Telex WT-10, FMR-10 User Manual

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Page 1

Telex

Operating Instructions

Telex

CLEAR SCAN

1234

Diversity

Channel

O N

A T

I O

Audio

-20 -10 0 +3

T I

FMR-10

FMR-10 SERIES

WIRELESS USER GUIDE

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Page 3

Table of Contents

Section Page

1. Quick System Setup Guide . . . . . . . . . . . . . . . . . . . . . . . 1

2. System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3. Detailed system/component setup instructions . . . . . . . . 4

3.1. FMR-10 Receiver Setup and Operation . . . . . . . . . . 4

3.1.1 Rack Mount Installation . . . . . . . . . . . . . . . . . . . 7

3.1.2 Antenna Placement . . . . . . . . . . . . . . . . . . . . . . . 9

3.2. Handheld Transmitter Setup . . . . . . . . . . . . . . . . . . 11

3.3. Bodypack Transmitter Setup . . . . . . . . . . . . . . . . . 13

4. Guidelines/Recommendations for Best Performance . . 16

5. Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . 18

6. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 19

FCC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Accessories and Replacement Parts. . . . . . . . . . . . . . . . 21

1. Quick System Setup Guide

Receiver SetupReceiver Setup

1. Plug power supply cord into the back of the receiver and plug the power supply into an outlet. The channel display & red/green “Diversity” light on the receiver front panel should light up.

2. Attach the supplied 1/4 wave antenna’s to the FMR-10 receiver. Orient the receive antennas angled up and away from each other (at a 90 degree angle). For specific receiver setup information, re fer to section 3.1 for the FMR-10 receiver. Assure that your trans mitter(s) are turned OFF.

3. Depress “SET” button on front panel and release when channel display starts to flash (about 3 seconds). This activates

“ClearScan™” to find an interference free channel for operation. Note the channel (0 - 9) shown on the receiver front panel channel display.

4. Connect receiver audio output to mixer or amplifier. Mute or re duce mixer gain.

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Transmitter SetupTransmitter Setup

1. Open battery compartment, install 9 Volt battery. Make sure to observe proper battery polarity.

2. Adjust channel setting to match channel number shown on re ceiver channel display. Replace battery cover.

3. If using bodypack transmitter, plug the microphone into thetrans mitter connector.

Operating the System

1. Turn transmitter ON via the ON/OFF switch. After a few sec onds, the yellow “Tx On” light should illuminate on the receiver front panel.

2. Turn audio switch to the ON position to the audio.

3. Set mixer amp gain to normal position.

4. Talk/sing into the microphone at a normal volume. You should hear audio coming out of the system.

If the signal is distorted, turn the gain adjust control on the transmitter down. If the signal level is low, you may need to turn the gain adjust control up.

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2. System Description

The Telex FMR-10 Wireless is a series of 10 channel frequency agile UHF wireless systems that combine Telex’s legendary quality and reliability with high value. The transmitters and receivers operate in the UHF frequency range. The well-designed audio circuitry ensures excellent signal-to-noise ratio with accurate sound quality.

System Features

10 Channel Frequency Agile UHF system operation.

Featuring “ClearScan™” which makes for quick and easy system

setup.

Handheld transmitters feature Electro-Voice N/DYM mic ele-

ments, for superior sound quality.

True-diversity system with Posi-Phase™ insures maximum range

and freedom from interference.

Well-designed companding and audio circuitry insures high sig-

nal-to-noise ratio and excellent sound quality.

Receivers may be rack-mounted with included hardware.

FMR-10 output via 3-pin XLR-type balanced mic level connector.

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3. Detailed Setup Instructions

3.1 FMR-10 Receiver Setup & OperationReceiver Setup & Operation

1. Place the receiver where there is a clear line of sight to the area where the transmitter will be used.

2. Attach either the supplied 1/4-wave antennas or two remotely mounted antennas to the antenna connectors on the rear panel of the FMR-10. Be sure and tighten the connectors securely. If the supplied 1/4-wave antennas are used, they must be oriented at a 90oangle as shown in Figure 2. Unlike other diversity wireless systems, two

antennas are required for the FMR-10 to operate correctly.

SET ANTENNAS AT 90 DEGREES

CHANNEL

SET

CHANNEL

BUTTON

Telex

CLEAR SCAN

Channel

LOCK OUT INDICATOR

Figure 1 FMR-10 Front View

DISPLAY

Diversity

DIVERSITY

LIGHTS

1234

Audio

-20 -10 0 +3

METER

FMR-10

AUDIO METER

BALANCED

AUDIO

OUTPUT

Balanced Mic Level Output

Made

U.S.A.

POWER

JACK

Antenna Antenna

Power

12-15V AC/DC

700mA

Telex

Testedto Comply

withFCC Standards

Canada

Patent Pending

FMR-10

Squelch

SQUELCH CONTROL

llllllllllll

lllllllllll llll

Figure 2 FMR-10 Rear View

Connect the power supply cord to the receiver. Plug the power

3. supply into an AC outlet. Confirm that the receiver is ON by

checking for thelighted channel display and diversity led’s on the front panel.

NOTE: Upon power-up, the receiver will return to the channel it was set to when it was turned off.

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CAUTION: Please make sure that the AC adapter is the cor rect voltage for your local requirements.

4. ClearScan™: The FMR-10 Wireless system features ClearScan™. ClearScan™ automates the process of finding a

clear channel to use insetup ofyour FMR-10 Wireless system.To use ClearScan™, depress and hold down the set button for 3 sec onds. When the channel display begins flashing release the set button. The receiver is now searching for a clear frequency by

measuring the RFenergy present on each channel. The entirepro cess will take about 5 seconds. While scanning, the channel dis play will show the channel number being scanned. When

ClearScan™ is complete, the display will stop flashing and it will display the number of the channel recommended for use.

NOTE: If using more than one FMR-10 system, set up ONE system at a time. Turn on the transmitter for the first system, before

using ClearScan™ to set up the second. Please see the “Guideline/Recommendations for best performance” section of the FMR-10 User’s Guide to set up more than two systems.

Setting the Channel: Changing the channel on the receiver can also be done manually. By momentarily depressing the set button, the channel number is increased by one.

NOTE: when the system is turned off, the channel number is saved in non-volatile memory. When the receiver is turned on, it will return to the same channel number.

Channel Change Lock-out: Once the channel has been set on the receiver, the FMR-10 system has the capability to deactivate or lock-out the channel change button. This is done by depressing the set button for 10 seconds or more. Lock-out is active when the decimal point illuminates in the lower right corner of the channel display. This will defeat the set button. To override or defeat the lockout function, again depress the set button for 10 seconds. This will reactivate the channel set button to work normally. This function can be useful where unauthorized personnel have access to the receiver.

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NOTE: If thesystem is in “lock-out”, ClearScan™ will notfunction.

7. Make sure the gain setting is muted or turned down on the mixer or amp channel you will connect the wireless system to.

8. Plug the audio cable (not supplied) into the output connector.

NOTE: The 3-pin XLR-type connector output level is fixed, and cannot be adjusted.

Now refer to details located in the FMR-10 User’s Guide on how to set up the transmitter.

Once the Transmitter has been set-up, and turned on...

9. Speak or sing loudly into the microphone and observe the Audio level meter on the receiver. Adjust the gain control on the transmitter to prevent over or under modulation. The gain should be adjusted so that the signal peaks are no more than -10dB and that there is at least -20dB or audio level meter indication.

10. “Walk” the expected area of use to check for dropouts or interference. To minimize the potential for dropouts or interference, please observe good antenna placement. When the transmitter is turned on, the RF meter on the receiver should be illuminated in the green range to verify it is receiving a strong signal.

11.

Adjust the squelch control if necessary. The squelch control on the back of the receiver may be adjusted to effectively increase range or to reduce interference. The factory setting is at a mid point, which shouldbe suitable for most situations.To effectively increase range, turn the control counter-clockwise until you hear noise or interference, then, turn the squelch clockwise until the noise is muted. To reduce interference, turn the control clock wise.

NOTE: If the squelch is being adjusted, the transmitter should be turned off.

CAUTION! Increasing the range will make the system more susceptible to outside interference! Reducing interference will also effectively decrease the range, which will make the system more susceptible to dropouts.

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3.1.1 Rack Mount Installation3.1.1 Rack Mount Installation

The FMR-10 is supplied with rack mounts for single and double mount ing in a standard EIA 19”/ 483mm equipment rack (see Figure 3).

For rack mounting a single unit, a long and short “ear” are used. For dual side-by-side mounting, use the short “ears” and the mid sized brackets from two FMR-10 as shown.

To assemble the rack mount adapters to the unit(s) and install into a rack, proceed as follows:

1. Remove the frontPhillips headscrews fromeach sideof eachunit.

2. Align the correct rack ear or bracket with the holes on the side of the unit. Install the previously removed screws. Insert an additional screw (provided in the parts pack) into the remaining hole. Repeat this stepfor the opposite side ofthe unit. Be sure totighten all screws securely.

For double mounting of two systems, proceed as follows:

1. Align the mid-sized brackets (Item #2) with the holes on the adjacent sides of each unit.

REMOVE SCREWS (TYPICAL 4 SIDES)

C L E

A N

C h

a n n

e l

D i v e

r s i t y

A U

D I O

L E

R C A

C h a

n n e

(TYPICAL BOTH SIDES)

D i v e

r s i t y

A U

D I O

(TYPICAL ALL SIDES)

Figure 3

Rack Mount Installation

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2. Install the previously removed screws. Insert an additional screw (provided in the parts pack) into the remaining holes. Tighten all screws securely.

3. Place the two assemblies side-by-side with the mid brackets to gether. (The left bracket should fit above the right so that the countersinks are visible). Install 4 flat-head screws (Item #5) and tighten them securely.

4. Attach the antenna connectors to the brackets.

5. Attach the supplied extension cables from the rack connectors to the antenna connections on the back of the receiver.

6. Place the assembly into the rack enclosure and insert 4 #10-32 x 3/8” Phillips pan head screws (supplied) in each cornerof the rack ears and secure to the enclosure. Some rack enclosures require metric screws which are not supplied.

h a

n n

e l

i v e r

s i t y

A U

D I

h a

n e

D i v

e r s

i t y

A U

D I

Figure 4

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3.1.2 Antenna Placement3.1.2 Antenna Placement

For any wireless system to perform correctly, strong RF signals are mandatory. To maximize signal strength, good antenna placement must be utilized. Although some situations prohibit perfect antenna placement, here are some guidelines:

1. The antennas should be placed in a location with a clear signal path to the transmitter. Walls, ceilings, metal objects, equipment racks, etc. are all signal barriers that will reduce range and perfor mance. Generally speaking, placing thereceiver atan elevatedlo cation can help increase range and signal strength.

Figure 5

1/2-Wave antenna for Remote Mounting

Figure 6

If the receiver is rack-mounted, external antennas are neces sary. Do not rack mount the FMR-10 with the antennas mounted directly on the back of the unit. This will severely decrease the range and performance of the system.

If the FMR-10 is rack-mounted, make sure the antennas are front-mounted (following the directions noted above). If anten nas are mounted remotely from the chassis, the 1/4-wave anten nas supplied with the receiver cannot be used. 1/2-wave antennas are a necessity if the antennas are remote-mounted and can pro vide better performance when used with the rack mount.

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If antennas are remote-mounted, separating them 6 feet (1.8m) or more and keeping them at least 2 feet (.6m) from other barriers will improve performance (see Figure 8). If you are remote mounting the antennas and require strong signal over a large area, consider using highly directional antennas such as a log-periodic. The ALP-450 available from Telex is tuned for frequencies from 450-900 MHz and can provide an additional 5 dB of gain.

3. If you remote-mount the antennas, attention should be paid to the type and quality of the antenna cable. For cable runs longer than 25-ft. (7.6m), special low-loss cables should be used.

6 FT (2 METERS)

MICROPHONE STAND MOUNTING

2 FT (60 CM)

MINIMUM

DISTANCE

MINIMUM

DISTANCE

FMR-10

Telex

FMR-10

0+3

1 2

CLEAR

Diversity

SCAN

AUDIO

Channel

-10

-20

0+3

BRACKET SHOULD BE ATTOP OF MOUNTING SURFACE.

MOUNTING

Figure 7

SIDE

Telex

CLEAR

Diversity

SCAN

Channel

Figure 8

1 2

AUDIO

-10

-20

4. If multiple wireless systems are being used, a multi-coupler will minimize antenna interference.A multi-couplerhas one set of an tennas and distributes RF signal to multiple systems. The Telex will supply antenna signal and DC power to 4 systems, eliminat ing 3 external power supplies and 6 antennas.

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3.2 Handheld Transmitter Setup3.2 Handheld Transmitter Setup

Insert battery. Slide open the hinged battery compartment cover by placing your thumb on the indents of the battery door (at the bottom of the transmitter) and gently pushing down (see Figure

9). Insert the battery, terminal end first, into the compartment, with the smaller positive terminal to the right.

SLIDE BATTERY DOOR BACK

Telex

elex

SWING DOOR UPWARD

POWER

SWITCH

MIC

GAIN ADJUST

Telex

elex

lex

2 3

CHANNEL SET

SWITCH

2 3

Figure 9

Set handheld transmitter channel to match the channel setting

Figure 10

on the receiver (channel number displayed on front of receiver panel). The channel setting on the handheld transmitter is accessed through the round opening on the side of the mic housing. Numbers 0 - 9 are printed around the opening. The channel set ting is determined by which number the arrowed slot is pointing to. Use a small screwdriver (supplied) to change the channel set ting. See Figure 10.

Turn on the transmitter by sliding the power switch (closest to the battery compartment) forward to the ON position (toward the windscreen). The red battery condition light should flash once and then go out. If the red light stays on or illuminates during a performance, the battery should be replaced immediately. The green light will stay lit when the handheld transmitter is on.

Note: Remember to turn the transmitter OFF when not in use. This will conserve battery life.

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Verify Reception. When the transmitter is turned on: (FMR-10) the RF meter will illuminate, indicating that the receiver is pick ing up the signal. If this does not happen, make sure that the trans mitter and receiver are set to the same channels.

Unmute the audio by sliding the audio switch (immediately be low the mic element) towards the windscreen. Speak or sing into the microphone and you should hear your voice through the PA / sound system.

Adjustment of the transmitter audio gain - if necessary. The transmitter audio gain is set to a mid level which should be suit able for most situations. However, for loud or soft speakers or singers, an adjustment may be necessary. First, speak or sing into the microphone and listen closely. If the gain is too high, you will hear distortion, and if thegain is too low,the signalwill below. In either situation, an adjustment may be necessary.

To adjust the transmitter gain, gently insert the provided screwdriver (or other 3/32-in./2.4mm screwdriver) into the hole near the head of the transmitter (see Figure 12). Turn lightly until the screwdriver tip drops into the slot in the level control. Gently turn counterclockwise until the control stops (the mic output is attenuated but not “off”). Slowly turn the mic-level control up while listening to the audio. If the audio becomes distorted, turn the mic level control down (counter-clockwise) about 1/8 turn.

Note: Operate with the transmitter audio gain set as high as possi ble without distortion, for the best signal to noise ratio.

Test performance. Check to see that the RF meter on the FMR-10 receiver is illuminated, an indication that the receiver is picking up the signal. Then, “walk” the intended area of use and make sure that there are no barriers to reception or sources of in terference. If problems are encountered, see Troubleshooting Guide.

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3.3 Bodypack Transmitter SetupTransmitter Setup

Insert battery. Open the hinged battery compartment by placing your thumb or finger on the indent labeled OPEN on the battery door and pushing down, see Figure 11. When inserting the bat tery, pay attention to the polarity (+/-) and insert the terminals into the battery compartment first. Close the battery door by slid ing the door shut.

Set the transmitter channel to match the channel setting on the receiver. The channel switch on the bodypack is located just un derneath the battery door, and to the right of the indent labeled OPEN. Note the channel number label (0-9) surrounding the opening. The bodypack channel must be set to the same number as the receiver channel, which is displayed on the receiver front panel. The channel setting is determined by which number the arrowed slot is pointing to. Use a small screwdriver (supplied) to change the channel setting.

BELT CLIP MAY BE TURNED 90 DEGREES BY REMOVING SCREW AND REINSTALLING HERE.

GAIN ADJUSTMENT

TO OPEN BATTERY DOOR PRESS ARROW WITH INDEX FINGER AND PULL DOWN WITH THUMB AND MIDDLE FINGER

CHANNEL SWITCH

DOOR OPENED BUT NOT SWUNG UPWARD

SWING DOOR UPWARD TO ACCESS BATTERY COMPARTMENT

Figure 11

Channel Switch

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Turn on thetransmitter bysliding thepower switch to its on po sition. Check the condition of the battery by watching the light below the power switch. The red battery light should flash once and then go out. If the light stays on, the battery is weak and should be replaced.

MIC

CABLE

ENTRY

ANTENNA

POWER SWITCH

AUDIO

SWITCH

POWER

BAT.

BATTERY LIGHT

Figure 12

Verify reception. When the transmitter is turned on: (FMR-10)

AUDIO

O F F

the RF meter will illuminate, indicating that the receiver is picking up the signal. If this does not happen, make sure that the transmitter and receiver are set to the same channels.

Connect the audio source. If using a lavalier or headworn microphone, insert the connector on the end of the mic wire, into the connector on the bodypack. If using a lavalier mic, use the clip to attach the mic to the users clothing. If using the headworn mic, place the headset on the user’s head, positioning the mic at the corner of their mouth.

Note: Keep the audio muted while plugging in and adjusting the microphone or source. Placement of lavalier and headworn

microphones will noticeably change the sound quality, so some testing with theuser isnecessary. An importantpoint to remember, the closer to the sound source, the stronger or louder the signal.

Unmute the audio, by sliding the large AUDIO switch located on the bodypack, to the ON position. Speak or sing into the microphone and you should hear your voice through the PA / sound system.

7. Listen carefully to the audio and be sensitive of overload distor tion and low gain.

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Adjust the transmit gain if necessary. Gently insert the pro vided screwdriver or other 3/32-in. 2.4mm screwdriver into the gain adjustment located at the top edge of the battery compart ment under the door (see Figure 11). The door has to be opened but not swung upward to make adjustments. Turn lightly until the screwdriver tip drops into theslot onthe level control. Gentlyturn the control counterclockwise until the control stops (the audio output is attenuated but not “off”). Slowly turn the audio level control clockwise while listening to audio; if the audio becomes distorted, turn the mic level control counter-clockwise about 1/8 turn.

Test performance. Check to see that the RF meter on the FMR-10 receiver is illuminated, an indication that the receiver is picking up the signal. Then, “walk” the intended area of use and make sure that there are no barriers to reception or sources of interference. If problems are encountered, see Troubleshooting Guide.

10.

Clip the bodypack to the user’s belt or pocket. The bodypack can be positioned horizontally or vertically by moving the belt clip attachment. This is done by removingthe belt clip attachment screw, rotating the clip to the desired position, and replacing the screw.

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4. Guidelines/Recommendations for Best Performance

Compatibility

The receiver and transmitter must be set to the same channel to oper ate together.

Using Multiple Wireless Systems

If two or more FMR-10 Wireless and/or other VHF/UHF wireless systems are being used inthe same location, properfrequency coordi nation is necessary to avoid interference. The following FMR-10 System channels will work together:

FMR-10 FREQUENCIES

Channel Compatible Systems Operating TV Channel Systems within Number within Low Band Frequency Channel Number High & Low Band

0 ✔ 707.45 53 0 ✚ 1 ✔ 708.25 53 1 ✚ 2 ✔ 709.25 53 2 ✚ 3 710.05 54 3 4 ✔ 711.65 54 4 5 ✔ 713.85 54 5 ✚ 6 715.25 54 6 7 ✔ 718.85 55 7 ✚ 8 720.50 55 8

9 ✔ 721.45 55 9

Channel Compatible Systems Operating TV Channel Number within High Band Frequency Channel Number

0 ✔ 725.45 56 0 ✚ 1 726.25 56 1 2 ✔ 727.25 56 2 3 728.35 57 3 4 ✔ 729.65 57 4 ✚ 5 ✔ 732.65 57 5 ✚ 6 734.05 58 6 7 ✔ 736.45 58 7 ✚ 8 ✔ 737.05 58 8

9 ✔ 737.85 58 9

LOW BAND Compatible

HIGH BAND

✚

Contact your dealer or Telex for assistance, if you are planning to add more wireless systemsto be operated simultaneously in the same location.

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Multiple System Setup &Multiple System Setup & ClearScan™

ClearScan™ is most useful for finding operating frequencies for situ ations where no more than 2 systems will be used simultaneously.

When setting up more than 2 systems, use ClearScan™ to choose the first channel of operation. Set up subsequent systems following the channel groupings listed above in the “Using Multiple Wireless Sys tems” section.

Potential Sources of Interference

There are many potential sources of interference for your wireless system. Any electronic product that contains digital circuitry includ ing digital signal processors (reverb/multi-effects units), electronic keyboards, digital lighting controllers, CD players and computers, all emit RF energy that can adversely affect the performance of your wireless system. It is always best to place your receiver as far away from these devices as possible to minimize this potential source of problems.

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Battery RecommendationsBattery Recommendations

Fresh 9-volt alkaline batteries from a quality manufacturer will yield the best performance from your FMR-10 transmitters. Rechargeable

8.4-volt Ni-cad batteries can be used, but will yield much shorter op

erational time.

When the transmitter switch is turned on, the red battery light will flash once if the battery is good. If the light does not flash or stays lit continuously, the battery is weak or dead. If the light comes on during use, the battery is weakening and should be replaced as soon as possi ble.

If sound qualitydegrades during use, it may be the resultof a weakening battery.

Receiver and Antenna Placement

Do not place the receiver near a large metal object or surface. Locate the receiver as close as possible to the area where the Transmitter user will be working. Ideally, position the receiver so that the transmitter is within site of the receiver.

When using multiple systems, do not allow antennas to cross or touch each other.

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5. Troubleshooting Guide

Problem Possible Causes Solutions

No audio & no lights on receiver

No audio & no Tx ON light on receiver

No audio

Low audio signal

Distorted audio signal

Interference

Short range or drop-outs

Receiver is off

Transmitter is off

No (or dead) battery in transmitter

Faulty battery contacts in transmitter

Transmitter audio switch is off (signal is muted)

Receiver audio cable is dam aged or disconnected

Gain not sufficient on mixer/preamp/amp input.

Gain set too low (or muted) on mixer/preamp/amplifier

Receiver audio too low (1/4”/6.4mm output)

Transmitter audio level too low

Transmitter audio level too high (overloading transmitter circuit)

Receiver audio settoo high(1/4”

6.4mm output)

Battery level low in transmitter

Another wireless product in the immediate area, operating on the same frequency, or on a fre quency that mixes with another RF signal (such as a TV broad cast transmitter).

Receiver placed too close to a digital signal processor or simi lar device.

Strong electromagnetic field from stage lighting or other source near the transmitter or re ceiver, which may be producing RF noise on or near the operat ing frequency.

RF reflective metal obstacles between transmitter & receiver.

Poorly oriented beltpack an tenna

Make sure that power supply is prop erly connected and providing power to the receiver

Turn on transmitter power switch

Insert fresh battery in transmitter

Clean contacts

Turn on transmitter audio switch

Connect, repair, or replace cable

Increase mixer/preamp/amplifier gain setting

Increase gain setting on mixer/preamp/amplifier

Increase receiver audiovolume setting

Increase transmitter audiogain setting

Decrease transmitter audio gain setting

Decrease receiver audio level setting

Insert fresh battery in transmitter

Change operating frequency. If interference is weak, keep transmitter on at

all times (to override interfering sig nal) whenever receiver is on.

Move receiver to a different location

Change operating frequency. Repair or remove source of interference. Move

receiver to a different location.

Move the obstacles, or reposition the receiver

Reorient bodypack so that antenna is positioned vertical (up and down) and facing receiver, if possible

Faulty receiving antennasystem

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Reposition antennas or receiver

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6. FMR-10 Wireless Series System Technical

Specifications

UHF Receivers:UHF Receivers: FMR-10 Receiver

Receiver Type Synthesized PLL

Frequency Range (RF) Selected Frequencies between 710-866 MHz

Number of Selectable Channels 10

Diversity True Diversity with Secure-Phaseä

RF Sensitivity < .8 uV for 12 dB SINAD

Audio Output,

Frequency Response 50-15 kHz +/- 2 dB

Audio Output, Balanced (XLR) -20 dBV (600 Ohm Load)

Audio Output, Unbalanced (1/4”/6.4mm, NRU only) adjustable 8 mv to 0.775VRMS (100 K ohm load)

Distortion (THD) Less than 0.5%

Signal-to-Noise Ratio >94 dB

Dynamic Range 100 dB

(depending on Country of Operation)

UHF Transmitters:

UHF Transmitters: WT-10 and HT-10Dand HT-10D

RF Frequency Range Selected Frequencies between 710 -866 MHz

Number of Selectable Channels 10

Radiated RF Output 10-15 mW typical

Microphone Element HT-100 handheld EV N/D 767a cardioid N/DYM dynamic

TA4F Connector Wiring: Pin 1: Ground; Pin 2: Mic Input;

Audio Gain Adjustment Range 40 dB beltpacks, 26 dB handhelds

Battery Life 8 - 10 hours with 9-Volt alkaline

Bodypack Antenna flexible external 1/4 wave

Handheld Mic Antenna internal 1/2 wave

Size (Handheld transmitter) 10. 13 in. (257mm) long

Size (Bodypack transmitter) HxWxD 4.5 in. (114mm) x 2.6 in. (66mm)

(depending on Country of Operation)

Pin 3: +5 volt bias; Pin 4: +5 volt bias fed through a 3 K ohm resistor for 2-wire electrets

x 1.3 in. (32mm) (no antenna)

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FCC INFORMATION

The TELEX Receiver FMR-10 is authorized under Part 15 of the Federal Communication Commission.

The Telex WT-10 and HT-10D Transmitters are type Ac cepted under United States Federal Communications Com mission Part 74.

Licensing of Telex equipment is the user’s responsibility and licensability depends upon the user’s classification, user’s application, and frequency selected. Telex strongly urges the user to contact the appropriate telecommunications authority for any desired clarification.

CAUTION: Any changes or modifications made to the above

equipment could void the user’s authority to operate the equipment.

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ACCESSORIES AND REPLACEMENT PARTS

Order No. Description

450131 Plastic belt clip for bodypack 63850006 WLM-50 tie clip-horizontal 63850007 WLM-50 tie clip-vertical 64277000 WLM-50 omnidirectional lapel microphone 57013001 WLM-50 foam windscreen

70925001 ELM-22 MicroMini™ omnidirectional lapel mic 70928001 ELM-22 mic clip 57013001 ELM-22 foam windscreen 450124 Spring-adjusted handheld mic stand adapter 870343 Deluxe handheld mic stand adapter 71081001 Rack-mount kit - Single 71081002 Rack-mount kit - Double 730139 120-volt power supply (US/Canada type) 730140 230-volt power supply (EURO type) 730103 230-volt power supply (UK type) 71253000 UAD-2 Antenna/power distribution system

(supplies 4 units) (600-780 MHz)

879010 1/4-wave antenna with connector (668-746 MHz) 71147000 ALP-450 Directional log periodic antenna (450-900 MHz) 870658-5 1/2-wave antenna with TNC connector (690-725 MHz) 870658-6 1/2-wave antenna with TNC connector (725-760 MHz) 71138000 Universal bracket for 1/2-wave antenna with

10 ft. (3.05m) coax cable

71151025 25 ft. (7.62m) coax cable with TNC connectors 71151050 50 ft. (15.24m) coax cable with TNC connectors 71151075 75 ft. (22.86m) coax cable with TNC connectors 71151100 100 ft. (30.48m) coax cable with TNC connectors

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Telex Communications Inc., 12000 Portland Ave. South, Burnsville, MN 55337

(952) 884-4051, (800) 828-6107, Fax: (952) 887-9212

PN 803341 May 2001