17
LX Wireless System
ADJUSTING THE RECEIVER SQUELCH CONTROL
The receiver squelch control is factory preset at the 12 o'clock position for op-
timum performance. No further adjustment is normally required. However, it is
possible to adjust the squelch control to emphasize either signal quality or system
range.
• To raise the squelch threshold, rotate the control clockwise. This causes the re-
ceiver to demand a higher quality signal (less noise before muting), but it reduc-
es the operating range.
• To lower the squelch threshold, rotate the control counterclockwise. This allows
a lower quality signal through (more noise before muting), but it extends the op-
erating range.
RECEIVER SQUELCH CONTROL ADJUSTMENT
FIGURE 17
TIPS FOR ACHIEVING OPTIMUM PERFORMANCE
• Maintain a line-of-sight between the transmitter and receiver antennas, if possi-
ble. Avoid placing transmitter and receiver where metal or other dense materials
may be present.
• Avoid placing the receiver near computers or other RF generating equipment.
• Avoid placing the receiver in the bottom of an equipment rack unless the anten-
nas are remotely located.
• Use the proper receiver antenna(s). A 1/4-wave antenna can be used if it is
mounted directly on the receiver; use a 1/2-wave or other ground-plane-depen-
dent antenna if antennas are remotely located. Use the Shure WA503
Front-Mount Antenna Conversion Kit to mount antennas on the front of the re-
ceiver.
• Mount 1/4-wave antennas with the antenna tips pointed away from each other
at a 45
°
angle, and away from large metal objects.
• Use the proper antenna cable when remotely locating receiver antennas. For
best performance, use the Shure WA421 50 W RG-58 coaxial antenna cable,
and the minimum length necessary. For cable runs greater than 12.2 meters (40
feet), use RG-8 coaxial cable.
• Mount diversity antennas at least 1/4-wave apart [42 cm (17 inches) for VHF
systems, although a 1.5 m (60 inches) spacing is preferred]. For multiple system
installations, use the Shure WA405 Antenna/Power Distribution Kit or the
WA470 Passive Antenna Splitter to minimize the number of antennas and re-
duce interference.
• Use the Shure WA302 Instrument Cable when using the LX1 transmitter with a
musical instrument.
• If using multiple wireless systems, maintain a distance of at least 3 meters
(10ft.) between the transmitter and the closest receiving antenna.
WIRELESS
RECEIVER
RF
AUDIO
SQUELCH
LEVEL POWER
LX4
LX3
DECREASE
SQUELCH
INCREASE
SQUELCH
DECREASE
SQUELCH
INCREASE
SQUELCH
