I C 1 TELEX RTS I C O F F XMIT MODE REMOTE CONT CH2 1 CH2 2 O N DUAL LISTEN LEVEL PUSH PUSH AUX ANT 1 5 6 9 1 5 6 9 LO...

Page 19: ... 2 POWER 12 15V AC DC RECEIVE CHANNEL A B RECEIVE ANT I C 1 TELEX RTS I C O F F XMIT MODE REMOTE CONT CH2 1 CH2 2 O N DUAL LISTEN LEVEL PUSH PUSH AUX ANT 1 5 6 9 1 5 6 9 LOOP THRU I C BTR 500 FCC ID B5DM503 MADE IN U S A PATENT PENDING TRANSMIT AUDIO OUT TRANSMIT CHANNEL A B I C 2 POWER 12 15V AC DC RECEIVE CHANNEL A B RECEIVE ANT I C 1 TELEX RTS I C O F F XMIT MODE REMOTE CONT CH2 1 CH2 2 O N DUA...

Page 20: ...supply unit to an AC outlet supplying 105 to 125 VAC 60 Hz Figure 32 Connecting the Power Supply Dummy Load In the case where a wired intercom will not be used with the base station or only one of the audio chan nels are connected to the unit it is important that the dummy load s supplied be installed I C Switch Set for Telex Telex dummy loads should be plugged into both XLR ports if a wired Telex...

Page 21: ...are both set to A or both to B and the beltpacks are set to match Figure 34 RF Channel Switches and RF Transmit Mode Switch RF Transmit Mode Switch Allows the operator to select two different types of transmitting modes Push to talk or Push to transmit For most operations place the transmitter switch in the Push to talk mode In the Push to talk mode the RF transmitter will be on at all times regar...

Page 22: ...e batteries as follows Figure 36 Battery Installation 19 1 Open the battery pack by inserting finger nail and lifting as shown 2 Pull battery strap to remove low or dead batteries 3 Load new batteries with negative end against the spring 4 Start loading at hinged end of case 5 Be sure strap goes under batteries and over the top of the ribs 6 Tuck end of strap under door when closing ...

Page 23: ...to the correct ports and that the main antennas are con nected to the marked SC 600 ports Set RF transmit and receive switches on the base stations s to match their respective beltpacks Set transmit mode switch on base station Set wired intercom type correctly Set audio channel correctly Set Telex switch properly Set Code Switch to a unique code that matches the beltpack BTR 600C only Connected he...

Page 24: ...y ro tating the Volume control either clockwise or coun terclockwise as required for comfortable listening volume Figure 38 Push to Talk Lock to Talk Switch and Local Headset Volume Microphone Gain The microphone gain of the local headset may need to be adjusted for various audio conditions The talk overmodulation OM LED should be green if the local headset microphone has been activated This LED w...

Page 25: ...the LED flashes red on loudest speech The Aux switch controls whether the base station s auxiliary input audio is ON or OFF Aux OUT Adjusts the level of the base station s audio out to the auxiliary connector The auxiliary OUT con trol should be adjusted so that its audio is equal to other devices on the auxiliary system The base sta tion s audio is always supplied to the auxiliary jack regardless...

Page 26: ...nction To release the talk function press and re lease the talk button once NOTE The talk LED will be illuminated whenever the talk function is activated Figure 44 Push to Talk Lock to Talk Switch Microphone Gain The microphone gain of the beltpack s headset may need to be adjusted for various audio conditions The Battery Overmodulation O M LED will flash red when Mic Gain is too high and will nee...

Page 27: ...one controlled by a control on the beltpack To adjust the voice feedback to the earphone sidetone of these units simply turn the control until the sidetone is at a comfortable level Figure 46 Sidetone Level Control 24 BATTERY OVERMODULATION INDICATOR MICROPHONE GAIN INCREASE GAIN DECREASE GAIN Telex M IC G A IN ON VO LU ME TA LK AU DI O CH AN NE L 1 2 BA T O M O F F SIDETONE LEVEL CONTROL INCREASE...

Page 28: ...e 47 Example single BTR 500 Audiocom System used at a Shooting Range 25 RANGE DIRECTOR BTR 500 AUDIOCOM POWER SUPPLY PA SYSTEM SHOOTING AREA LOUD SPEAKER LOUD SPEAKER TARGET AREA SHOOTER S WIRED BELTPACKS TELEX LOAD 1 CH 1 CH 1 CH 1 CH 1 CH 1 CH AUDIO CHANNEL 1 RANGE INSTRUCTIONS AUDIO CHANNEL 2 NOT USED AUX ANT 1 5 6 9 1 5 6 9 LOOP THRU I C BTR 500 FCC ID B5DM503 MADE IN U S A PATENT PENDING TRAN...

Page 29: ... AUDIO EFFECTS LIGHTING CURTAIN 2 AUDIO EFFECTS LIGHTING CURTAIN 2 AUDIO EFFECTS LIGHTING CURTAIN EFFECTS 1 CH B P 2 AUDIO EFFECTS LIGHTING CURTAIN 2 CH B P 1 STAGE DIRECTION 2 AUDIO EFFECTS LIGHTING CURTAIN 1 STAGE DIRECTION 2 AUDIO EFFECTS LIGHTING CURTAIN Telex AUX ANT 1 5 6 9 1 5 6 9 LOOP THRU I C BTR 500 FCC ID B5DM503 MADE IN U S A PATENT PENDING TRANSMIT AUDIO OUT TRANSMIT CHANNEL A B I C 2...

Page 30: ...DIO MIXER VIDEO OPERATOR TAPE OPERATOR TRANSMIT ANTENNA RECEIVE ANTENNA AUDIO CHANNEL 1 MAIN PRODUCTION AUDIO CHANNEL 2 PRIVATE LINE FIXED STATIONS FIXED STATIONS TR 500s CAMERA 1 CAMERA 2 FLOOR MANAGER FLOOR AUDIO EXTRA BTR 500s LOOP THRU LOOP THRU LOOP THRU 1 C LOOP THRU TRANSMIT CHANNEL A B TELEX RTS I C O F F XMIT MODE REMOTE CONT CH2 1 CH2 2 O N DUAL LISTEN LEVEL TRANSMIT CHANNEL A B TELEX RT...

Page 31: ...IVATE DEF Telex Telex 1 5 6 9 1 5 6 9 1 C LOOP THRU SPOTTER 1 MAIN DEF 2 PRIVATE DEF POSITION COACH 1 MAIN DEF 2 PRIVATE DEF DEFENSIVE COACH 1 MAIN DEF 2 PRIVATE DEF EXTRA 1 PRIVATE OFF 2 PRIVATE DEF SPOTTER 1 MAIN OFF 2 PRIVATE OFF POSITION COACH 1 MAIN OFF 2 PRIVATE OFF OFFENSIVE COACH 1 MAIN OFF 2 PRIVATE OFF 1 C LOOP THRU 1 C LOOP THRU 1 C LOOP THRU 1 C LOOP THRU 1 C LOOP THRU 1 C LOOP THRU 1 ...

Page 32: ... The two operators need to be in constant full duplex communication with each other in a noisy paper press environment Figure 51 Example of a TR 500 System used at a Publishing Firm 29 Telex RF TX FREQ 1 RF RX FREQ 2 Telex RF TX FREQ 2 RF RX FREQ 1 Single Beltpack to Single Beltpack System ...

Page 33: ...evels are set to an appropriate level The system walk thru can detect problems of weak signal strength caused by Poor antenna location Wrong antenna for receiver and or transmitter RF Trouble Spots Operating distance beyond system capability Old or used batteries in the TR 500 600 Under normal conditions the indicator LED on the base station s beltpack should always be lit when their beltpacks are...

Page 34: ...ngs on both the beltpacks and the base They may be too high DROPOUTS When moving around the area of use there seems to be locations where the signal swooshes or completely disappears Make sure both antennas on the base are connected and follow the location suggestions Change the location of the base unit and antennas or avoid the bad areas with the remote beltpacks INTERFERENCE System picks up sig...

Page 35: ... environments where the background noise is loud or the user has a strong quiet voice the gain control will need to be adjusted In Figure 52 the gain is set correctly The user s root mean square RMS sound level is well below the OM threshold and only on a few loud peaks does his or her voice flash the OM indicator light Figure 53 displays the same gain setting as in Figure 52 but brought into a hi...

Page 36: ...Send 12 3 VDC Receive 4 VDC Minimum Power Voltage 30 0 VDC nominal 2 COMMON 1 3 POWER AUDIO MALE Battery Information Improper battery selection use installation and care are the cause of numerous wireless system failures Alkaline Batteries Alkaline batteries such as Mallory s DURACELL or Eveready s ENER GIZER provide the most reliable operation in wireless transceivers Typical battery life of fres...

Page 37: ...Combiner PN 71197 000 Single 19 Rack Mount Kit PN 71081 006 Mounts one base station in a 19 rack Dual 19 Rack Mount Kit PN 71081 007 Mounts two base stations side by side in a 19 rack Signal Switch Option PN 878811 1 This option allows the user of a beltpack to re motely activate special relay contacts on a base station CCB 1 Interface Device Interfaces Telex balanced to ClearCom unbalanced One CC...

Page 38: ...it as follows Check the unit to see that all parts and screws are in place Then wrap it in heavy paper or put it in a plastic bag If the original carton is not available place the unit in a strong carton that is at least six inches bigger in all three dimensions than the unit Fill the carton equally around the unit with resilient packing material shredded paper foam etc Seal it with gummed paper t...

Page 39: ...sing of Telex equipment is the User s responsibility and licensibility depends on the user s classification users application and frequency selected Telex strongly urges the user to contact the appropriate telecommunications authority for any desired clarification CAUTION Changes or modifications made by the user could void the user s author ity to operate the equipment ...

Page 40: ...R TELEX COMMUNICATIONS INC 12000 Portland Ave South Burnsville MN 55337 PN 801567 2 JAN 2001 Made in U S A ...

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