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Dea r Va lued C ustomer,
Tha nk you for c hoosing Listen! All of us a t Listen a re dedic a ted to providing
you with the highest qua lity produc ts a va ila ble. We ta ke grea t pride in their
outsta nding performa nc e bec a use we c a re tha t you a re c ompletely
sa tisfied. Tha t’s why we independently c ertify them to the highest qua lity
sta nda rds a nd ba c k them with a limited lifetime gua ra ntee. We sta nd rea dy
to a nswer a ny questions you might ha ve during insta lla tion or in the opera tion
of our produc ts. Should you experienc e a ny problems wha tsoever with your
Listen produc ts, we a re rea dy to help you in a ny wa y we c a n with prompt,
effic ient c ustomer c a re. Bec a use a t Listen, it’s a ll a bout you! And should you
ha ve a ny c omments on how we might improve our produc ts or our
servic e, we’re here to listen.
Here’s how to rea c h us:
+1.801.233.8992
North Americ a
+1.800.330.0891
fa x
+1.801.233.8995
support@listentec h.c om
www.listentec h.c om
Tha nk you a nd enjoy your listening experienc e!
Best rega rds,
Russell G entner a nd the Listen Tea m
• In the few insta nc es where repa irs were needed, 99% of a ll c lients indic a ted tha t they were ha ppy with
repa ir turn-a round-times a nd 85% of the time, c lients were without their produc t for less tha n 10 da ys!
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Assistive Listening • La ngua ge Interpreta tion • Soundfield • Tour G roup • C onferenc ing
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LT-800 Table of Contents
Pa c ka ge C ontents
Spec ific a tions
3
4
4
4
5
Arc hitec tura l Spec ific a tions
Spec ific a tions
Bloc k Dia gra m
Quic k Referenc e
6
Setup Instruc tions
7
Opera ting Instruc tions
Audio C ontrol
Listen SQ™ (Super Quiet)
RF Rec eption Ma ximiza tion Stra tegies
C oa xia l C a ble
10
11
12
13
13
C ha nnel Selec tion
14
15
15
16
17
C ompa tibility C ha rts
72 MHz Frequenc y C ompa tibility C ha rt
216 MHz Frequenc y C ompa tibility C ha rt
Phona k Frequenc y C ompa tibility C ha rt
Supplementa ry Informa tion
Troubleshooting
18
18
20
20
21
21
22
C omplia nc e Notic e
FC C Sta tement
Wa rra nty
C onta c ting Listen
Optiona l Ac c essories
1
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LT-800 Pac kage Contents
LT-800 Contents
Listen Part Number
• LT-800-072 (72 MHz) or
• LT-800-216 (216 MHz) or
• 12 VDC Power Supply
• User Ma nua l
LT-800-072 (72 MHz)
LT-800-216 (216 MHz)
Optional Accessories
See pa ge 22
3
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LT-800 Spec ific ations
Architectural Specifications
The sta tiona ry FM tra nsmitter sha ll be c a pa ble of broa dc a sting on 57 c ha nnels. The tra nsmitter
sha ll ha ve a SNR of 80dB or grea ter. The output power sha ll be a djusta ble to qua rter, ha lf or
full. C ha nnel tuning sha ll be c a pa ble of being loc ked. The devic e sha ll broa dc a st on both wide
a nd na rrow ba nd c ha nnels. The devic e sha ll ha ve a n a udio frequenc y response of 63 Hz to
15k Hz, ± 3dB a t 72 MHz, or of 63 Hz to 10k Hz, ± 3dB a t 216 MHz. It sha ll ha ve two mixing a udio
inputs. The devic e sha ll ha ve the following a udio c ontrols: input level, mix level a nd a n
a djusta ble low pa ss filter. The devic e sha ll ha ve a n a udio proc essor tha t is c a pa ble of
a utoma tic ga in c ontrol a nd limiting. The Listen LT-800 is spec ified.
Specification
Specifications
RF Frequency Range
Number of Channels
Frequency Accuracy
Transmitter Stability
Output Power
LT-800-072
LT-800-216
72.025 - 75.950 MHz
216.025 - 216.9875 MHz
19 wide band, 38 narrow band
17 wide band, 40 narrow band
+/-.005% stability 32˚ to 122˚F (0˚- 50˚C)
50 PPM
RF
80,000uV at 3 m
100mW (max allowed by FCC)
Antenna
Various Antennas available
BNC
Antenna Connector
Compliance
FCC Part 15, Industry Canada
FCC Part 90, Industry Canada
** All system specifications are wireless end-to-end
50 Hz - 15 kHz (±3 dB)
System Frequency Response
50 Hz - 10 kHz (±3 dB)
System Signal to Noise Ratio
(A-Weighted)
80 dB SQ enabled; 60 dB SQ disabled
80 dB SQ enabled; 50 dB SQ disabled
System Distortion
<2% total harmonic distortion (THD) at 80% deviation
Rear panel. (1) Female-XLR and ¼ in. combo connector, balanced, 0/-55 dBu (line/mic) nominal input level adjustable,
-30/+21 dBu (line/mic) maximum input level, impedance 20k/1k Ohms (line/mic), phantom power +12 VDC.
Audio Input 1
Audio
Rear panel. Two (2) Phono connectors, unbalanced, -10/+10 dBu nominal input level
adjustable, +30 dBu maximum, impedance 100k Ohms.
Audio Input 2
Audio Processing (Process)
Contour
Compression can be turned on/off. Slope internally adjustable from 1:1 to 4:1. Default 2:1
Cuts and boosts frequencies above 5 kHz
Input 1 and Input 2 Mixed Output (Rear Panel). Two (2) phono connectors, unbalanced, -10 dBu nominal output level,
+19 dBu maximum, impedance 10 ohm.
Combined Audio Output (Mix)
Headphone Output (Monitor)
Front panel. One (1) 3.5 mm stereo connector, unbalanced, adjustable output level, +7 maximum, impedance 10 Ohm.
Front Panel
Power, Test Tone on/off, Channel UP/DOWN, Input levels, Mix level, Contour, Monitor volume control.
Input 1 Level (line, mic, mic-phantom power), Input 2 Level (-10/+10 dBu), RF Power (low, mid, high)
Compression ratio for audio processor
Rear Panel
Controls
Internal Adjustments
Programming
SQ on/off, Processing on/off. Channel lock
Input 1 and Input 2, Mix VU
SQ and Processing
RF Power
Indicates Input 1, Input 2 and Mix audio levels. 10 segment LED’s (8 green, 2 red)
Indicated by a green LED when on (front panel)
Indicators
Indicated on the LCD (low, mid, high)
LCD Display
Channel designation, lock status, RF Power Level, programming (front panel)
Red LED illuminates when test tone enabled
Test Tone
Power Supply Type
In-line power supply. Listen part number LA-207 (Line cord is determined by each country’s AC power standards).
Input: 100-240 VAC, 50-60 Hz, 0.4 A
Power Supply Input
Power
Power Supply Output
Power Supply Connector
Power Supply Compliance
Output: 12 VDC, 1.3 A, 15.6 W
Output Connector: .02 in. (5.0 mm) OD, .01 in. (2.5 mm) ID, barrel type
UL, CE, GS, TUV
Dimensions (H x W x D)
Color
1.75 x 8.50 x 9.13 in. (4.5 x 21.5 x 23 cm)
Dark Grey with white silk screening
2.6 lbs. (5.7 kg)
Unit Weight
Unit Weight with LA-201
Power Supply
4.4 lbs. (2.0 kg)
Physical
Shipping Weight
5.0 lbs. (2.26 kg)
One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space.
Optional rack mount (LA-326)
Rack Mounting
Temperature - Operation
-10˚C (14˚F) to +40˚C (104˚F)
-20˚C (-4˚F) to +50˚C (122˚F)
Environmental Temperature - Storage
Humidity
0 to 95% Relative Humidity, non condensing
Specifications are subject to change without notification
4
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LT-800 Bloc k Diagram
POWER
On
Off
Red
LED
3.5MM
Stereo
CHANNEL SELECT
In-Line
Power Supply
LA-201
115VAC6
0 Hz
Up
HEADPHONE
(provided)
15VAC, 1A
Power Supply
CPU Module
Down
Volume
Listen LCD Display
Backlighted
MIX Level
VU Meter
Top Mounted
Antenna Stud
Compression Ratio
(internal adjustment)
Remote
Antenna
Connection
Transmitter RF Board
Pre-emphasis
Processing
SQ
Companding
BNC
ANTENNA
Green
LED
Green
LED
MIX LEVEL
Off
On
On
Low
Off
High
Functions controlled by the CP
Module
Mid
PROCESS
RF POWER
SQ
CONTOUR
Input 1 VU
Meter
Input 2 VU
Meter
Input Level
Front Panel
12VDC
Input 1 Level Select
Mic-Phantom Pwr, Mic, Line
Line
Mic
Mic
Phantom Pwr
Input 2 Level Select
+10dBu/-10dBu
Test Tone Button
Front Panel
+10dBu
-10dBu
ON
OFF
Red
LED
Female XLR-1/4
Combo Connect
Phono
Phono
400Hz
2/Tip 3/Ring
1/Sleeve
INPUT 2
MIX OUTPUT
TEST TONE
INPUT 1
5
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LT-800 Quic k Referenc e
LT-800 Front Panel: Controls & Displays
Top mount antenna connection:
Remove rubber plug and screw
antenna in place.
Indicates
Process Mode
is active.
Indicates
LCD: Shows
Super Quiet
which channel
is selected.
Adjust audio input levels
of Input 1 and Input 2
here. See page 11 for
more information.
Indicates audio input
level of Input 1 and
Input 2.
Monitor Port: Plug
in a headset and
adjust volume.
mode is active.
Shows
mixed audio
level.
Mix Level: Adjust so
the Mix Level meter
occasionally lights
the red LED.
Power
ON / OFF
Channel Select Down:
Press for 8 seconds to
enter program mode.
See page 8 for more
information.
Test Tone: Activates
a tone to aid system
setup.
Channel Select Up:
Press for 3 seconds
to lock on current
channel.
Contour: Equalization
adjustment. Turn
counter-clockwise for
voice and clockwise for
music.
LT-800 Back Panel: Connections & Settings
Input 1: Used for balanced
Input 2: Set switch to
Remote Antenna Connection:
Mix Output: These connectors
contain a mix of Input 1 and
Input 2. They are unbalanced
phono connectors; and the
output level is -10dBu.
connection of a microphone
or line level input. This
combination connector
accepts either XLR or ¼”
phono plugs.
match the level of your
Input 2 audio source,
See page 22 or the Listen
website for details on antennas
that can be attached here.
not used to increase or
decrease level by +10dBu.
12 VDC 1.3 A
Select Line, Mic or Mic+Phantom
Power. Line is balanced 0 dBu
input level, Mic is -55dBu, +12VDC
supplied in PH Power position.
If not using input 1, leave in line
position.
Set RF Power level here
(¼, ½, and Full). See
page 9 for guidelines
on setting power levels.
Input 2: Connect
unbalanced audio to these
phono connectors, input
level -10dBu or +10dBu.
The Listen LA-201
power supply
connects here.
6
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LT-800 Setup Instruc tions
1
2
Unpack the Product
Remove outer pa c ka ging a nd pla stic c over. Inspec t for physic a l da ma ge.
Mount in Rack (if necessary)
If ra c k mounting the unit, insta ll the optiona l ra c k mount kit (pa rt LA-326) a c c ording to the
instruc tions inc luded with the kit, then insta ll the LT-800 in the ra c k.
NOTE: If rac k mounting, you will need to use a rear c onnec tion antenna.
Rack Mount with single unit installed
Rack Mount with dual unit installed
Shown with LT-800
3
Connect Antenna
C onnec t the a ntenna (not inc luded) a c c ording to the insta lla tion
instruc tions. Only use a n a ntenna supplied by Listen. If you a re
c onnec ting the a ntenna direc tly to the top of the LT-800, you will
need to remove the rubber plug on top of the unit. If you a re using
a remote a ntenna c onnec ted to the rea r of the unit, do not
c onnec t a n a ntenna to the top c onnec tor. See pa ge 22 for
a ntenna options, or refer to the Listen website for remote a ntenna
Coax antenna connection.
Rear of LT-800 shown.
LA-122 Remote Antenna
See RF Reception Maximization
Strategies and Coaxial Cable on
page 13.
rubber plug
LT-800 shown with top mount
antenna connected through top of
unit (part numbers LA-101, LA-106 (72
MHz) or LA-102 (216 MHz)
4
Connect Power
Plug the power supply into the power c onnec tor on the
ba c k pa nel, then plug the power supply into a n outlet. Only
use a Listen a pproved power supply (The LA-207, a n in-line
switc hing power supply, is the a pproved power supply for this
unit).
12 VDC 1.3
A
5
Select Phonak Compatibility (if necessary)
If you will be using Phona k rec eivers with your LT-800 (216 MHz only), the tra nsmitter c a n bec ome
c ompletely c ompa tible through softwa re c ontrol. When switc hed to this mode, the LT-800 tra nsmitter
will displa y the Phona k c ha nnels. By integra ting Phona k c ha nnels a nd c ompa tibility into the
LT-800-216, it is more c onvenient to use Phona k rec eivers with Listen tra nsmitters. (www.phona k.c om)
7
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LT-800 Setup Instruc tions (c ont.)
To Select Phonak Mode:
Press a nd hold down the c ha nnel selec t “up” button while
powering on the unit. The LC D will displa y a “P” momenta rily
upon power up indic a ting tha t the tra nsmitter is in the Phona k
C ha nnel Mode. The c ha nnels displa yed will now ma tc h
Phona k c ha nnels. To return to the Listen c ha nnel designa tions,
repea t this proc ess. The LC D will displa y a n “L” momenta rily
upon power up indic a ting tha t you a re in the Listen
C ha nnel Mode.
6
Select Channel Mode (if necessary)
Your tra nsmitter ha s been shipped to you with only a limited number of c ha nnels a va ila ble (Ba sic
Mode). If a ll c ha nnels (Expa nded Mode) a re required, use the following proc edure.
To Select Expanded Mode:
To ena ble or disa ble the Expa nded Mode, press a nd hold the
c ha nnel selec t “down” button while powering on the unit. When
the Ba sic Mode is ena bled, “L/O” (loc kout) will be displa yed on the
LC D displa y a s shown below. This indic a tor is extinguished when in
the Expa nded Mode.
7
Set SQ™ (Super Quiet) and Process Features
Your tra nsmitter is shipped to you with SQ (super quiet) ena bled a nd Proc ess disa bled. For
a deta iled desc ription of these fea tures a nd when to use them, plea se refer to pa ge 12.
To Disable or Enable SQ and Process Features:
With the unit on press a nd hold the c ha nnel selec t “Down” button for 8 sec onds. The
progra m (PG M) ic on will a ppea r on the LC D.
Onc e in the progra m mode,
Program
icon
the SQ a nd Proc ess fea turs c a n be turned on a nd off by pressing the c ha nnel selec t
buttons. Press the c ha nnel selec t “Up” button to toggle between Proc ess On a nd Off.
Press the c ha nnel selec t “Down” button to toggle between SQ On a nd Off.
LED lit when
Process is enabled
If the green LED is displa yed on the front pa nel,
LED lit when
SQ is enabled
tha t fea ture is ena bled. Onc e you ha ve ena bled or
disa bled the fea tures a s desired, let the tra nsmitter
exit the progra m mode by wa iting 5 sec onds.
8
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LT-800 Setup Instruc tions (c ont.)
8
Set RF Power
Full
Set the RF POWER switc h on the ba c k of the unit
to Full, 1/2 or 1/4 (Level is indic a ted on the LC D
displa y). The a mount of tra nsmitted RF power tha t
you will need depends on your a pplic a tion. If you
a re opera ting multiple tra nsmitters in the sa me
environment, it is best to set the tra nsmitters
output power to its lowest level to reduc e the
possibility of interferenc e.
power
1/2
power
Back of LT-800 unit
1/4
power
9
Connect Audio Inputs
The LT-800 ha s two a udio input options: Input 1 a nd Input 2. Input 1 is a ba la nc ed c onnec tion using
either a n XLR or 1/4” phono c onnec tor. Input 2 ha s two unba la nc ed mixing phono c onnec tors.
Use Input 1 if you a re using a mic rophone or if you ha ve a ba la nc ed c onnec tion suc h a s from a
professiona l a udio mixer (you c a n a lso use Input 1 for unba la nc ed c onnec tions). Use Input 2 to
c onnec t to a n unba la nc ed a udio sourc e.
Input 1
C onnec t the a udio sourc e(s) to one or both a udio
Line
input c onnec tions. Input 1 offers a c hoic e of
Back of LT-800 with XLR connected to Input 1
ba la nc ed XLR or 1/4” phono c onnec tor.
Mic
Plug your mic rophone into Input 1 a nd move
the input selec t switc h to Mic (for dyna mic
mic rophones) or Mic + PH Power (for c ondenser
mic rophones).
Mic with
Phantom
Power
Plug your ba la nc ed or unba la nc ed a udio sourc e
into Input 1. Use the following dia gra m.
XLR Wiring
1/4” Phone Wiring
-
+
7
Input 2
Plug your unba la nc ed a udio sourc e into Input 2 a nd selec t the a udio
level switc h for -10dBu or +10dBu, to ma tc h the a udio level c oming
from your equipment.
9
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LT-800 Operating Instruc tions
Power Unit On
1
2
Turn power on by pressing the power button.
Select a Channel
Selec t the tra nsmit c ha nnel by pressing the c ha nnel selec t UP a nd DOWN buttons. See
C ha nnel Selec tion on pa ge 14 for more informa tion.
Channel Select UP and DOWN buttons
NOTE: The LT-800 is shipped with only limited c hannels (Basic Mode). To selec t
from all c hannels (Expanded Mode) refer to page 12. (for a more detailed
desc ription of Basic and Expanded Mode refer to page 12)
3
Lock on Channel
Onc e you determine your tra nsmit c ha nnel, you c a n loc k the tra nsmitter on tha t c ha nnel.
To loc k a c ha nnel hold the C ha nnel Selec t “Up” button for 3 sec onds until the pa dloc k
ic on a ppea rs on the displa y. To unloc k, repea t this proc ess a nd the pa dloc k ic on will
disa ppea r.
Loc k ic on
4
Test Tone (if necessary)
To broa dc a st a test tone, press the test tone button. This helps to test rec eivers when no
a udio sourc e is a va ila ble.
Press Test Tone
button here
10
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LT-800 Audio Control
Adjust Audio Input Level
1
Adjust the input knob c ounterc loc kwise to a dd ga in to Input 1. This will dec rea se ga in
to Input 2. Adjust input knob c loc kwise to a dd ga in to Input 2. This will dec rea se ga in
to Input 1. If you ha ve two a udio sourc es c onnec ted to both Input 1 a nd 2, a djust the
level of one input using the VU meter, then a djust the output level of the other a udio
sourc e. Adjust the input level until the left VU meter(s) oc c a siona lly illumina te the red
LEDs. Illumina tion of the red LEDs indic a tes the unit is in limiting. Limiting is required so
tha t the unit does not over-modula te the tra nsmitter. If you don’t wa nt a ny a udio
limiting to oc c ur, ma ke sure the red LEDs never illumina te. If you wa nt a highly limited
signa l, turn the a udio ga in up so the red LEDs illumina te often.
2
Adjust Contour
Adjust the C ontour knob c ounterc loc kwise if your a udio sourc e is mostly voic e. Adjust
the knob c loc kwise if your a udio sourc e is mostly music . The C ontour knob a djusts the
rela tive equa liza tion of the unit. This equa liza tion boosts or c uts frequenc ies a bove 5 kHz.
3
Adjust Mix Level
Adjust the mix level until the right VU meter oc c a siona lly illumina tes the red LED. This is the
level a djustment for the c ombined output from Input 1 a nd Input 2.
If you a re using a nother ma nufa c turers’ rec eivers with the LT-800, determine the frequenc y
of their rec eivers then refer to Listen’s Frequenc y C ompa tibility Ta bles (pa ges 15-16) to find
the LT-800 c ha nnel tha t c orresponds with the rec eiver’s frequenc y. We rec ommend
verifying c orresponding c ha nnel designa tions on these ta bles to ensure c ompa tibility
a nd provide the best possible rec eption.
The LT-800 is Phona k c ompa tible a nd c a n be set to displa y Phona k spec ific c ha nnels. See
pa ge 8 to set C ha nnel Mode a nd pa ge 14 for spec ific c ha nnel designa tions.
11
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Listen SQ™ (Super Quiet) - Improving Your Listening Experienc e
People a re a c c ustomed to listening to low noise, high fidelity a udio
SQ Summary
(delivered via C D, DVD, etc .). FM ra dio systems, suc h a s those ma de
• SQ is NOT squelch
by Listen, ha ve more inherent noise c ompa red to most sound systems.
• SQ improves noise performance
by at least 20dB
To minimize noise, Listen uses a noise reduc tion tec hnology c a lled
ListenSQ™ . Both the tra nsmitter a nd rec eiver must ha ve the SQ
fea ture ena bled to a c hieve the desired results. SQ is a va ila ble on
new Listen systems, inc luding the system you rec eived in this shipment.
If you a re pla nning to use this produc t with older Listen systems tha t
do not ha ve Listen SQ, or equipment not ma nufa c tured by Listen, you
must disa ble Listen SQ.
• SQ is NOT compatible with
older version Listen products
• SQ is NOT compatible with
other manufacturers’ products
• To work properly, SQ must be
enabled for both the transmitter
and receivers
Your Listen LT-800 ha s been shipped to you with the SQ fea ture
ena bled. You ma y need to disa ble the SQ func tion for one or more of
the following rea sons:
• SQ can be disabled to permit
operation with older Listen
products or other
1
2
You a re using your new Listen LT-800 with older version Listen
rec eivers tha t do not ha ve the SQ func tion.
manufacturers’ products
You a re using your new Listen LT-800 with equipment supplied
by other ma nufa c turers (Listen is the only ma nufa c turer using SQ
Tec hnology).
3
You expec t tha t end users will bring a nd use their own rec eivers
tha t don’t ha ve the SQ func tion.
NOTE: See page 8 to enable or disable SQ (Super Quiet).
Process Mode
Proc ess mode is used for Audio G a in C ontrol (AG C ). With the proc ess
mode ena bled, the LT-800 will a utoma tic a lly a djust for inc onsistent
signa l input levels by ra ising or lowering the signa l level a c c ordingly to
provide a c onsistent sound output level. This fea ture should be used in
a pplic a tions where a c onsistent sound level is importa nt a nd the input
levels va ry substa ntia lly. Typic a lly you would not wa nt to enga ge the
Proc ess Mode when a spea ker’s empha sis is c ritic a l to the messa ge
they a re c onveying.
Basic and Expanded Mode
In the defa ult Listen c ha nnel mode, only the most c ommonly used
c ha nnels a re a va ila ble. This is c a lled “Ba sic Mode”. When the LT-800
is in Ba sic Mode, “L/O” (loc k-out) will be displa yed on the LC D,
mea ning some tra nsmission c ha nnels a re una va ila ble. If the
c ha nnel needed is not a va ila ble in Ba sic Mode, a c c ess to a ll
tra nsmission c ha nnels is a c hieved in “Expa nded Mode”. To a c c ess
Expa nded Mode press a nd hold the c ha nnel selec t “down” button
while powering on the unit. To return to Ba sic Mode, repea t the sa me
proc ess of powering on the unit while holding the “down” button.
12
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RF Rec eption Maximization Strategies
For proper a nd dependa ble opera tion, Listen rec eivers need to rec eive a strong a nd c onsistent
signa l from the origina ting tra nsmitter. Note tha t on porta ble rec eivers the hea dset wire is the
rec eiving a ntenna . The following stra tegies should be used ma ximize this signa l:
1
When designing a nd insta lling your system, keep in mind tha t the loc a tion of both the
tra nsmitting a nd rec eiving a ntenna s is c ritic a l to ma ximize broa dc a st ra nge.
2
Elimina te or minimize obstruc tions between the tra nsmitting a nd rec eiving a ntenna .
3
Minimize the dista nc e between the tra nsmitting a nd rec eiving a ntenna s.
4
Move tra nsmitting a nd rec eiving a ntenna s a wa y from meta l or c onduc tive objec ts.
5
Pla c e the tra nsmitting a ntenna a s high a s possible.
6
Orient both tra nsmitting a nd rec eiving a ntenna s vertic a lly.
7
Position the RF Power switc h on the ba c k of the LT-800 to full RF Power, unless lower power is
nec essa ry (see pa ge 9).
8
Keep c oa xia l c a ble from tra nsmitter to a ntenna a s short a s possible.
CAUTION: When installing antennas, ensure the antenna is c lear of power lines.
C oa xia l c a ble, c onnec tors, a nd optiona l a ntenna mounting kits a re a va ila ble from Listen. See
Coaxial Cable
The a ntenna for the LT-800 c a n be mounted direc tly on the unit if desired. However, you ma y
find tha t the unit will provide better performa nc e when the a ntenna is loc a ted elsewhere. If you
pla n to mount the a ntenna in a different loc a tion other tha n the top of the unit, you must use
c a ble a nd c onnec tors ra ted a t 50 ohms. Although c a ble used for c a ble TV insta lla tions looks
simila r to this c a ble, it will not work with your Listen system.
If you need to run c a ble over a length grea ter tha n 50 feet for 216 MHz a pplic a tions or grea ter
tha n 100 feet for 72 MHz a pplic a tions or to ma ximize broa dc a st ra nge, Listen rec ommends tha t
you use RG -8 c a ble ra ther tha n RG -58. RG -8 is a lower loss c a ble, mea ning tha t more of your
signa l will rea c h the a ntenna .
Long c a ble runs c a n result in signa l degra da tion due to the “loss” c ha ra c teristic s of the c a ble.
When using RG -58 with a 72 MHz tra nsmitter, there is a n a vera ge* loss of 4 dB per 100 feet of
c a ble a nd a t 216 MHz using RG -58 a n a vera ge* loss of 8 dB per 100 feet of c a ble. (A 3dB loss
mea ns ha lf of your power ha s been lost.) However, it is better to suffer c oa xia l power loss tha n
to try to shoot your signa l through obsta c les! Obsta c les, espec ia lly meta l, c a n c rea te drop-outs
or reflec tions of your signa l tha t will result in poor listening c onditions.
*NOTE: There are many varieties of 50 ohm, RG-58 and RG-8 c ables. You may purc hase a
c able that is better or worse than this value. Please c hec k with the c able vendor or
manufac turer for exac t spec ific ations.
13
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Channel Selec tion
It is importa nt to c hoose c ha nnels tha t a re free from interferenc e to
a c hieve proper opera tion of your Listen equipment. This proc ess is tria l
a nd error. Before turning on the tra nsmitter, listen to the wide ba nd
c ha nnels on the rec eivers (lettered c ha nnels a t 72 MHz a nd c ha nnels
tha t sta rt with a “2” for 216 MHz when using a Listen rec eiver). Listen to
the a udio through the hea dphone or via the spea ker a nd c hoose a
c ha nnel with the lea st a mount of interferenc e. Unless you a re
interfa c ing with a n existing na rrowba nd tra nsmission system, a lwa ys
use a wide ba nd c ha nnel.
Wide Band Recommendation
Listen recommends that you always
use a wide band channel unless you
need to be compatible with existing
narrow band receivers from other
manufacturers. Wide band channels
have lower noise than their narrow
band counterparts.
At 72MHz
If you are using multiple channels follow this process:
1. Same Space If you a re using multiple tra nsmitters in the sa me spa c e,
the highest number of c ha nnels tha t will work simulta neously is six a t
72 MHz a nd three a t 216 MHz. With a ll of the tra nsmitters
The LT-800 at 72 MHz operates on 17
wide band channels and 40 narrow
band channels.
•
Letters= Wide Band Channels
(Example: E)
off, listen for interferenc e on a ll the wide ba nd c ha nnels with a
Listen rec eiver. Using the frequenc y c ompa tibility ta bles on pa ges
15-17, elimina te a ny c ha nnels tha t ha ve notic ea ble interferenc e.
Now c hoose the c ha nnels with the widest c ha nnel spa c ing. It is
rec ommended tha t a dja c ent c ha nnels be spa c ed a t lea st 300k Hz
a pa rt. If there is no interferenc e the following c ha nnels a re
rec ommended. For a 72 MHz system, use c ha nnels A, C , E, I, J
a nd H. For a 216 MHz system, use c ha nnels 2A, 2K a nd 2V.
•
Numbers= Narrow Band Channels
(Example: 32)
At 216MHz
The LT-800 at 216 MHz operates on
19 wide band channels and 38 nar-
row band channels.
•
“2” as left digit= Wide Band
Channel
(Example: 2C)
“1” and “3” as left digits= Narrow
Band Channels (Examples: 1A; 3R)
2. Distributed Spacing If you a re using tra nsmitters tha t a re distributed
over a la rge a rea , you c a n a c hieve more simulta neous broa dc a st
c ha nnels. However, it is c ritic a l tha t your rec eiver(s) be loc a ted a s
c lose to its tra nsmitter a s possible. You c a n use a dja c ent c ha nnels
(see frequenc y c ompa tibility ta bles (on pa ges 15-17) in this c a se
a s long a s the a dja c ent c ha nnel tra nsmitter is a t lea st 50% further
a wa y from the rec eiver tha n the origina l tra nsmitter. Exa mple: The
tra nsmitter for the rec eiver on c ha nnel E is 100 feet from the
rec eiver. The a dja c ent c ha nnel tra nsmitter on c ha nnel D should
be a t lea st 150 feet a wa y.
•
It is highly rec ommended tha t a fter c ha nnel selec tion ha s been
a c hieved, you loc k the c ha nnel so tha t it c a nnot be c ha nged by the
user. To a c c omplish LOC K on the LT-800, press the “UP” button for 3
sec onds. Repea t the proc ess to unloc k.
Notes in regard to using 72 MHz and 216 MHz systems:
1. 72 MHz is a sec onda ry frequenc y ba nd. This mea ns tha t other
tra nsmitters a re lic ensed to use these frequenc ies. Thus, you ma y
experienc e interferenc e from pa ging tra nsmitters a nd other types
of tra nsmissions. You will need to find a c lea r c ha nnel by listening
to a ll the wide ba nd c ha nnels.
2. 216 MHz is a prima ry frequenc y ba nd a nd no other types of
tra nsmissions a re a uthorized to use it. Thus, you will find the
highest proba bility of c lea r c ha nnels in this ba nd. However, you
ma y experienc e intermodula tion of the TV C ha nnel 13 a ura l c a rrier
if there is a c ha nnel 13 tra nsmitter in your a rea a nd you a re c lose
to the tra nsmitter. If you c a nnot find a c lea r c ha nnel in 216 MHz
ba nd due to c ha nnel 13, it is rec ommended tha t you switc h to
a 72 MHz system.
14
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72 MHz Compatibility Chart
Wideband frequencies are indicated in highlighted rows.
The highlighted channels also indicated those channels
available in the “basic” mode (default). All channels can
be accessed when in the “expanded” channel mode (see
page 8 for more information).
*Parenthesis indicate T35 and T20 narrowband.
15
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216 MHz Compatibility Chart
Frequency
MHz
Phonic
Ear
Light
Speed
N01
Listen
1A
2A
3A
1B
2B
3B
1C
2C
3C
1D
2D
3D
1E
Comtek
1
Phonak Williams Gentner
1
CSI
1
AVR
C01
216.0125
216.0250
216.0375
216.0625
216.0750
216.0875
216.1125
216.1250
216.1375
216.1625
216.1750
216.1875
216.2125
216.2250
216.2375
216.2625
216.2750
216.2875
216.3125
216.3250
216.3375
216.3625
216.3750
216.3875
216.4125
216.4250
216.4375
216.5125
216.5250
216.5375
216.5625
216.5750
216.5875
216.6125
216.6250
216.6375
216.6625
216.6750
216.6875
216.7125
216.7250
216.7375
216.7625
216.7750
216.7875
216.8125
216.8250
216.8375
216.8625
216.8750
216.8875
216.9125
216.9250
216.9375
216.9625
216.9750
216.9875
41
42
43
44
45
46
47
48
49
51
52
53
54
55
56
57
58
59
60
41
2
3
42
4
5
43
6
7
44
8
9
41
2
1
21
42
4
2
10
6
5
C05
43
22
23
44
8
A
B
C
D
E
3
4
14
2
9
C09
C12
N09
N12
2E
3E
1F
2F
45
10
11
46
12
13
47
14
15
48
16
17
49
18
21
51
22
23
52
24
25
53
26
27
54
28
29
55
30
31
56
32
33
57
34
35
58
36
37
59
38
39
60
40
45
24
25
46
12
13
47
26
27
48
16
17
49
18
61
29
62
28
52
64
65
53
81
82
54
68
69
55
83
84
56
72
73
57
76
85
58
86
77
59
88
79
60
80
5
6
11
7
3F
1G
2G
3G
1H
2H
3H
1J
2J
3J
1K
2K
3K
1L
7
F
8
15
18
3
C18
C21
N18
G
H
I
9
10
11
12
13
14
15
2L
3L
12
8
C24
C25
N64
1M
2M
3M
1N
2N
3N
1P
2P
3P
1R
2R
3R
1S
J
K
L
16
19
4
C29
C32
C33
N72
2S
3S
1T
2T
13
9
Wideband frequencies are indicated
in highlighted rows. The highlighted
channels also indicated those channels
available in the “basic” mode (default).
All channels can be accessed when in
the “expanded” channel mode (see page
8 for more information).
3T
1U
2U
3U
1V
2V
3V
C37
N77
N80
17
5
C39
C40
Wideband frequencies in highlighted rows.
16
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Phonak Frequenc y Chart
Frequency (MHz)
Listen
Phonak
216.012
216.025
216.037
216.062
216.075
216.088
216.113
216.125
216.137
216.162
216.175
216.188
216.213
216.225
216.238
216.262
216.275
216.287
216.312
216.325
216.338
216.363
216.375
216.387
216.412
216.425
216.438
216.512
216.525
216.537
216.562
216.575
216.588
216.613
216.625
216.637
216.662
216.675
216.688
216.713
216.725
216.738
216.762
216.775
216.787
216.812
216.825
216.838
216.863
216.875
216.887
216.912
216.925
216.938
216.963
1A
2A
3A
1B
2B
3B
1C
2C
3C
1D
2D
3D
1E
2E
3E
1F
1
41
2
21
42
4
5
43
22
23
44
8
9
45
24
25
46
12
13
47
26
27
48
16
17
49
18
61
29
62
28
52
64
65
53
81
82
54
68
69
55
83
84
56
72
73
57
76
85
58
86
77
59
88
79
2F
3F
1G
2G
3G
1H
2H
3H
1J
2J
3J
1K
2K
3K
1L
2L
3L
1M
2M
3M
1N
2N
3N
1P
2P
3P
1R
2R
3R
1S
2S
3S
1T
2T
3T
1U
2U
3U
1V
Wideband frequencies are indicated in highlighted
rows. The highlighted channels also indicated those
channels available in the “basic” mode (default). All
channels can be accessed when in the “expanded”
channel mode (see page 8 for more information).
216.975
216.988
2V
3V
60
80
17
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LT-800 Troubleshooting
Troubleshooting
The LT-800 has no power
Ma ke sure the LA-207 power supply is c onnec ted to a power sourc e a nd is c onnec ted to the
ja c k ma rked “Power Input”. Ma ke sure the POWER button is pressed in.
There is no audio or the audio level is too low
Ma ke sure tha t your a udio sourc e is properly c onnec ted to Input 1 a nd/or Input 2. The Input 1
or Input 2 switc hes must be in the c orrec t position for the a ppropria te input level. For exa mple:
if you a re using the output of a mixer on Input 2, the switc h should be in the -10dBu position.
If it were to be in the +10dBu position, the level would be too low. Also, c hec k the Input knob
to ensure it is properly a djusted. You should be a ble to see the VU meter deflec t on Input 1
or Input 2 c orresponding with the input level of the a udio sourc e. You c a n listen to the a udio
sourc e by c onnec ting a hea dset to the front pa nel ja c k a nd a djusting the Monitor
volume c ontrol.
If the level of a udio into the tra nsmitter is low a nd c a n’t be c orrec ted using the level input
switc hes, the a udio proc essor c a n be turned on to boost the signa l (see pa ge 8 to set, pa ge 12
for desc ription of Proc ess Mode).
The audio is distorted
C hec k to ma ke sure you ha ve the input level selec t switc hes in the proper position. You ma y
be providing too muc h a udio level for the input sta ge to ha ndle. Ma ke sure the SQ mode is set
c orrec tly on both the LT-800 a nd the rec eivers you a re using. If your rec eivers do not ha ve SQ,
ma ke sure the SQ mode is turned off (see pa ge 8).
There is hum in the audio
Ma ke sure you ha ve properly grounded the a udio sourc e to the LT-800. C hec k the c onnec tions
from the a udio sourc e to the LT-800. If you c a n, try to use a ba la nc ed a udio sourc e - this will
reduc e the c ha nc e of c rea ting hum. C onnec t a ground wire from the LT-800 to ground a nd/or
to the ground of the sourc e a udio.
There is a tone
The Test Tone button ha s been pressed (its LED light is on). Push the Test Tone button to turn off
the tone.
The Audio Input 1 sounds “tinny”
If you a re using a n unba la nc ed a udio sourc e, ma ke sure Pin 3 on the XLR or the ring on the
¼” plug is grounded (see pa ge 9).
I c annot pic k up the signal on the rec eiver
C hec k to ma ke sure the rec eiver a nd the tra nsmitter a re using the sa me frequenc y ba nd
(i.e. 72 MHz or 216 MHz) a nd tha t they a re on the sa me c ha nnel. Ma ke sure the LT-800 ha s
a n a ntenna c onnec ted. Ensure tha t the rec eiver ha s a n a ntenna (for porta ble produc ts the
hea dset is the rec eiving a ntenna ).
I c an pic k up the signal on the rec eiver, but it sounds like it’s not tuned in
C hec k to ma ke sure the tra nsmitter a nd rec eiver a re on exa c tly the sa me c ha nnel. It’s a good
idea to loc k the c ha nnels onc e they ha ve been set. To loc k the LT-800, press the UP button for
3 sec onds (see pa ge 10).
18
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LT-800 Troubleshooting (c ont.)
Troubleshooting
I’m using another brand of rec eiver - how do I tell whic h c hannel to use
Refer to Listen’s Frequenc y C ompa tibility Ta bles (pa ges 15-17). Adjust Listen’s tra nsmitter to the
sa me frequenc y a s the other ma jor bra nd. Sinc e Listen produc ts c a n a c c ess 57 c ha nnels, they
will most likely rec eive on the sa me fixed c ha nnel or c ha nnels of other ma jor bra nds. If you a re
using a nother bra nd of rec eiver, ma ke sure you ha ve turned off the SQ fea ture on the Listen
produc t(s).
There is not suffic ient range
First ma ke sure tha t the rec eivers you a re using a re opera ting properly, then ma ke sure tha t
you ha ve a n a ntenna c onnec ted either to the top of the LT-800 tra nsmitter or c onnec ted to
the ba c k of the unit (but not both!). The a ntenna should be a s high a s possible a nd free of
obsta c les. In a ddition ma ke sure you a re using the c orrec t a ntenna type for your unit. You
might wa nt to use a remote a ntenna (provided by Listen) tha t c a n be mounted on a ma st
or wa ll. Try using different frequenc ies to find one with less interferenc e.
There is interferenc e in my transmission
Ensure tha t the tra nsmitter a nd rec eivers a re on the sa me c ha nnel. Verify tha t there a re no
other tra nsmitters on the sa me c ha nnel or a c lose c ha nnel to the one exhibiting interferenc e.
Try different c ha nnels until you find a c lea r c ha nnel. If this does not work, try a different
frequenc y ba nd (i.e. if you a re using 72 MHz, try 216 MHz or vic e versa ). Plea se c onta c t Listen
support for a ssista nc e a nd a return a uthoriza tion (RMA) number to exc ha nge produc t for
a lterna te frequenc y equipment.
End users are adjusting the unit
First, loc k the c ha nnel by pressing a nd holding the c ha nnel selec t UP button for 3 sec onds.
C onsider removing the Input, Mix Level a nd C ontour knobs. You c a n order a ra c k mount kit
from Listen whic h offers a sec urity c over tha t will limit a c c ess to the unit.
I am using other manufac turers’ rec eivers and the sound is distorted
The rec eiver is proba bly not designed to ha ndle the +25 kHz devia tion of the Listen tra nsmitter.
This c a n be c orrec ted by turning the Mix Level knob down. Another possibility is tha t you ha ve
ena bled the SQ func tion of the LT-800, a nd this fea ture is not a va ila ble in other c ompa nies’
produc ts. You will need to disa ble SQ in this event (see pa ge 8).
If you a re using Phona k rec eivers, the tra nsmitter is c a pa ble of opera ting in the Phona k mode
(plea se refer to pa ge 8).
Several transmitters are operating in the same environment
For this, you’ll need to c hoose your tra nsmitting frequenc ies c a refully. See pa ge 15-17 for
more deta ils.
Can I have two antennas c onnec ted to my transmitter
No. The LT-800 tra nsmitter c a n use only one a ntenna c onnec tion a t a time. You ma y c onnec t
either a top mount a ntenna through the top a ntenna port, or a remote a ntenna c onnec ted to
the BNC c onnec tion on the rea r of the unit. If multiple a ntenna e a re simulta neously c onnec ted
to both ports the tra nsmitter will ha ve extremely poor broa dc a st performa nc e a nd ra nge.
19
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Complianc e Notic e & FCC Statement
Compliance Notice
This devic e c omplies with pa rt 15 of the FC C Rules. Opera tion is subjec t to the following two c onditions:
(1) These devic es ma y not c a use ha rmful interferenc e, a nd (2) these devic es must a c c ept a ny
interferenc e rec eived, inc luding interferenc e tha t ma y c a use undesira ble opera tion.
Listen’s LT-800 Transmitter (216 MHz only)
Listen’s LT-800 tra nsmitter is a uthorized by rule under the Low Power Ra dio Servic e (47 C .F.R. Pa rt 95) a nd
must not c a use ha rmful interferenc e to TV rec eption or United Sta tes Na vy SPASUR insta lla tions. You do
not need a n FC C lic ense to opera te these tra nsmitters. These tra nsmitters ma y only be used to provide:
a uditory a ssista nc e to persons with disa bilities, persons who require la ngua ge tra nsla tion, or persons in
educ a tiona l settings; hea lth c a re servic es to the ill; la w enforc ement tra c king servic es under a greement
with a la w enforc ement a genc y; or a utoma ted ma ritime telec ommunic a tions system (AMTS) network
c ontrol c ommunic a tions. Two-wa y voic e c ommunic a tions a nd a ll other types of uses not mentioned
a bove a re expressly prohibited.
This devic e must be insta lled by a tra ined a udio professiona l or c ertified dea ler of Listen. The user
c a n’t ma ke a ny modific a tions to the unit without expressed written c onsent of Listen Tec hnologies
C orpora tion. Any modific a tions ma de will void the FC C c omplia nc e, Listen wa rra nty a nd the users
a uthority to opera te Listen’s equipment.
FCC Statement
This equipment ha s been tested a nd found to c omply with the limits for a c la ss B digita l devic e, pursua nt
to pa rt 15 of the FC C Rules. These limits a re designed to provide rea sona ble protec tion a ga inst ha rmful
interferenc e in a residentia l insta lla tion. This equipment genera tes, uses a nd c a n ra dia te ra dio frequenc y
energy a nd if not insta lled a nd used in a c c orda nc e with the instruc tions, ma y c a use ha rmful interferenc e
to ra dio c ommunic a tions. However, there is no gua ra ntee tha t interferenc e will not oc c ur in a pa rtic ula r
insta lla tion. If this equipment does c a use ha rmful interferenc e to ra dio or television rec eption, whic h c a n
be determined by turning the equipment off a nd on, the user is enc oura ged to try to c orrec t the
interferenc e by one or more of the following mea sures:
Reorient or reloc a te the rec eiving a ntenna .
Inc rea se the sepa ra tion between the equipment a nd rec eiver.
C onnec t the equipment into a n outlet on a c irc uit different from tha t to whic h the rec eiver is
c onnec ted.
C onsult the dea ler or a n experienc ed ra dio/TV tec hnic ia n for help.
This equipment ha s been c ertified to c omply with the limits for a c la ss B c omputing devic e, pursua nt to
FC C a nd IC Rules. In order to ma inta in c omplia nc e with FC C a nd IC regula tions, shielded c a bles must
be used with this equipment. Opera tion with non-a pproved equipment or unshielded c a bles is likely to
result in interferenc e to ra dio a nd TV rec eption. The user is c a utioned tha t c ha nges a nd modific a tions
ma de to the equipment without the a pprova l of ma nufa c turer c ould void the user’s a uthority to opera te
this equipment.
20
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Warranty & Contac ting Listen
Warranty
Listen Tec hnologies C orpora tion (Listen) wa rra nts its tra nsmitters a nd rec eivers (LT-82, LT-700, LT-800, LR-100, LR-42,
LR-44, LR-300, LR-400, LR-500, LR-600) to be free from defec ts in workma nship a nd ma teria l under norma l use a nd
c onditions for the useful lifetime of the produc t from da te of purc ha se.
Listen wa rra nts its Sta tiona ry IR Ra dia tors (LA-140) to be free from defec ts in workma nship a nd ma teria l under norma l
use a nd c onditions for three yea rs from the da te of purc ha se.
Listen wa rra nts its Noise C a nc eling Mic rophone (LA-270) to be free from defec ts in workma nship a nd ma teria l under
norma l use a nd c onditions for one yea r from da te of purc ha se.
Listen wa rra nts its C ha rging/C a rrying C a ses (LA-306, LA-311, LA-313, LA-317, LA-318, LA-319, LA-320, LA-321, LA-322,
LA-323, LA-324, LA-325) to be free from defec ts in workma nship a nd ma teria l under norma l use a nd c onditions for
one yea r from da te of purc ha se.
All other produc ts a nd a c c essories a re wa rra nted for 90 da ys from da te of purc ha se.
This wa rra nty is only a va ila ble to the origina l end purc ha ser of the produc t a nd c a nnot be tra nsferred. Wa rra nty is
only va lid if wa rra nty c a rd ha s been returned within 90 da ys of purc ha se. This wa rra nty is void if da ma ge oc c urred
bec a use of misuse or if the produc t ha s been repa ired or modified by a nyone other tha n a fa c tory a uthorized
servic e tec hnic ia n. Wa rra nty does not c over norma l wea r a nd tea r on the produc t or a ny other physic a l da ma ge
unless the da ma ge wa s the result of a ma nufa c turing defec t. Listen is not lia ble for c onsequentia l da ma ges due to
a ny fa ilure of equipment to perform a s intended. Listen sha ll bea r no responsibility or obliga tion with respec t to the
ma nner of use of a ny equipment sold by it. Listen spec ific a lly disc la ims a nd nega tes a ny wa rra nty of merc ha nta bility
or fitness of use of suc h equipment inc luding, without limita tion, a ny wa rra nty tha t the use of suc h equipment for a ny
purpose will c omply with a pplic a ble la ws a nd regula tions. The terms of the wa rra nty a re governed by the la ws of the
sta te of Uta h.
In the first ninety da ys a fter purc ha se, a ny defec tive produc t will be repla c ed with a new unit. After 90 da ys, Listen
will, a t its own disc retion either repa ir or repla c e tra nsmitters a nd rec eivers with a new unit or a unit of simila r type
a nd c ondition. Produc t tha t is not c overed under wa rra nty sha ll be repa ired or repla c ed with a unit of simila r type
a nd c ondition ba sed on a fla t fee. C onta c t Listen for deta ils.
This limited wa rra nty, pric es a nd the spec ific a tions of produc ts a re subjec t to c ha nge without notic e.
Contacting Listen
If tec hnic a l servic e is needed, plea se c onta c t Listen. Pre-a uthoriza tion is required before returning Listen produc ts.
If produc ts were da ma ged in shipment, plea se c onta c t the c a rrier, then c onta c t Listen for repla c ement or repa ir
requirements pa ya ble by the c a rrier.
Listen’s c orpora te hea dqua rters a re loc a ted in Bluffda le, Uta h U.S.A. a nd a re open Monda y through Frida y, 8a m to
5pm Mounta in Time.
Listen Tec hnologies G mbH
14912 Herita gec rest Wa y
Bluffda le, Uta h 84065-4818
+1.801.233.8992
Ja sminstr.16, 90522 Obera sba c h, G erma ny
Europe
+49 911 955 159 0
Fa x
+49 911 955 159 40
North Americ a
+1.800.330.0891
+1.801.233.8995
support@listentec h.de
www.listentec h.de
fa x
support@listentec h.c om
www.listentec h.c om
21
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Optional Ac c essories
Antenna Accessories
LA-101
Helic a l Top Mounted Antenna
(72 MHz)
LA-102
Telesc oping Top Mounted
Antenna (216 MHz)
LA-106
Telesc oping Top Mounted
Antenna (72 MHz)
LA-123
90˚ Helic a l Antenna
(72 MHz)
LA-107
G round Pla ne Remote Antenna
(216 MHz)
LA-122
Universa l Antenna Kit
The single solution for all of
your indoor remote antenna
needs. Includes: 72 and 216 MHz
components; flexible and rigid
dipoles and monopole radials;
hardware for multiple mount-
ing configurations; and 25 feet
(7.6m) of RG-58 coax cable.
LA-124
90˚ Helic a l Antenna
(216 MHz)
LT-800 Rack Mount Accessories
LA-125 (72 MHz) a nd LA-126 (216 MHz)
Antenna Kit for Ra c k Mount
LA-326
Universa l Ra c k Mounting Kit
Inc ludes c omponents for single a nd dua l ra c k
c onfigura tion a nd a sec urity c over
NOTE: Rac k mounted units c annot use the LA-106,
LA-102 or LA-101 top mounted antenna.
22
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Optional Ac c essories (c ont.)
Cable & Connectors Accessories
LA-112
LA-113
RG -8 50 Ohm Low-Loss
C oa xia l C a ble (per ft.)
LA-127
RG -58 BNC C onnec tor
RG -58 50 Ohm
C oa xia l C a ble (per ft.)
LA-390
LA-128
RG -8 BNC C onnec tor
LA-391
RG -8 50 Ohm Prea ssembled
C oa xia l C a ble (per ft.)
RG -58 50 Ohm Prea ssembled
C oa xia l C a ble (per ft.)
Microphone Accessories
LA-270
LA-262
LA-274
Ha nd-Held
Mic rophone
La va lier Mic rophone
Noise C a nc eling
Over-the-Hea d
Mic rophone
Mic rophone
LA-276
C olla r
Mic rophone
LA-277
C onferenc ing
Mic rophone
LA-280
A-279
Over-the-Ea r Mic rophone
Presenta tion Style
¼ in. to 3.5 mm
Mic rophone
Ada pter for
LT-800/LT-82
Behind-the-Hea d
Mic rophone
NOTE: To use Listen mic rophones you must use a c onverter (LA-280) to adapt the 3.5 mm c onnec tion to a 1/4” phono c onnec tion.
23
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Notes
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Notes
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Notes
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Listen Tec hnologies C orpora tion
14912 Herita gec rest Wa y
Bluffda le, Uta h 84065-4818, U.S.A.
+1.801.233.8992
North Americ a
+1.800.330.0891
+1.801.233.8995
fa x
www.listentec h.c om
Printed in the United Sta tes of Americ a
© 2008 Listen Tec hnologies C orpora tion® All Rights Reserved 011108
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