HANDHELD TRANSMITTER BATTERY INSTALLATION:
1. While holding the upper part of the transmitter body just below the ball-screen,
unscrew the lower body cover and slide it downward to expose the battery compart-
ment.
2. Lift the white “battery keeper” arm, and insert a 9V battery. Be certain to observe
correct polarity as marked inside the battery compartment (Fig. G). The transmitter
housing is designed to prevent incorrect installation of the battery. Do not force the
battery in.
3. Replace the lower body cover. Do not overtighten.
SYSTEM OPERATION
Check the frequency of the system against the chart on page 7 to ensure you have the
proper frequency for your area. The frequency is marked on the back panel of the
receiver.
Turn down the AF Level control of the receiver as well as the mixer. Switch on the
receiver only. Do not switch on the transmitter yet.
RECEIVER ON…
The power indicator will light up and one of the diversity indicator LEDs (A or B) will
light, even though the transmitter is not on.
TRANSMITTER ON…
The transmitters have a 3-position power switch. When the switch is set to “Standby,”
the transmitter produces both RF and audio. With the switch “Off,” there is minimum
noise output due to a special muting system.
RECEIVER SQUELCH
The squelch control on the front panel of the receiver is preset at the factory, but can
be adjusted if you must use the system in an area with considerable RF interference. If
there is audio output from the receiver when your transmitter is off, adjust the squelch
control so the system will receive the signal from your transmitter but “squelch” or
eliminate the unwanted background RF noise. This adjustment can cause a reduction
in useable range of the wireless transmitter, so set the control to the lowest position
that reliably mutes the unwanted RF signals.
INPUT LEVEL ADJUSTMENT
Input trimmer controls in the transmitters enable you to use microphones or guitars
with different sensitivities, or to adjust for different acoustic levels.
Caution! The small trimmer controls are delicate; use only the supplied screwdriver. Do
not force the trimmers beyond their normal 260° range of rotation.
Return the screwdriver to its storage clip when not in use.
UNIPAK TRANSMITTER
Slide the battery cover off the top part of transmitter and remove the screwdriver from
its clip (Fig. E). Gently turn the “MT” (mic trimmer) and :GT” (guitar trimmer) controls
to their full counter-clockwise positions.
ADJUSTING MICROPHONE INPUT LEVEL:
With typically-loud acoustic input level to the microphone, carefully turn the MT control
clockwise while watching the receiver’s AF Peak indicator. Increase the MT control set-
ting until the AF Peak indicator lights. This indicates that maximum transmitter modu-
lation without significant distortion has been reached. (When using a guitar, return the
MT control setting to minimum.)
ADJUSTING GUITAR / INSTRUMENT INPUT LEVEL:
While playing at typically-loud levels, carefully turn the GT control clockwise while
watching the receiver’s AF Peak indicator. Increase the GT control setting until the AF
Peak indicator lights. This indicates that maximum transmitter modulation without sig-
nificant distortion has been reached. (When using a microphone, return the GT control
setting to minimum.)
After adjusting input levels, return the screwdriver to its clip and reinstall the battery
cover. No further transmitter gain adjustments should be needed, as long as the input
device and the acoustic input level are not changed.
HANDHELD TRANSMITTER
Unscrew the lower body cover and slide it downward, exposing the screwdriver and
gain trimmer (Fig. H). Remover the screwdriver and gently turn this gain trimmer con-
trol to its full counter-clockwise position.
With acoustic input to the microphone at typically-loud levels, carefully turn the trim-
mer control clockwise while watching the receiver’s AF Peak indicator. Increase the
control setting until the AF Peak indicator lights. This indicates that maximum trans-
mitter modulation without significant distortion has been reached.
Return the screwdriver to its clip and close and secure the lower body. (Make certain
that the white “battery keeper” arm is inside the body.) No further transmitter adjust-
ments should be needed, as long as the acoustic input does not change significantly.
FREQUENCY SELECTION
Each transmitter/receiver system operates on a single factory-aligned, crystal-con-
trolled frequency. Available frequencies are shown in the chart below.
Operating frequency is specified by a two- or three-character code, such as”T2” or
“11G,” in addition to the actual frequency in MHz. The frequency of each transmitter
appears on a label on the outside of the unit. The frequency of the receiver appears on
a label on the back of the unit and the frequency of each system appears on the outer
carton. For future reference, please record them in the space provided.
Because most of these authorized frequencies are shared with TV broadcasting, fre-
quency selection is largely dependent upon which TV broadcast channels are in opera-
tion where the wireless system is to be used.
Fig. G
Fig. H
1. Use only fresh alkaline batteries. Do not use (carbon-zinc) batteries.
2. Position the receiver so that it has the fewest possible obstructions between
it and the normal location of the transmitter. Line-of-sight is best.
3. The transmitter and receiver should be as close together as conveniently
possible.
4. The receiver antenna should be in the open and away from any metal. If in
a rack, have the unit on top or angle antennas outward away from the metal
rack.
5. A receiver cannot receive signals from two transmitters at the same time.
6. The power switch on the transmitter has three positions:
“Off,” “Standby” and “On.” In the middle “Standby” position, the transmit-
ter sends only RF to the receiver; the audio source is turned off.
7. For best operation, adjust the guitar or mic trimmer only until the maximum
output lights the AF Peak indicator (don’t overmodulate).
8. If the AF Level control of the receiver is set too high, it may over-drive the
input of the mixer or clip the output of the receiver, causing distortion. If
the receiver output is set too low, the overall signal-to-noise ratio of the
system may be reduced.
Adjust the output level of the receiver so the highest sound pressure level
going into the microphone causes no input overload in the mixer, and yet
permits the mixer level controls to operate in their”normal” range (not set
too high or too low). This provides optimum signal-to-noise for the entire
system.
9. Turn the transmitter off when not in use. Remove the battery if the trans-
mitter is not to be used for a period of time.
10. In multiple-system applications, set the battery-save switches on “L” (low)
is possible, to reduce the chance of intermodulation problems.
TEN TIPS TO OBTAIN THE BEST RESULTS