DEAR ARG CUSTOMER,
Congratulations and thank you for purchasing AR G’s 900MHz stationary transmitter. This device is
easy to mount, convenient to operate with clear display and provi des h ig h-fidelity audio
enjoyment. All of ARG’s high quality products are designe d to provi de man y yea rs of reliable
service; they are uncom plicated to use so anyone can operate them with ease and confidence. I
am certain that after using y our newly purchased product you will join ARG’s long list of satisfied
customers.
This manual contains basic pro duct infor mat ion to ensure trouble free operation, so please take
time to read through this manual thorough ly before usi ng . If for any reason you have additi onal
questions yo u can call o ur headquarters toll-free at (888 )-468-4552 and talk to one of our
professi onal sales team members who wi ll be happ y to he lp y ou M onday thro ugh Fri day between
the hours of 8:00AM and 5:00 PM Central Standard Time; you can al so email ARG at
info@argaudio. com or vi sit our website at www.argaudio. com for additional resources and
product options.
Everyone at ARG is firm ly committed to our motto, which isn’t just a tag line, it’s our a ssurance
that ARG’s high quality pro ducts w ill meet y our expectat ions f or many years to come.
Every word.. .every sound…HEARD, UNDERSTOOD.
Again, on behalf of every one at ARG, Thank you!
Rick Allerdings, President
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two con ditions: (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 us er’s authority t o ope rate the eq uipment.
This equipmen t has been tes ted 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
ins tallation. This equipment generates , uses and can radiate radio frequency ene rgy
and, if not installed and used in accordance with the instructions, may caus e harmful
interfere nce to radio co mmunications. However, the re is no guarantee that
interference will not occur in a particular installation.
If this equipment d oes cause harmful interfe rence to ra dio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the inte rference 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. En d us er must follow the specific operating instructions
for satis fying RF exposure compliance. This transmitter must not be co-located or
operating in conjunction with any ot her ante nna or transmitte r.
900MHz Stationary Transmitter
It allows the user to transmit the aud io wirelessly in a certain range. Connect the au dio s ource to
the bal. /unbal. I nput on t he back of the transmitter. Hook up the antenna to the front antenna
jack or rear antenna jack and match the antenna selection switch. You ca n monitor the audio via
the headphone jack in front of the panel. In unl ock status, set the channel num ber by pressing
Channel UP or Channe l DOWN b uttons. And adjust the gain output by pres sing Gain UP or Gain
DOWN buttons.
Lock/Unlock
Unlock the transmitter by pressing the LOCK button for a second and the lock ic on di sappears
from the di splay. Press it again to unlock.
Channel setting (1-25)
In unlock status, press the Chan nel + or Channe l – button to scroll up or down the channel
numbers
Gain setting (1-7)
In unlock status, press the Gain + or Gain – button to adjust the gain
MUTE
Press the Gain + or Ga in – b utton for a second to mute the tra nsmitter and the signal streng th
disappears. Press one of it again to unm ute.
Monitoring
Plug in the headpho ne to the headphone o utput jack, tur n the volume knob to adjust the
monitori ng volume
Sampling Rate Switch
On OFF positi on, press and hol d the Gain + and Gain - buttons and turn the transmitter to ON
positi on. When there is digit “16” flash once on the di splay, it means that the device sam pling
rate is set at 16KHz; When it is digit “8” flas h once on the display, it means that it is set at 8KHz.
INPUT SOURCE
XLR or 1/4” bal./unba l. input
RF output level
Set the RF output via RF POWER LEVEL switch at the rear panel.
12dBm
Technical Specifications
Frequency Range: 903MHz – 927MHz
RF Output: 15dBm
Modulatio n: QPSK
Audio sampling: 8bit @8KHz; 8bit @ 16KHz
Power consumption: 60mAH
Dynamic range: >80Db
SNR: >78dB
THD at 1KHz: <1%
Channel s: 25
Channel spacing: 1MHz
Transmitter Troubles
Make sure the power outlet is working and the 9V power adapter i s connected correctly into a
grounded outlet
Independent data streams are sent to each transmit antenna, so it belong to completely
uncorrelated signals.
No Audio Heard in Headphone OUTPUT
a. Check to see if t here is a signa l coming from the audio source. Correct it if necessary.
b. Check to see if there is an incorrect or defective connection from the audio source.
Noise in Aud io
a. Check to see if t here is noi se in source audi o. Disconnect the audio cable to find it
out. If the noise di sappears, the noise prob lem is from the source. Correct or repair
the audio source.
b. Check to see if the source level is too low. Adjust the source audio level or reset
audio select switch to match the existing source level.
c. Make sure there are no major internal obstructions, such as metal support post s,
between antenna and receiver.
Distorted Audio
a. Check to see if t he s ource audio i s distorted source. Correct or repair the audio
source if necessary.
b. Reset the Audio Select Swit ch to match the source.
c. Reset the HI-Pass Filter to adju st the frequency response.
Reception Troubles
No Reception
a. Make sure the transmitter channel matches the receiver c hannel. Reset the
frequency f oll owing the chan nel setting in programming procedures.
b. Check to see if the antenna i s di scon nected. Make sure the antenna switch selection
matches the antenna installed.
c. Reset the transmitter output to see if there is a change.
d. Turn the vo lume controls up.
In sufficient Range, Poor Receptio n
a. Check to see if the transmitter antenna is installed incorrectly. Correct or replace the
antenna
b. Make sure the antenna is not near other t ransmitting antennas or metal objects. Be
sure to route cabling and power cords away from t he antenna, so they do n’ t cause
interference.
c. Check to see if a ny outside sources are using the same frequenc y as the transm itter.
Either locate and remove the outside interference, or set the transmitter to a
different channel to avoid that freque ncy.
d. Try changing the transmitter to a different frequency to see if the so und quality
improves. Some wi ll be received better than others.
Defective Audio
e. Check to see if there is defective audio at the transmitter. If so, check to see if
there is defection audio source.
f. Check to see if there is a strong interfering signal by listening to the receiver with the
transmitter off.
In case the problem persi sts, the unit need s to be serviced. D o not try to service the unit
yoursel f. Please consult your dealer or ARG directly.
Repairs
In the event that there is need for a repair, please contact your dealer or ARG for a Return
Authorization.
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