Williams AV T2800 User manual

T2800
863 MHz FM Base Station Transmitter - Europe
USER MANUAL
For use with Williams AV R2863 Receivers.
MAN 184E-1122

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T2800 863 MHz Transmitter - Europe | User Manual
Recycling Instructions
Help Williams AV protect the environment!
Please do not dispose of equipment or used batteries in the household trash. Take the
equipment to an electronics recycling center or return to the factory. Take batteries to a retail or
community recycling location.
Safety Warnings
WARNING! To reduce the risk of fire or electric shock, do not expose the system to rain or
moisture. Do not use this apparatus near water. The system should not be exposed to dripping or
splashing, and objects filled with liquids such as beverages should not be placed on the charger.
Clean only with a dry cloth.
Servicing or attempting to service this device will void the warranty
Refer servicing to qualified personnel. Servicing is required when the system has been damaged in any way: if
liquid has been spilled or objects have fallen into the unit, if the unit has been exposed to moisture, if the unit does
not operate normally, or if the unit has been dropped.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produces heat.
Use only attachments/accessories specified by the manufacturer.
Unplug the unit during lightning storms or when unused for long periods of time.
Be advised that different operating voltages require the use of different types of line cord and attachment plugs.
Check the voltage in your area and use the correct type.
Use only the power supply provided by Williams AV. Other power supplies may have similar specifications, but
may not be equivalent in emissions ratings, in-rush current, etc. Use of an unapproved power supply may leave the
device partially or completely inoperable, and will void the warranty.
This apparatus has been designed with class-1 construction and must be connected to a main socket outlet with a
protective ground connection (the third grounding prong).
Protect the power cord from being walked on or pinched, particularly at plugs, receptacles, and near the power jack
on the charger.
This apparatus must be grounded.
The MAINS plug or an appliance coupler is used as the disconnect device, so the disconnect device should remain
readily operable.
System Overview
Thank you for purchasing the T2800, 863 MHz FM Base Station Transmitter. This transmitter was designed for
Europe and other areas where 863 MHz is the permitted frequency range for hearing assistance. This transmitter is
compatible with R2863 Receivers.
Much like a miniature radio station, the T2800 broadcasts a speaker’s voice, pre-recorded audio program or live
audio over a channel in the 863 MHz FM frequency band. This hearing assistance system helps large or small groups
overcome background noise, and distance, to clearly hear the speaker or audio program.
The T2800 features Mic Inputs, Line Inputs, and a built-in MP3 player for pre-recorded content. A dual-color Thin-
Film-Transistor (TFT) display shows settings for transmit channel, transmitter locked, volume, record volume, mode,
cycle (repeat), total number of audio files and current audio file playing.
Features
• (2) 3.5mm mono Mic Inputs
• (2) RCA Line Level Inputs
• (1) USB Flash Drive Slot
• (1) Micro SD Card Slot
• Dual-color OLED Display Screen with Audio Level Meter
• Built-In MP3 Player
• 16 FM Channels between 863 - 865 MHz
• Rack-mountable (1/2 width, 1 RU high) with the RPK 001
rack mount kit
• Remote Antenna ANT 036 is available

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T2800 863 MHz Transmitter - Europe | User Manual
TRANSMITTER APPLICATIONS
• House of Worship
• Hearing Assistance
• Conference Rooms
IMPORTANT NOTES ABOUT FRONT DISPLAY SCREEN CARE
The Front Display should be cleaned with a clean, damp microfiber cloth only. This will prolong the life and legibility
of the screen. Do not use glass cleaner, or any other type of cleaner, or cloth/paper towel on the screen.
The T2800 should be turned off when not in use to maximize the life of the screen pixels.
Wiring and Connections
FRONT VIEW
!!
On/O Switch Display Lock
Stop/
Mode
Play/Pause Forward
Backward
Antenna jack (female SMA)
Micro SD
Card Slot
Line Inputs
(RCA)
Microphone Inputs (3.5mm) DC Power In
USB Flash
Drive Slot
Not
Used
Controls and Features
BACK VIEW
!!
On/O Switch Display Lock
Stop/
Mode
Play/Pause Forward
Backward
Antenna jack (female SMA)
Micro SD
Card Slot
Line Inputs
(RCA)
Microphone Inputs (3.5mm) DC Power In
USB Flash
Drive Slot
Not
Used

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T2800 863 MHz Transmitter - Europe | User Manual
DISPLAY
Mode LOCK
Play/Pause Forward
Backward
VOL: 22 REC: 20
MODE: MP3
CYCLE: ALL CYCLE
TotalNum: 061
CurrenNum: 003
TXCH: 2
Transmit Channel
Lock Symbol
Audio/Output Level
Audio/Output
Level Meter
Current Mode
Cycle (Repeat)
Mode for MP3’s
Total number of MP3 files
found on flash card
Current
MP3 file
playing
Not
Used
Mic/Rec Lock
Mode/
Stop
Operating Instructions
The transmitter can broadcast programs from a live mic, line level input, MP3 audio files from an SD Card or
USB Flash Drive, as well as record from the MIC inputs and play back the recording.
LIVE MICROPHONE
1. Make sure the unit is turned OFF.
2. Connect a microphone with a 3.5 mm plug into one of the 3.5 mm jacks on the rear of the T2800. Note:
these two jacks are mixed internally, so two speakers can use individual microphones at the same time and
both will be heard by the audience.
3. Turn the unit on.
4. Change the input to Microphone:
a. Push and hold the Lock button until the lock symbol turns off.
b. Push the mode button repeatedly until MODE on the display begins blinking.
c. Use the left and right arrow to change the Mode to MIC.
d. Push-and-hold the LOCK button until the lock symbol turns on.
5. With a R2863 receiver, tune to the channel displayed on the front of the T2800, for example “TX: 01”.
6. Have a listener use the receiver while someone speaks into the microphone. Determine if the level is too
high or too low*.
7. If the transmitter level needs to be adjusted, push-and-hold the LOCK button to turn it off. Then repeatedly
push the MODE button until VOL: is flashing on the display. Use the left and right arrows to adjust the
volume of the transmitter to an acceptable level.
LINE LEVEL AUDIO PROGRAM
1. Make sure the unit is turned OFF.
2. Connect the line-level source to the RCA jacks on the rear of the T2800. NOTE: The L and R audio is
combined into one mono channel that will be heard by the audience.
3. Turn the unit on.
4. Change the input to the RCA Line Level jacks:
a. Push and hold the Lock button until the lock symbol turns off.
b. Push the mode button repeatedly until MODE on the display begins blinking.
c. Use the left and right arrows to change the Mode to LINE.
d. Push-and-hold the LOCK button until the lock symbol turns on.
5. With a R2863 receiver, tune to the channel displayed on the front of the T2800. For example, “TX: 01”.
6. Have a listener use the receiver and start the audio program playing on the source device. Determine if the
level is too high or too low*.
7. If the transmitter level needs to be adjusted, hold the LOCK button to turn it off. Then repeatedly push the

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T2800 863 MHz Transmitter - Europe | User Manual
MODE button until “VOL:” is flashing on the display. Use the left and right arrows to adjust the volume of the
transmitter to an acceptable level.
MP3 PLAYER
1. Make sure the unit is turned OFF.
2. Insert a Micro SD card, or a USB Flash Drive,into the appropriate port.
3. Turn the unit on.
4. Change the input to the MP3 Player:
a. Push and hold the Lock button until the lock symbol turns off.
b. Push the mode button repeatedly until MODE on the display begins blinking.
c. Use the left and right arrows to change the Mode to MP3.
d. Push-and-hold the LOCK button until the lock symbol turns on.
5. Push the Play button on the T2800 to begin the MP3 player playing. The audio meter on the right should
begin pulsing with the audio.
6. Using the Mode button, set the Cycle:
a. All Cycle: continuously plays all MP3 files going from 001 to the last file, then starts at 001 again.
b. Single Play: Plays the current (CurreNum) MP3 file once, then stops.
c. Single Cyc: Plays all of the MP3 files from 001 to the last file, then stops.
7. With a R2863 receiver, tune to the channel displayed on the front of the T2800, for example “TX: 01”.
8. Have a listener use the receiver. Determine if the level is too high or too low*.
9. If the transmitter level needs to be adjusted, push-and-hold the LOCK button to turn it off. Then repeatedly
push the MODE button until VOL is flashing on the display. Use the left and right arrows to adjust the volume
of the transmitter to an acceptable level.
*NOTE: If the audio level meter pulses and stays mostly in the red, the transmitter volume may need to be lowered. The peaks of
a persons voice (like the “p” sound) may take the meter into the red, but most of the spoken audio should be in the blue
range of the meter. Another way to know if the level is too high is if the speaker’s voice sounds distorted or not clear when
they are speaking at the recommended distance from the microphone. Adjust the audio so that the speaker’s voice is loud
and clear without distortion.

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T2800 863 MHz Transmitter - Europe | User Manual
Specifications
Dimensions: 21.1 cm W x 11.7 cm H x 16.5 cm D (8.3” x 1.8” x 6.5”) (Depth includes power cord and antenna)
Shipping Weight: 1.36 kg (3 lbs)
Color: Black with white legends
Power: AC: 100 to 240 VAC, 50-60 Hz
DC: 9 VDC, 80 mA current consumption
Power Switch: Rocker, front panel
Temperature Range: Operating: 0°C to 40°C (+32°F to 104°F)
Storage: -20°C to 70°C (-4°F to +158°F)
Frequency Range: 863 - 865 MHz
Compatible Receiver: R2863
Channel Frequencies: Selectable, 16 channels, 863 – 865 MHz:
Ch. 1 863.075 Ch. 5 863.575 Ch. 9 864.075 Ch. 13 864.575
Ch. 2 863.200 Ch. 6 863.700 Ch. 10 864.200 Ch. 14 864.700
Ch. 3 863.325 Ch. 7 863.825 Ch. 11 864.325 Ch. 15 864.825
Ch. 4 863.450 Ch. 8 863.950 Ch. 12 864.450 Ch. 16 865.000
Non-interfering group channels: 1, 4, 8, 11, 16. Can be used simultaneously for up to 5 groups.
Max. Carrier Power: 7.88dBm
Frequency Response: 20 Hz - 16 kHz
Signal-to-Noise Ratio: 80 dB
Display: Large, Red: Lock symbol, TX CH: 0-100
Large, Blue: Vol: 1-36, Rec: 1-23
Small, Blue: Mode: Microphone Input / Line Input / MP3 Player
Cycle: All Cycle / Random Play / Single Play / Single Cycle
Menu Push Buttons: Mic/Record (not used), Mode/Stop, Lock, Play/Pause, Back (<), Forward (>)
Line Input: Two RCA jacks; L and R, summed internally to mono
Microphone Input: Two 3.5 mm jacks, summed internally to mono
Antenna Connector: Female SMA
Approvals: CE, RoHS3 and WEEE
Warranty: 2 Years
Hereby, Williams AV declares that the FM transmitter is in compliance with Directive 2014/53/EU
and other Union harmonization as applicable.
Additional Documentation
The full text of the EU declaration of conformity (and other technical documenation) is available by
contacting Williams AV at the following email address: [e-mail]

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T2800 863 MHz Transmitter - Europe | User Manual
Troubleshooting
No Sound:
• Check that the power supply is plugged into the AC outlet, the power switch is on, and the front display is on.
• Check the Mode on the front display to make sure the intended input is selected.
• If using the Line Level inputs, make sure the device plugged into these jacks is playing.
• With any source being used, the audio level display meter should be pulsing with the audio. If it is not, the transmitter will not be
broadcasting anything.
• Make sure the receiver is tuned to the same channel as shown on the front of the transmitter.
• Make sure the volume on the receiver is high enough to hear the audio.
• When playing MP3 files, make sure the Cycle is set to repeat correctly. If it plays one file and stops, it is probably set to Single
Play.
2 Year Warranty
Williams AV, a brand owned by Williams AV, products are engineered, designed and manufactured under
carefully controlled conditions to provide you with many years of reliable service. Williams AV warrants the T2800
863 MHz FM Transmitter against defects in materials and workmanship for 2-years. During the first two years
from the purchase date, we will promptly repair or replace the T2800 863 MHz FM Transmitter.
Microphones, earphones, headphones, batteries, cables, carry cases, and all other accessory products carry a
90-day warranty.
WILLIAMS AV HAS NO CONTROL OVER THE CONDITIONS UNDER WHICH THIS PRODUCT IS USED. WILLIAMS
AV, THEREFORE, DISCLAIMS ALL WARRANTIES NOT SET FORTH ABOVE, BOTH EXPRESS AND IMPLIED,
WITH RESPECT TO THE T2800 863 MHZ FM TRANSMITTER, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. WILLIAMS AV SHALL NOT
BE LIABLE TO ANY PERSON OR ENTITY FOR ANY MEDICAL EXPENSES OR ANY DIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES CAUSED BY ANY USE, DEFECT, FAILURE OR MALFUNCTION OF THE PRODUCT,
WHETHER A CLAIM FOR SUCH DAMAGES IS BASED UPON WARRANTY, CONTRACT, TORT OR OTHERWISE. THE
SOLE REMEDY FOR ANY DEFECT, FAILURE OR MALFUNCTION OF THE PRODUCT IS REPLACEMENT OF THE
PRODUCT. NO PERSON HAS ANY AUTHORITY TO BIND WILLIAMS AV TO ANY REPRESENTATION OR WARRANTY
WITH RESPECT TO THE T2800 863 MHZ FM TRANSMITTER. UNAUTHORIZED REPAIRS OR MODIFICATIONS WILL
VOID THE WARRANTY.
The exclusions and limitations set out above are not intended to, and should not be construed so as to
contravene mandatory provisions of applicable law. If any part or term of this Disclaimer of Warranty is held to
be illegal, unenforceable or in conflict with applicable law by a court of competent jurisdiction, the validity of the
remaining portions of this Disclaimer of Warranty shall not be affected, and all rights and obligations shall be
construed and enforced as if this Limited Warranty did not contain the particular part or term held to be invalid.
If you experience difficulty with your system, call Toll-Free for Customer Assistance:
1-800-843-3544 (U.S.A.) or [phone] (International)
*For a Complete Warranty Statement go to: https://williamsav.com/support/warranty-product-registration/
If it is necessary to return the system for service, your Customer Service Representative will give you a Return
Authorization Number (RA) and shipping instructions.
Pack the system carefully and send it to:
Williams AV
Attn: Repair Dept.
10300 Valley View Road
Eden Prairie, MN 55344

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MAN 184E-1122