ARG ARG-TX72M User manual

Thanks for purchasing our 72MHz assitive listening system. It helps millions of people
hear focused audio in places where sound matters most, especially in school and
churches where concentrations are needed. The 72MHz mini wireless audio system
allows multi-transmitters and multi-receivers to be used in the same field. Simply
plug the microphone or other audio sources into the MIC jack on the transmitters.
The person holding the receiver can choose the channel that they want to hea r and
it can amplify the sound loud enough. They are very small, light-weighted and
user-friendly. All of our products re designed to provide many years of reliable
service.
We are commited to provide the best assistive listening system to the users who
have hearing problem.
This manual contains basic product information to ensure trouble free opera tion so
please take time to read through this manual thoroughly before using your new
assitive listening system.
Every Word………Every Sound……..Heard, Understood
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.

FCC Compliance Statement
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. End user must follow the specific operating instructions
for satisfying RF exposure compliance. This transmitter must not be co-located or
operati ng in conjunction with any other antenna or transmitter.
The portable device is designed to meet the requirements for exposure to radio
waves established by the Federal Communications Commission (USA). These
requirements set a SAR limit of 1.6 W/kg averaged over one gram of tissue. The
highest SAR value reported under this standard during product certification for use
when properly worn on the body

Operations
ARG-TX72M Transmitter Diagram
Transmitter Programming Instructions
POWER UP
Switch the transmitter to ON position. The display will show t he volume level for a seond then
change to the Channel Number. The backlit turns off automatically after ten seconds.
MUTE
Press and hold the SET button for one second to mute the transmitter. Do it again to unmute.
When it is muted, there is a muted icon on the display and the channel number flashes. When it
is unmuted, the icon disappears and the channel number becomes still.
VOLUME/CHANNEL SETUP
In normal mode, press the “-“ button to see the c urrent volume level and pre ss the “+” button to
see the current channel number.
Press and hold the “SET” button and turn the transmitter to ON position. T he lock ic on
disappears from the display. Press the “ SET” button to adjust the volume level (01-02), and pre ss
the “-” or “+“ buttons to scroll through the channels. The display does auto-lock ten seconds after
operations.

Troubleshooting
1) When there is STATIC INTERFERENCE or NO SOUND, please go through the following
procedures to e liminate the problems.
a. Make sure that the transmitter and receiver are set on the same channel.
b. Check the Mute setting on the transmitter.
c. Check whether two transmitters are set at the same channel. Avoid two transmitters to
be on the same channel.
d. Sound level on the line input source may be too high.
2) When a NOISY SOUND occurs, please go through the following procedures to eliminate the
problems.
a. Make sure that the transmitter and receiver are within the distance range.
b. Make sure that the sound leve l on the transmitter and audio sources are set at a
reasonable level.
c. Try changing the transmitter to a different frequency to see if the sound quality
improves.
In case the proble m persists, please consult your dealer or ARG.
Repairs
In the event that there is need for a repair, please contact your dealer or ARG for a Return
Authorization.
Technical Specifications
Frequency Range: 72.1-72.9MHz, 74.7MHz, 75.3 – 75.9MHz
Modulation: Wide-band FM, 75 kHz pk
Frequency Response: 200Hz to 13KHz, ±3 dB at 1% max. THD
SNR: 70dB (typical) transmitted
72MHz Mini Transmitter
Audio Input: 3.5mm mono Mic /Line
Power consumption: 3.7V40mAH
Operation hours: 15 hours
Charging time: 3 hours, smart charging
We ig ht : 35g

FREQUENCY CHART
CH FREQ
1 72.1MHz
2 72.5MHz
3 72.9MHz
4 75.7MHz
5 74.7MHz
6 75.3MHz
7 75.9MHz
8 72.2MHz
9 72.3MHz
10 72.4MHz
11 72.6MHz
12 72.7MHz
13 72.8MHz
14 75.4MHz
15 75.5MHz
16 75.6MHz
17 75.8MHz