Operating Instructions

RadioCom

MODEL TR-200, TR-200P WIRELESS BELT-PACK TRANSCEIVER

Table of Contents

Page INTRODUCTION...1 General Description....1 Block Diagram....2 TECHNICAL INFORMATION....3 Controls and Connections...3 Features....4 Volume ON/OFF Control....4 Low Battery and Over Modulation Indicator LED... 4 Push-To-Talk/Lock-To-Talk Switch...5 Transmit LED Indicator...5 Headset Jack....5 Belt Clip....5 Microphone Gain Control....5 Dynamic/Electret Switch...5 Battery Compartment....5 SPECIFICATIONS....6 SET-UP....7 Unpacking....7 Headset Connection....7 Dynamic/Electret Switch....7 Battery Installation....8 Battery Check....9 Battery Removal....9 Dressing the Unit....10 OPERATION....11 Power....11 Push-to-Talk/Lock-to-Talk Switch...11 Adjusting Microphone Gain...12 BATTERY INFORMATION...13 General.....13 Alkaline Batteries....13 Nickel-Cadmium Batteries...13 BC-4 Battery Charger...13 FCC INFORMATION....14 RECOMMENDED HEADSETS...14 ACCESSORIES....17 WARRANTY SERVICE INFORMATION...20 -i-

INTRODUCTION

General Description
The Telex Models TR-200 and TR-200P Belt-pack Transceivers, are designed with one transmit and one receive channel and will operate on selected frequencies within the 150 to 216 MHz band. The TR-200 Transceiver operates in the continuous transmit mode with the audio, or talk, activated by a switch. As many as four TR-200 belt-pack transceivers can operate in a fully duplex network with one Telex Model BTR-200 or BTR-200 II Base Station. The TR-200P Transceiver operates in the Push-to-Transmit mode (the transmit and talk function are activated together). Any number of TR-200P transceivers can be used in a half-duplex network with one BTR-200 or BTR-200 II Base Station. Operate only one transmitter at a time. Attempting to use two transmitters simultaneously on the same channel will cause interference. Both the TR-200 and TR-200P can be configured to operate with another TR-200 or TR-200P. The receiver portion of the TR-200 and TR-200P consists of a crystal controlled dual conversion superheterodyne design. The transmitter portion of the TR-200 and TR-200P consists of a crystal controlled multiplier/amplifier design.
Figure 1 Block Diagram of TR-200 Transceiver

TECHNICAL INFORMATION

Controls and Connections
LOW BATTERY / OVERMODULATION INDICATOR LED TALK INDICATOR LED PUSH-TO-TALK/ LOCK-TO-TALK SWITCH

BELT CLIP

VOLUME ON/OFF CONTROL

HEADSET JACK

RECEIVE ANTENNA

TRANSMIT ANTENNA

Figure 2 External controls and Connections -3-
DYNAMIC / ELECTRET SWITCH
ACCESS TO MICROPHONE GAIN CONTROL
FCC ID: B5DTR200 S/N: P / N : 1-

BATTERY COMPARTMENT

Figure 3 Internal Controls

Features

Volume ON/OFF Control: This thumbwheel control serves as both an on/off switch and as a volume control. The transceiver is turned off when the control is in the extreme counterclockwise position, when viewed from the front, and the volume is loudest when the control is in the extreme clockwise position. Low Battery and Over Modulation Indicator LED: (labeled bat/ovmod) Low Battery Indicator: Part of the battery check circuit. When the volume ON/OFF Control is placed in the ON position the LED will flash one time if the battery is good. A poor battery will cause the LED to illuminate continuously and a bad or unusable battery will not cause any illumination at all. Over Modulation Indicator: Uses the same LED as the low battery indicator. During the transmit mode if microphone gain is too high the LED will illuminate when talking. Adjust microphone gain. -4-
Push-to-Talk/Lock-to-Talk Switch: For Model TR-200, this switch enables the talk function. Press the button and hold down as long as required (Push-to-talk function), or if continuous talk is required (lock-to-talk function), quickly press the button two times to lock on. To release the talk function, press the button one time. For Model TR-200P, this switch enables the transmit and audio function and operates as described for TR-200. Transmit LED Indicator: (Labeled talk) Will be illuminated whenever the transmit function is enabled. Headset Jack: 4 Pin XLR Connector for Input/Output. The headset jack will accept 5 different Telex Model headsets and 1 handset. See Recommended Headsets starting on Page 14.

MICROPHONE SHIELD (-)

MALE CONNECTORS
HEADPHONE BALANCED AUDIO OUT

BTR-200/TR-200

MICROPHONE AUDIO (+)
Figure 4 Headset Jack Wiring Belt Clip: Combination Belt Clip/Battery Cover. Access to Battery Compartment, Microphone Gain Control and Dynamic/Electret Switch is accomplished by removal of belt clip via a quick release 1/4 turn fastener.(See Page 8) Microphone Gain Control: Screwdriver adjustable by removing belt clip and prying out the small rubber plug to the right of the screw boss. Adjust the gain control clockwise to increase microphone gain or counterclockwise to decrease microphone gain. Replace rubber plug. Dynamic/Electret Switch: Place switch towards D when using a Dynamic Microphone or E when using an Electret Microphone. NOTE: All Telex headsets used with this intercom are dynamic microphones. Unit is shipped in the D position. Battery Compartment: Holds 6 AA batteries in a removable battery holder. -5-

SPECIFICATIONS

Overall Power Requirements..6 AA cells (Alkaline, NEDA, MN 1500) Nickel Cadmium Optional Current Drain...typical 65 mA Temperature Range..-4F to 130F (-20C to 55C) Dimensions...4.25" W x 4.125" H x 2.0" D (108mm x 105mm x 51mm) Weight...13 oz (369g) with batteries Transmit Antenna..1/4-wave wire (attached) Receive Antenna..1/4-wave wire (attached) Transmit RF Frequency Range..150-216 MHz RF Frequency Stability..Crystal Controlled, 0.005% RF Power Output...50 mW Typical Modulation..FM, 5000 Hz deviation, 100 micro-seconds Pre-emphasis Modulation Limiter..Internal Compressor Modulation Frequency Range..300 to 5000 Hz +/-2 dB Microphone Audio Input..30 to 3500 ohms Microphone Input Sensitivity..2 mV Dynamic, 4 mV Electret Radiated Harmonics and Spurious Emissions..-45 dBC, Exceeds FCC Specifications FCC Acceptance..Type Accepted Under Parts 90 and 74 Receive RF Frequency Range..150-216 MHz RF Frequency Stability..Crystal Controlled, 0.005% Type..Dual Conversion Superheterodyne, FM RF Sensitivity..Less than 0.5 V for 12 dB SINAD IF Selectivity..3 dB at 30 kHz (Ceramic Filter) Image Rejection...70 dB or better Squelch Quieting....90 dB Squelch Threshold..3.0 V (internal) Signal-to-Noise Ratio...90 dB Audio Output..32 mW into 600 ohms (Headset) Distortion..Less than 1% at Rated Output

SET-UP

Unpacking: Unpack your TR-200 System. If there are any defects or shortages, refer to the Warranty Service Information section in this manual. Headset Connection: Insert the headset/microphone into the connector on the bottom of the unit. See the microphone connection diagram (Figure 4) if unit other than Telex is used.

TO HEADSET

Figure 5 Connecting Headset Dynamic/Electret Switch: If the headset you are using has an Electret microphone, the dynamic/electret switch must be in the E position (Electret). This switch is accessible by removing the belt clip and removing the battery holder. A +5 volt bias is available at the microphone plug for electret use. If you are using a headset with a dynamic microphone, place the dynamic/electret switch in the D position (Dynamic). Refer to Figure 6.
NOTE: FOR PROPER OPERATION YOU MUST MATCH THE TYPE OF MICROPHONE YOU ARE USING WITH THE DYNAMIC/ELECTRET SWITCH LOCATED INSIDE THE UNIT.

ELECTRET

DYNAMIC
Figure 6 Dynamic/Electret Switch Battery Installation: Assure that the OFF/ON Volume control knob is turned OFF. Gain access to the battery compartment by removing the belt clip on the back of the unit. Release the 1/4 turn fastener located on the back of the belt clip and remove the belt clip/cover. Refer to Figure 7. Remove the battery holder from the box. Insert six (6) AA batteries in the holder, paying close attention to polarities of the batteries.It may be necessary to turn the batteries with the thumb and forefinger the first few times the batteries are inserted into the battery holder to Assure good positive contact. Insert the holder into the case and replace the belt clip/battery cover and engage the 1/4 turn fastener.

REMOVE BELT CLIP

Figure 7 Battery Installation -8-
Battery Check: Rotate the Volume ON/OFF Control knob clockwise to turn the unit on. Note that the battery LED (Labeled bat/ ovmod) should flash one time on good batteries. Poor batteries will cause the LED to be illuminated continuously and a bad or unusable battery will not cause any illumination at all.

bat/ ovmod

Figure 8 Low Battery Indicator LED
Battery Removal: To remove the battery holder from the case to change batteries, follow the instructions as before for removing the cover. Pull the pull bale on the holder. The holder should come out.
NOTE: For maximum uninterrupted service it is suggested that new 1.5 volt alkaline AA batteries (Mallory MN1500 or equivalent) be installed prior to each use. Avoid shelf worn or economical batteries. Operation from heavy duty nickel-cadmium batteries is also permissible, at the expense of operating time. (NEDA 10015 or equivalent). Typical life of fresh alkaline batteries with the TR-200 is approximately 24 hours maximum. 8-10 hours is typical of fully charged nickel-cadmium batteries.
NOTE: Nickel-cadmium batteries can be charged right in the holder using the Telex BC-4 Battery Charger (P/N 70741000). Refer to Battery Information Section.
Dressing the Unit: It is suggested that the unit be worn on the belt or pocket with both antennas hung vertically for best operating range and performance.
Figure 9 Dressing the Unit

OPERATION

Power: Rotate the ON/OFF - Volume Control Switch counterclockwise to turn the unit on. Refer to the Battery Check Section and check batteries. After batteries have been checked, adjust the volume control by rotating the control either clockwise or counterclockwise as required for comfortable listening volume.

ON/ INCREASES VOLUME

POWER ON/OFF & VOLUME CONTROL SWITCH
Figure 10 Power ON/OFF - Volume Control Knob Push-to-Talk/Lock-to-Talk Switch: To enable the talk function, press and hold down on the talk button and begin talking. Releasing the talk button will discontinue talk audio. For continuous talk, quickly press the talk button twice. This enables the talk function as long as you want. To release the talk function press the talk button once more and the transmit function will cease.

NOTE: The talk LED will be illuminated whenever the talk function is activated.
PUSH-to-TALK/LOCK-to-TALK SWITCH
Figure 11 Push-to-Talk/Lock-to-talk Switch -11-
Adjusting Microphone Gain: If the transmitted audio from the microphone is too high or too low, remove the belt clip on the rear of the unit and pry out the small rubber plug to the right of the screw boss. This will reveal the microphone gain control potentiometer. Using a plastic screwdriver (supplied), adjust the gain control clockwise to increase the microphone gain or counterclockwise to decrease the microphone gain. Reinstall the rubber plug and belt clip when adjustments are complete.
CAUTION DO NOT remove this rubber plug or attempt to adjust. This beltpack has been precisely tuned and any attempt to alter this adjustment will result in a non-operational unit.
REMOVE THIS RUBBER PLUG FOR ACCESS TO THE MICROPHONE GAIN CONTROL
Figure 12 Adjusting Microphone Gain If the microphone gain is too high, the over modulation LED (the Over Modulation Circuitry uses the same LED as the Low Battery Circuitry [labeled bat/ ovmod]) will be illuminated when you are talking. Decrease the Microphone Gain until this illumination ceases when talking in a normal tone. -12-

BATTERY INFORMATION

General
Improper battery selection, use, installation and care are the cause of numerous wireless system failures. Alkaline Batteries: Alkaline batteries such as Mallorys DURACELL or Evereadys ENERGIZER provide the most reliable operation in wireless transceivers. The use of low cost carbon-zinc batteries is NOT recommended. Nickel-Cadmium Batteries: These batteries can save you money in the long run, as they can be recharged, but they can also cause disappointing wireless performance. If you want to use rechargeable nickel-cadmium batteries you must select a heavy duty nickel-cadmium (NEDA 10015 or equivalent)

BC-4 Battery Charger

Figure 13 BC-4 Battery Charger Remove the battery holder from the TR-200. Snap the terminal connector onto the battery holder and plug the charger into a 110 Volt outlet. Full charge of the battery pack is obtained after 14 to 16 hours. A full charge will last 8 to 10 hours. Extensive over-charging may damage or destroy the batteries. Please assure the charging time does not exceed 16 hours.
ENERGIZER is a registered trademark of Union Carbide Corporation. DURACELL is a registered trademark of Duracell Inc.
CAUTION DO NOT ATTEMPT TO CHARGE ANY ALKALINE BATTERIES WITH THIS CHARGER. THIS CHARGER IS TO BE USED WITH NICKEL CADMIUM BATTERIES USED IN THE TR200 BATTERY HOLDER ONLY.

FCC INFORMATION

The Telex Model TR-200 transceiver is Type Accepted under United States Federal communications Commission Parts 90 and 74. Licensing of Telex equipment is the users responsibility and licensability depends upon the users classification, users application, and frequency selected. Telex strongly urges the user to contact the appropriate telecommunications before ordering and choosing frequencies. CAUTION: Changes or modifications made by the user could void the users authority to operate the equipment.

RECOMMENDED HEADSETS

V-Series (See pages 17 and 18 for Ordering Information) Earphone Frequency Response..10 Hz - 20 kHz Earphone Input Sensitivity..90dB @ 1 mW Microphone Frequency Response Dynamic (MB-11)..50 Hz - 15 kHz 3 dB Electret (MB-12)..20 Hz - 20 kHz 3 d Microphone Input Sensitivity (re: 1 volt/bar) Dynamic (MB-11)..-87 dB Electret (MB-12)...-84 dB Impedance Earphones:...Mono 150 or 600 Stereo 75 or 300 Microphones....150 Size H-W-D.8" (203 mm) x 9" (228 mm) x 4" (102 mm) Weight V-200 double-sided headphone.14 ounces (396 grams) V-210 single-sided headset..10.5 ounces (298 grams) V-220 double-sided headset..15.5 ounces 439 grams)
Recommended Headsets Continued PH-1 Catalog No....64438-005 Earphone Type..Dynamic/Single Earphone Impedance...150 ohms Earphone Frequency Response..50-15,000 Hz Earphone Output...105 dB Microphone Type..Dynamic Noise Cancelling Microphone Impedance...150 ohms Microphone Frequency Response...100-8,000 Hz Microphone Output..-83 re: 1V/microbar (.071 mV) Cable Length...6 ft. (1.8 m) coiled Cable Connector...Female XLR-4 type PH-2 Catalog No....64437-006 Earphone Type...Dynamic/Dual/Mono Earphone Impedance...150 ohms Earphone Frequency Response..50-15,000 Hz Earphone Output...105 dB Microphone Type..Dynamic Noise Cancelling Microphone Impedance...150 ohms Microphone Frequency Response...100-8,000 Hz Microphone Output..-83 re: 1V/microbar (.071 mV) Cable Length...6 ft. (1.8 m) coiled Cable Connector...Female XLR-4 type PH-4 Catalog No....70340-000 Earphone Type...Dynamic/Dual/Mono Earphone Impedance...150 ohms Earphone Frequency Response..50-15,000 Hz Earphone Output...98 dB Microphone Type..Dynamic Noise Cancelling Microphone Impedance...200 ohms Microphone Frequency Response...50-10,000 Hz Microphone Output..-89 re: 1V/microbar (.035 mV) Cable Length...5 ft. (1.5 m) Cable Connector...Female XLR-4 type -15-

Recommended Headsets Continued PH-8 Catalog No....70415-001 Earphone Type...Dynamic/Mono Earphone Impedance...150 ohms Earphone Frequency Response..50-15,000 Hz Earphone Output...98 dB Microphone Type..Dynamic/Noise Cancelling Microphone Impedance...200 ohms Microphone Frequency Response...50-10,000 Hz Microphone Output..-89 re: 1V/microbar (.035 mV) Cable Length...5 ft. (1.5 m) coiled Cable Connector...Female XLR-4 type PH-10 Catalog No....70470-003 Earphone Type...Dynamic/Dual Mono Earphone Impedance...150 ohms Earphone Frequency Response..50-15,000 Hz Earphone Output...105 dB Microphone Type..Dynamic Noise Cancelling Microphone Impedance...150 ohms Microphone Frequency Response...100-8,000 Hz Microphone Output..-83 re: 1V/microbar (.071 mV) Cable Length...6 ft. (1.8 m) coiled Cable Connector...Female XLR-4 type PH-16 Catalog No...70770-003 Catalog No. (Optional liquid filled cushions)..70753-001 Earphone Type...Dynamic Earphone Impedance...150 ohms Earphone Frequency Response..15-15,000 Hz Earphone Output...105 dB Microphone Type..Dynamic Noise Cancelling Microphone Impedance...150 ohms Microphone Frequency Response...100-8,000 Hz Microphone Output..-83 re: 1V/micobar (.071 mV) Cable Length...6 ft. (1.8 m) coiled Cable Connector...Female XLR-4 type -16-

ACCESSORIES

Headsets PH-1 PH-2 PH-4 PH-8 PH-10 PH-16 Order No. 64438-005 Order No. 64437-006 Order No. 70340-000 Order No. 70415-001 Order No. 70470-003 Order No. 70770-003
V-series Headsets V-210 Single sided headset with boom Order No. 300027-001 V-220 Double sided headset with boom Order No. 300027-002 V-Series Headphone V-200 Double sided headphone Order No. 300027-000 V-Series Microphone Cartridges MB-11 Supercardioid Dynamic Order No. 300028-000 MB-12 Supercardioid Electret Order No. 300028-001 V-Series Cord Assemblies CA-10 XLR-3 Male & 1/4" 5 straight cord w/Power Supply & PTC for electret Order No. 300029-007 CA-11 XLR-3 Male & 1/4" 5 str. cord w/PTC switch for dynamic Order No. 300029-011 CA-12 Carbon amp w/PTT/PTC & 1/4" ring-tip-sleeve connector Order No. 300029-012
ACCESSORIES (Continued) V-Series Cord Assemblies (Continued) CA-20 XLR-4 Female 5 cord Order No. 300029-001 CA-22 XLR-4 Male 5 cord Order No. 300029-000 CA-30 XLR-5 Female 5 cord Order No. 300029-009 CA-33 XLR-5 Male 5 cord Order No. 300029-004 CA-40 Sony mini 4-conductor 1/8" 5 cord Order No. 300029-006 CA-50 1/4" Mono 5 cord Order No. 300029-005 CA-60 1/4" Stereo 5 cord Order No. 300029-003 CA-70 Pig Tail 5 cord Order No. 300029-002 CA-80 1/8 mini stereo 5 cord Order No. 300029-010
Nicad Battery System: Includes; Charger, batteries and battery sled. For charging nickel-cadmium batteries used in the TR-200 BC-4 Order No. 70741-000 Belt Clip Replacement Gray Order No. 96605-001 Black Order No. 96605-000

NOTE: This manual is also used for the RTS version 2110/2105 Intercom system which uses a different headphone jack. Use the illustrations below in place of Figure 4 of page5.

FEMALE CONNECTORS

RTS 2110/2105
RTS 2110/2105 4-Pin Headset XLR Connector
HEADPHONE AUDIO OUT (MONO) 2 1

HEADPHONE COMMON

RTS 2110/2105 5-Pin Headset XLR Connector
CUSTOMER SERVICE INFORMATION
If your receiver or transmitter should need servicing under the warranty, please contact:
Customer Service Department TELEX COMMUNICATIONS, INC. 8601 East Cornhusker Highway, P.O. Box 5579, Lincoln, Nebraska 68505-5579 U.S.A. Phone: (402) 467-5321 or 465-7021
All claims of defect or shortage should be sent to the above address. When returning items for service, you must provide date and proof of purchase, such as a copy of the sales receipt, to establish warranty. A letter should be included outlining all symptoms and claimed defects. Information on how the equipment was installed and used is very helpful. Please include your phone number and return address in case our service technicians need to contact you. Units that have been modified cannot be accepted for repair. Include all information requested by the Service Department. Then pack the unit 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 tape, tie it with a strong cord, and ship it by prepaid express, United Parcel Service or insured parcel post to the Telex Service Department. It is very important that the shipment be well-packed and fully insured. Damage claims must be settled between you and the carrier and this can delay repair and return of the unit to you. Telex reserves the right to make changes in design and improvement on its product without assuming any obligation to install the same on any of its products previously manufactured. Further Telex reserves the right to ship new and/or improved products which are similar to the form, fit and function of products originally ordered.

TELEX COMMUNICATIONS, INC. 12000 Portland Ave. South, Bur nsville, MN 55337, U.S.A.

MADE IN U.S.A.

APRIL 1998

PN 802205-2

BTR-200 BASE STATION TRANSCEIVER

TECHNICAL INFORMATION

SPECIFICATIONS BTR-200
Input Power..13.0 VAC RMS/300 mA with supplied adaptor or filtered 12 to 14 VDC/300 mA source Intercom Output..50 mV (Low) or 330 mV (Hi) RMS into 300 ohm load typical (at rated deviation) Intercom Input (Gain Minimum)..300 mV RMS typical (for rated deviation) Auxiliary Output..430 mV 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 Temperature Range....-4F to 130F (-20C to 55C) 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
SPECIFICATIONS BTR-200 (Cont.) Receive
RF Frequency Range....150-216 MHz RF Frequency Stability...Crystal Controlled, 0.005% Type...Dual conversion superheterodyne, FM RF Sensitivity....Less than 0.5 V 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 V (Internal) Signal-to-Noise Ratio.....90 dB Receive Antenna...5/8-wave (supplied) SO239 connector on chassis Distortion...Less than 1% at Rated Output FCC....Notification Under Part 15
FEATURES The Telex Model BTR-200 is a Base Station with one transmitter and four receivers. It is designed for portable two way communication with the capability for interface to other audio systems. Features include:

Intercom connections with the ability to interface with most wired intercom systems.
RF LED indicator for each portable station. All metal case for superior shielding. Molded
front panel for aesthetic appeal along with functionability.
An extremely flexible unit that
has the capability to communicate at one time with any number of the available portable stations (up to four) or wired stations (intercom and/or other audio source). by an external AC wall supply (supplied), via the power jack on the rear of the unit. It can also be powered by any filtered 12 to 14 VDC/300 mA source or 13.0 VAC RMS 300 mA source.

Powered

Table or single height rack mountable.

CONTROLS and CONNECTIONS

FRONT PANEL ( Refer to Figure 3) Power ON/OFF Switch: Push this switch once toturn power ON; push it again to turn the power OFF. Power ON Indicator: The Power ON Indicator is illuminated when the Power ON/OFF Switch is pushed in the ON Position. It remains illuminated while the Transceiver ison. Local Headset Connector: 4 Pin XLR Connector for Input/Output. The headset jack will accept 6 different Telex Model Headsets. See Recommended Headset Section in back of manual for more information. Compatible with other intercom headsets with four pin XLR connectors that are wired as shown in Figure 2. 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 illuminated 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 whoseoperation is signaled by the gain LED 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 selected remotes and interfaces. The indicators normally show the presence of a portable transceiver in use on the channel corresponding to that indicator.

HEADPHONE BALANCED AUDIO OUT

MALE CONNECTORS

BTR-200/TR-200

MICROPHONE SHIELD (-)

MICROPHONE AUDIO (+)
Figure 2 Headset XLR Connector Wiring Local Headset Volume: Adjusts volume to Local Headset. DOES NOT AFFECT MICROPHONE GAIN. -5-
Ext 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 A and the OUT position is channel B. A screwdriver adjustable control is provided to control the input level of the wired intercom. Auxiliary Audio Enable Switch, Level Control, 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 Antenna Connector: Connect 5/8-wave antenna (supplied) to this connector. Antenna color should match connector dot on BTR-200. Receive Antenna Connector: Connect 5/8-wave antenna (supplied) to this connector. Antenna color should match connector dot on BTR-200. See Antenna Information section for assembly information. Transmit Switch: Slide switch that allows the operator to select one of three transmit modes. In the OFF position, the transmitter is always off. This mode may be used if the base if 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 REMOTE 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. This switch is factory preset to DYN Position. NOTE: All Telex headsets that are used with this intercom are dynamic type microphones. Intercom Connectors: Connections to interface the BTR-200 with a wired intercom system. Auxiliary Output/Input Connectors: Can be used for 2-way (four wire) input and output to the BTR-200 or as a simplex input or output. Typical uses are 4 wire low level intercoms, tape recorders, public address inputs or outputs, or when operating two BTR-200 units simultaneously. Power Jack: For external AC wall supply adaptor (supplied) or any filtered 12 to 14 VDC/300 mA source, or 13.0 VAC RMS/300 mA source. Speaker Jack: Allows the user to connect an external speaker (8 ohms minimum) to the unit. Speaker Gain Control: Screwdriver adjustable. Adjust the gain control clockwise to increase speaker gain or counterclockwise to decrease speaker gain. NOTE: Leave setting counterclockwise if no speaker is attached.

INTERCOM INDICATOR PORTABLE CARRIER INDICATORS AUXILIARY ENABLE INDICATOR
Ext Intercom Aux Audio 2 4

POWER ON INDICATOR

LOCAL HEADSET VOLUME
Headset Portable Stations

POWER ON-OFF SWITCH

-7AUXILIARY LEVEL CONTROL AUXILIARY ENABLE SWITCH INTERCOM LEVEL CONTROL INTERCOM ENABLE SWITCH

LOCAL HEADSET CONNECTOR

ENABLE SWITCHES TO RECEIVE PORTABLE TRANSMITTERS
LOCAL MIC OVERMODULATION INDICATOR
LOCAL MIC GAIN CONTROL LOCAL PUSH-TO-TALK INDICATOR MIC ON PUSH-TO-TALK/ LOCK-TO-TALK SWITCH
Figure 3 Front Panel BTR-200
AUXILIARY OUTPUT CONNECTOR AUXILIARY INPUT CONNECTOR

Intercom Loop-Thru

Jack Gain
INTERCOM CONNECTORS RECEIVE ANTENNA CONNECTOR
Transmit Antenna Auxiliary Audio Input Transmit Headset Mic Dyn Elt Cont Off Remote Intercom Input
TELEX COMMUNICATIONS, INC. FCC I.D. B5DBTR-200 MADE IN U.S.A.

Receive Antenna

Auxiliary Audio Output

Speaker

AC/DC 13.O.V. 300 mA
TRANSMIT ANTENNA CONNECTOR HEADSET MIC SELECT SWITCH

TRANSMITTER SWITCH

POWER JACK SPEAKER GAIN CONTROL SPEAKER / LOCAL MONITOR ( 8 MIN.)
-8Figure 4 Rear Panel BTR-200
TR-200 BELT-PACK TRANSCEIVER
TECHNICAL INFORMATION SPECIFICATIONS TR-200 Overall
Power Requirements...6AA cells (Alkaline, NEDA, MN 1500) Nickel Cadmium Optional Current Drain....typical 65 mA Temperature Range....-4F to 130F (-20C to 55C) Dimensions....4.25 W x 4.125 H x 2.0 D (108mm x 105mm x 51 mm) Weight.....13 oz (369g) with batteries Transmit Antenna....1/4-wave wire (attached) Receive Antenna....1/4-wave wire (attached)
RF Frequency Range....150-216 MHz RF Frequency Stability...Crystal Controlled, 0.005% RF Power Output....50 mW Typical Modulation....FM, 5000 Hz deviation, 115 micro-seconds Pre-emphasis Modulation Limiter...Internal Compressor Modulation Frequency Range...300 to 5000 Hz +/_ 2 dB Microphone Audio Input....30 to 3500 ohms Microphone Input Sensitivity...2 mV Dynamic, 4 mV Electret Radiated Harmonics and Spurious Emissions...-45 dBC, Exceeds FCC Specifications FCC....Type Accepted Under Parts 90 and 74

Receive

RF Frequency Range....150-216 MHz RF Frequency Stability....Crystal Controlled, 0.005% Type Dual Conversion Superheterodyne, FM RF Sensitivity...Less than 0.5 V for 12 dB SINAD IF Selectivity....3 dB at 30 kHz (Ceramic Filter) Image Rejection....70 dB or better Squelch Quieting.....90 dB Squelch Threshold....3.0 V (Internal) Signal-to-Noise Ratio.....90 dB Audio Output...32 mW into 600 ohms (Headset) Distortion...Less than 1% at Rated Output FCC....Notification Under Part 15

FEATURES

Lig h twei ght ,

self-contained.

s m al l

s i ze

Push-to-Talk
separate antennas, one for transmit, the other for receive.
with Lock-to-Talk feature sw i t c h fo r the T R -0 and Push-to-Transmit with Lock-to-Transmit feature for the TR-200P.

CONTROLS AND CONNECTIONS

EXTERNAL CONTROLS (Refer To Figure 6) Volume OFF/ON Control: This thumbwheel control serves as both an off/on switch and as a volume control. Low Battery and Overmodulation Indicator LED: Low Battery Indicator: Part of the battery check circuit. When the power switch is placed in the ON position the LED will flash one time if the battery is good. A poor battery will cause the LED to illuminate continuously and a bad or unusable battery will not cause any illumination at all. Overmodulation Indicator: Uses the same LED as the low battery indicator. During the talk mode, if the microphone gain is too high, the LED will illuminate when talking. Push-To-Talk/Lock-To-Talk Switch: For Model TR-200, this switch enables the talk function. For Model TR-200P, this switch enables the transmit and audio function and otherwise operates as described for TR-200. Talk LED Indicator: (Labeled talk) Will be illuminated whenever the talk function on the TR-200 or transmit function on the TR-200P is enabled.
Headset Jack: A four pin XLR connector for Input/Output. The headset jack will accept six different Telex Model Headsets. See Recommended Headset Section for more information. Compatible with other intercom headsets with four pin XLR connectors that are wired as shown in Figure 5.
Figure 5 Headset XLR Connector Wiring
LOW BATTERY / OVERMODULATION INDICATOR LED TALK LED INDICATOR PUSH-TO-TALK/ LOCK-TO-TALK SWITCH

bat/ talk ovmod

BELT CLIP

VOLUME OFF/ON CONTROL

HEADSET JACK

RECEIVE ANTENNA

TRANSMIT ANTENNA
Figure 6 External Controls, TR-200
DYNAMIC / ELECTRET SWITCH
ACCESS TO MICROPHONE GAIN CONTROL
FCC ID: B5DTR200 S/N: P / N : 1-

MADE IN U.S.A.

BATTERY COMPARTMENT
Figure 7 Internal Controls, TR-200 INTERNAL CONTROLS (Refer To Figure 7) Belt Clip: Combination Belt Clip/Battery Cover. Access to Battery Compartment, Microphone Gain Control and Dynamic/Electret Switch is accomplished by removal of belt clip via a quick release 1/4 turn fastener. Microphone Gain Control: Screwdriver adjustable by removing belt clip and prying out the small rubber plug to the right of the screw boss. -12Dynamic/Electret Switch: This switch allows selection of D when using a Dynamic Microphone or "E" when using an Electret Microphone. NOTE: All Telex headsets that are used with this intercom are dynamic microphones. Unit is shipped in the D position. Battery Compartment: Holds 6 AA batteries in a removable battery holder (supplied).

LOW HIGH

Detail A High Setting

Detail B Low Setting
Figure 18 Location of High/Low Switch
RACK MOUNTING Install BTR-200 in Rack Enclosure: To rack mount the BTR-200 base transceiver do the following: Remove the two #6-32 x 3/8" screws on each side of the transceiver as shown in Figure 19.
Place the rack mount brackets (supplied) on either side of the unit and insert three #6-32 x 3/8" screws for each bracket. Tighten the screws securely. Insert the BTR-200 into your 19" rack enclosure and insert four (4) #10-32 x 3/8" Phillips pan head screws (supplied) in each corner of the rack mount brackets and secure to your enclosure.
REMOVE SCREWS (TYPICAL BOTH SIDES)

X LE TE

# 6 - 32 X 3/8
Figure 19 Attaching Brackets For Rack Mounting -19-
Remoting Antennas: It will be necessary to remote both the transmit and receive antennas on the BTR-200 when it is rack mounted. Connect the coax cable assembly (not supplied), to the back of the receive antenna receptacle and remote the 5/8-wave antenna. The antenna can be attached to either a wall mount bracket or a microphone stand bracket (not supplied). See Accessory section for order information.
You will also need to remote the transmit antenna in the same manner. Connect a coax cab l e a sse m b l y t o t h e t ra n sm i t a n t e n n a receptacle. Remote the 5/8-wave antenna, by attaching the antenna to one of the brackets (not supplied).
Figure 20 Remoting Antennas When Rack Mounted -20-
LOCAL HEADSET CONNECTION Insert the headset/microphone into the 4 pin XLR connector on the front panel. See the microphone connection diagram (Figure 2) if other than a Telex Headset is used. HEADSET MICROPHONE SELECT SWITCH If the headset you are using has an Electret microphone, the local microphone select switch must be in the ELT position (Electret). This switch is located on the rear panel. A +5 volt bias is available at the microphone plug for electret use. If you are using a headset with a dynamic microphone, place the local microphone select switch in the DYN position (Dynamic). NOTE: FOR PROPER OPERATION YOU MUST MATCH THE TYPE OF MICROPHONE YOU ARE USING WITH THE DYNAMIC/ELECTRET SWITCH LOCATED ON THE REAR OF THE UNIT. TRANSMIT SWITCH Allows the operator to select three different types of transmitting modes; continuous transmitter, transmitter off, or remote transmitter. For most operations, place the transmitter switch in the CONT position (Continuous mode). In the Continuous mode the transmitter therefore will be on at all times regardless of whether the portables are on or not. In the Remote mode, the only time the base can transmit is when a portable unit is turned on. In the Off mode the BTR-200 base station will not transmit to the remote belt-packs. This mode might be used if the base is to be a monitor station only. -21Figure 23 Transmit Switch

TO HEADSET OR HANDSET

TO HEADSET

NOTE: FOR PROPER OPERATION YOU MUST MATCH THE TYPE OF MICROPHONE YOU ARE USING WITH THE DYNAMIC/ELECTRET SWITCH LOCATED INSIDE THE BATTERY COMPARTMENT. Figure 27 Connecting Headset

ELECTRET

DYNAMIC
Figure 28 Dynamic/Electret Switch
BATTERY INSTALLATION Insure that the OFF/ON Volume control knob is turned OFF. Access the battery compartment by removing the belt clip on the back of the unit. Release the 1/4 turn fastener located on the back of the belt clip and remove belt clip/cover. Remove the battery holder from the box. Insert six (6) AA batteries in the holder, paying close attention to polarities of the batteries.It may be necessary to turn the batteries with the thumb and forefinger the first few times the batteries are inserted into the battery holder to insure good positive contact. Insert the holder into the case and replace the belt clip/battery cover and engage the 1/4 turn fastener.

REMOVE BELT CLIP

Figure 29 Battery Installation

PRE-WALK-THRU CHECKLIST

Following the instructions fully to this point you have successfully competed the following checklist: Set internal intercom switch to correspond with the wired intercom. Located the BTR-200 transceiver properly. Connected power to BTR-200 transceiver. C onnect ed t he 1/ 4- w av e a n d 5/8-wave antenna to the BTR-200. Check frequency range of the antenna matching the frequency of the BTR-200 by correctly matching color codes. Set Dynamic/Electret switches in both BTR-200 and TR-200 Set transmit switch on BTR-200.
Connected headsets to BTR-200 and all TR-200s Connected the BTR-200 to any auxiliary audio, intercom or external speaker. Installed batteries in the TR-200 Remote Transceiver. If you missed any of the above instructions, go back and complete that instruction before going on.

SYSTEM OPERATION

BTR-200 OPERATION
POWER If you have followed the instructions until this point, you should now be ready to turn both the TR-200 and the BTR-200 ON. Place the power switch on the BTR-200 in the ON position. The red power on indicator LED should illuminate. LOCAL HEADSET VOLUME Adjust the volume control on the BTR-200 by rotating theVolume control either clockwise or counterclockwise as required for comfortable listening volume.

INCREASES VOLUME

Figure 30 Power ON/OFF - Volume Control Knob
Figure 31 Volume Control - BTR-200 PUSH TO TALK/LOCK-TO-TALK SWITCH
To enable the talk function on the BTR-200, press and hold down on the talk button and begin talking. Releasing the talk button will disc o n t i n u e t h e m i c ro p h o n e a u d i o. F o r continuous talk, quickly press the talk button twice. This enables the talk function as long as you want. To release the talk function press the talk button once more and the talk function will cease. NOTE: The talk LED will be illuminated whenever the talk function is activated.

TALK LED

PUSH TO TALK LOCK TO TALK SWITCH
Figure 32 Push-to-Talk/Lock-to-Talk Switch -27-

TR-200 OPERATION

POWER You should now be ready to turn the TR-200 ON. Rotate the OFF/ON Volume Control Switch on the TR-200 counterclockwise to turn the unit on. BATTERY CHECK As you rotate the OFF/ON Volume Control knob clockwise to turn the unit on, note that the battery LED (labeled bat/ovmod) should flash one time on good batteries. Poor batteries will cause the LED to be illuminated continuously and a bad or unusable battery will not cause any illumination at all. PUSH TO TALK/PUSH TO TRANSMIT To enable the talk function on the Model TR-200 press and hold down on the talk button and begin talking. Releasing the talk button will discontinue the microphone audio. For continuous talk, quickly press the talk button twice. This locks on the talk function. To release the talk function press the talk button once. Note that the TR-200 transmits any time that the power is on. For the Model TR-200P, the switch enables both the transmit and audio functions and otherwise operates as described for the TR-200. NOTE: The talk LED will be illuminated whenever the talk function is activated.

bat/ ovmod

talk talk
Figure 33 Low Battery andOvermodulation Indicator LED HEADSET VOLUME After batteries have been checked, adjust the volume control by rotating the control as required for comfortable listening volume.
PUSH-TO-TALK/LOCK-TO-TALK SWITCH
Figure 35 Push-to-Talk/Lock-to-Talk Switch
ON/ INCREASES VOLUME ON / OFF SWITCH AND VOLUME CONTROL
Figure 34 Power ON/OFF - Volume Control -TR-200 -28-
BATTERY REMOVAL To remove the battery holder from the case to change batteries, follow the instructions as before for removing the cover. Pull the pull-bale strap on the holder, the holder should come out. Some models will not have the pull bale. If the pull bale is not present on the battery holder, turn the unit over with the battery holder facing downward. Give the case a slight shake into the palm of your hand, the holder should fall out.

NOTE: For maximum uninterrupted service it is suggested that new 1.5 volt alkaline AA batteries (Mallory MN1500 or equivalent) be installed prior to each use. Avoid shelf worn or economical batteries. Operation from heavy duty nickel-cadmium batteries is also permissible, at the expense of operating time. (NEDA 10015 or equivalent). Typical life of fresh alkaline batteries with the TR-200 is approximately 24 hours maximum, 8-10 hours is typical of fully charged nickel-cadmium batteries. NOTE: Nickel-cadmium batteries can be charged right in the holder using the Telex BC-4 Battery Charger. Refer to Battery Information Section.
Figure 36 Battery Removal -29-

ENABLING AUDIO

PORTABLE TRANSCEIVERS Select the TR-200 portables that will be on line with the BTR-200. Push in the portable enable switches that correspond to the frequencies of the TR-200 remotes that you will be using. The frequencies of the portable stations 1,2,3, and 4, are listed on the bottom of the BTR-200. The Portable Carrier LED will illuminate when the remote on that frequency is turned on. The indicators may also light in response to outside in te rf e re n ce on t hat channel o r t o intermodulation arising from portables being used at too close a distance to the base. To prevent these sources from creating undesirable noise, all unused channels should be switched out. INTERCOM SWITCH The intercom switch in the front of the unit will act as an enabling switch when the unit is being used with either a Telex Audiocom wired intercom or Clearcom wired intercom. When using a RTS system wired intercom the switch will act as a channel selector switch for selecting of either Channel A or Channel B. AUXILIARY The AUX Switch on the front of the BTR-200 will enable any auxiliary audio that will be used.
Figure 37 Enable Switches -30-
SETTING SYSTEM GAIN LEVELS
ADJUSTING GAIN The gain may need to be adjusted for various audio conditions. The overmodulation LED will indicate when the gain is too high. If the LED is illuminated when you are talking, the gain is too high and will need to be decreased. If the LED does not flash at all, and the audio is low, the gain may need to be increased. An occasional flash of the overmodulation indicator is fine. If the transmitted audio is too high or to low, the gain control potentiometer will need to be adjusted. Using a plastic screwdriver (supplied), adjust the control clockwise to increase the gain or counterclockwise to decrease the gain. Note that the gain can also be adjusted by changing the spacing between the microphone and your mouth. BTR-200 BASE STATION The microphone overmodulation indicator for the BTR-200 headset can be found on the right side of the front panel. The microphone gain control potentiometer is located to the left of the indicator. TR-200 PORTABLE The overmodulation circuitry in the TR-200 uses the same LED as the low battery circuitry. If modulation is too high this LED will illuminate when talking. If the gain needs to be adjusted, remove the belt clip on the rear of the unit and pry out the small rubber plug to the right of the screw boss. This will reveal the microphone gain control potentiometer. Once adjusted, replace the rubber plug.

INCREASE

DECREASE

CAUTION

DO NOT remove this plug or attempt to adjust. This beltpack has been precisely tuned and any attempt to alter this adjustment will result in a non-operational unit.
REMOVE THIS RUBBER PLUG FOR ACCESS TO THE MICROPHONE GAIN CONTROL

OVERMODULATION INDICATOR

Figure 38 Adjusting Microphone Gain -BTR-200 -31-
Figure 39 Adjusting Microphone Gain -TR-200
INTERCOM GAIN If the audio volume, at the intercom, is too high, the LED will be illuminated when the person on the intercom is talking. Decrease the gain until the LED does not illuminate while talking at normal volume. Occasional flashing of the LED is allowable.
AUXILIARY GAIN If the audio volume, at the auxiliary output, is too high, the Aux LED will be illuminated when the person on the auxiliary is talking. Decrease the auxiliary gain until the auxiliary LED does not illuminate while talking at normal volume. Occasional flashing of the auxiliary LED is allowable. The auxiliary indicator has three states: OFF, HALF BRIGHT, AND FULL BRIGHT. When the switch is OUT, the indicator is OFF. When the switch is IN it becomes HALF BRIGHT, and when the input compressor operates it becomes FULL BRIGHT.

OVERMOD INDICATORS

Ext Intercom Aux Audio

GAIN CONTROLS

Figure 40 Auxiliary Gain Controls

SYSTEM WALK-THRU

Now that you have successfully set up your TELEX Wireless Intercom System and turned on any auxiliary equipment you are ready to test the overall performance by Walking the TELEX system through the areas in which you will be using it. Before you begin your walk-thru check the following: TR-200 Battery Check. Set microphone gain in both the TR200 and the BTR-200. Check the push-to-talk switch is engaged in the Lock-to-talk position. LED will be illuminated. Only portable units to be used are enabled at the Base. 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-200 Under normal conditions the portable carrier indicator LEDs on the BTR-200 should always be lit when portables are transmitting. Weak Signal conditions will result in flashing of the Carrier LED. In 99% of all instances you will set up your TELEX Wireless Intercom System, walk it through and achieve error-free performance. If in the rare instance your TELEX System does not pass during your walk-thru evaluation, refer to the last section of this manual which deals with System Troubleshooting.

Reread the sections of this manual to make sure you have completed system set-up properly PROBLEM DISTORTION - Systems audio quality seems distorted at medium to high input levels.

TROUBLESHOOTING

If you are unable to solve the problem, contact the dealer from whom you purchased the system for assistance. SOLUTION
Reduce microphone gain microphone gain control.

by adjusting

HISS - System seems to produce a hiss which is undesirable. LOW OUTPUT - System produces a low output level. FEEDBACK - Moving around area of use produces squeal or howl in various locations using ext. speakers. DROPOUTS - When moving around the area of use there seems to be locations where the signal swooshes or completely disappears.
Check the gain setting on all beltpacks and the base. They may be too low. Check the gain setting on both the beltpacks and the base. They may be too low. Reduce the gain settings on both the beltpacks and the base. They may be too high. 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. Make sure Telex TR-200 beltpack is turned on - this will usually eliminate the interfering signal. If not using a beltpack, make sure the corresponding enable switch at the base is disengaged. If problems persist with the TR-200 beltpack on, you will probably need to have your systems frequency changed to another channel.
INTERFERENCE - System picks up signals other than wireless Intercoms.
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.

BATTERY INFORMATION

GENERAL
Improper battery selection, use, installation and care are the cause of numerous wireless system failures. Alkaline Batteries: Alkaline batteries such as Mallorys DURACELL or Evereadys ENERGIZER provide the most reliable operation in wireless transceivers. The use of low cost carbon-zinc batteries is NOT recommended. Nickel-Cadmium Batteries: These batteries can save you money in the long run, as they can be recharged, but they can also cause disappointing wireless performance. Typical battery life is one fourth or less of the alkaline battery. If you want to use rechargeable nickel-cadmium batteries you must select a heavy duty nickel-cadmium (NEDA 10015 or equivalent)

BC-4 BATTERY CHARGER

Remove the battery holder from the TR-200. NOTE: The BC-4 is not supplied with the TR-200. See Accessory Section for ordering information. CAUTION DO NOT ATTEMPT TO CHARGE ANY ALKALINE BATTERIES WITH THIS CHARGER. THIS CHARGER IS TO BE USED WITH NICKEL CADMIUM BATTERIES USED IN THE TR200 BATTERY HOLDER ONLY. Snap the terminal connector onto the battery holder and plug the charger into a 110 Volt outlet. Full charge of the battery pack is obtained after 14 to 16 hours. A full charge will last 8 to 10 hours. Extensive over-charging may damage or destroy the batteries. Please ensure the charging time does not exceed 16 hours.
Figure 41 BC-4 Battery Charger
ENERGIZER is a registered trademark of Union Carbide Corporation. DURACELL is a registered trademark of Duracell Inc.

V-Series

RECOMMENDED HEADSETS
Catalog No. for V-200 Double sided headphone.. 300027-000 Catalog No. for V-210 Single sided headset with boom..300027-001 Catalog No. for V-220 Double sided headset with boom..300027-002 Earphone Frequency Response....10 Hz - 20 kHz Earphone Input Sensitivity...90dB @ 1 mW Microphone Frequency Response Dynamic (MB-11)... 50 Hz - 15 kHz 3 dB Electret (MB-12)... 20 Hz - 20 kHz 3 dB Microphone Input Sensitivity (re: 1 volt/mbar) Dynamic (MB-11)....-87 dB Electret (B-12)....-84 dB Impedance Earphones:...Mono 150 or 600 W; Stereo 75 or 300 W Microphones....150 W Size H-W-D..8" (203 mm) x 9" (228 mm) x 4" (102 mm) Weight V-200 double-sided headphone:... 14 ounces (396 grams) V-210 single-sided headset:...10.5 ounces (298 grams) V-220 double-sided headset:...15.5 ounces 439 grams) Catalog No....64438-005 Earphone Type....Dynamic/Single Earphone Impedance....150 ohms Earphone Frequency Response...50-15,000 Hz Earphone Output....105 dB Microphone Type...Dynamic Noise Cancelling Microphone Impedance...150 ohms Microphone Frequency Response...100-8,000 Hz Microphone Output...-83 re: 1V/microbar (.071 mV) Cable Length....6 ft. (1.8 m) coiled Cable Connector...Female XLR-4 type Catalog No....64437-006 Earphone Type...Dynamic/Dual/Mono Earphone Impedance....150 ohms Earphone Frequency Response...50-15,000 Hz Earphone Output....105 dB Microphone Type...Dynamic Noise Cancelling Microphone Impedance...150 ohms Microphone Frequency Response...100-8,000 Hz Microphone Output...-83 re: 1V/microbar (.071 mV) Cable Length....6 ft. (1.8 m) coiled Cable Connector...Female XLR-4 type -36-
RECOMMENDED HEADSETS CONT. PH-4 Catalog No....70340-000 Earphone Type...Dynamic/Dual/Mono Earphone Impedance....150 ohms Earphone Frequency Response...50-15,000 Hz Earphone Output....98 dB Microphone Type...Dynamic Noise Cancelling Microphone Impedance...200 ohms Microphone Frequency Response...50-10,000 Hz Microphone Output...-89 re: 1V/microbar (.035 mV) Cable Length....5 ft. (1.5 m) Cable Connector...Female XLR-4 type PH-8 Catalog No....70415-001 Earphone Type....Dynamic/Mono Earphone Impedance....150 ohms Earphone Frequency Response...50-15,000 Hz Earphone Output....98 dB Microphone Type...Dynamic/Noise Cancelling Microphone Impedance...200 ohms Microphone Frequency Response...50-10,000 Hz Microphone Output...-89 re: 1V/microbar (.035 mV) Cable Length....5 ft. (1.5 m) coiled Cable Connector...Female XLR-4 type PH-10 Catalog No....70470-003 Earphone Type...Dynamic/Dual Mono Earphone Impedance....150 ohms Earphone Frequency Response...50-15,000 Hz Earphone Output....105 dB Microphone Type...Dynamic Noise Cancelling Microphone Impedance...150 ohms Microphone Frequency Response...100-8,000 Hz Microphone Output...-83 re: 1V/microbar (.071 mV) Cable Length....6 ft. (1.8 m) coiled Cable Connector...Female XLR-4 type

ACCESSORIES

Wall Mount Bracket - For vertical 5/8-wave antenna. Order No. 63906-000 Vertical 5/8-Wave Antenna - Screw apart for easy storing. For Order Information please contact the Dealer.
Microphone Stand Bracket Assembly - For mounting vertical 5/8-wave antennas on microphone stand. Order No. 63907-000
BC-4 Battery Charger - For charging nickel-cadmium battery used in the TR-200 Order No. 70741-00
25 Coax Cable Order No. 63901-000 Headsets PH-1 PH-2 PH-4 PH-8 PH-10
4 Coax Cable Order No. 63901-001 AC Power Supply 12 Volt, 60 HZ - Order No. 730279-000
Order Order Order Order Order
No. 64438-005 No. 64437-006 No. 70340-000 No. 70415-001 No. 70470-003
Headset Extension Cable - Male and Female XLR-4 type connectors HE-foot cable Order No. 92925-000 HE-foot cable Order No. 92925-001 -38-
ACCESSORIES CONT. V-Series Headsets V-200 Double sided headphone Order No. 300027-000 V-210 Single sided headset with boom Order No. 300027-001 V-220 Double sided headset with boom Order No. 300027-002 Microphone Cartridges MB-1 Supercardioid dynamic Order No. 300028-000 MB-12 Supercardioid Electret Order No. 300028-001 Cord Assemblies CA-10 XLR-3 Male & 1/4" 5 straight cord w/Power Supply & PTC for electret Order No. 300029-007 CA-11 XLR-3 Male & 1/4" 5 str. cord w/PTC switch for dynamic Order No. 300029-011 CA-12 Carbon amp w/PTT/PTC & 1/4" ring-tip-sleeve connector Order No. 300029-012 CA-20 XLR 4 Female 5 cord Order No. 300029-001 CA-22 XLR-5 Male 5 cord Order No. 300029-000 CA-30 XLR-5 Female 5 cord Order No. 300029-004 CA-33 XLR-5 Male 5 cord Order No. 300029-005 CA-40 Sony mini 4-conductor 1/8" 5 cord Order No. 300029-006 CA-50 1/4" Mono 5 cord Order No. 300029-003 CA-60 1/4" Stereo 5 cord Order No. 300029-003 CA-70 Pig Tail 5 cord Order No. 300029-002 CA-80 1/8 mini stereo 5 cord Order No. 300029-0
CUSTOMER SERVICE INFORMATION
If your receiver or transmitter should need servicing under the warranty, please contact: Customer Service Department TELEX COMMUNICATIONS, INC. 8601 East Cornhusker Highway, P.O. Box 5579, Lincoln, Nebraska 68505-5579 U.S.A. Phone: (402) 467-5321 or 465-7021 All claims of defect or shortage should be sent to the above address. When returning items for service, you must provide date and proof of purchase, such as a copy of the sales receipt, to establish warranty. A letter should be included outlining all symptoms and claimed defects. Information on how the equipment was installed and used is very helpful. Please include your phone number and return address in case our service technicians need to contact you. Units that have been modified cannot be accepted for repair. Include all information requested by the Service Department. Then pack the unit 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 tape, tie it with a strong cord, and ship it by prepaid express, United Parcel Service or insured parcel post to the Telex Service Department. It is very important that the shipment be well-packed and fully insured. Damage claims must be settled between you and the carrier and this can delay repair and return of the unit to you. Telex reserves the right to make changes in design and improvement on its product without assuming any obligation to install the same on any of its products previously manufactured. Further Telex reserves the right to ship new and/or improved products which are similar to the form, fit and function of products originally ordered.