LX Wireless
19
Adjusting the Receiver Squelch Control (Figure 17)
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 receiver
to demand a higher quality signal (less noise before muting), but it
reduces 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 operating
range.
DECREASE
SQUELCH
INCREASE
SQUELCH
WIRELESS
RECEIVER
RF
AUDIO
SQUELCH
LEVEL
POWER
LX4
LX3
DECREASE
SQUELCH
INCREASE
SQUELCH
RECEIVER SQUELCH CONTROL ADJUSTMENT
FIGURE 17
TIPS FOR ACHIEVING OPTIMUM PERFORMANCE
•
Maintain a line-of-sight between the transmitter and receiver antennas, if possible.
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 antennas
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;
1
/
2
-wave or other ground-plane-dependent antennas must
be used if antennas are remotely located. Use the Shure WA503 Front-Mount An-
tenna Conversion Kit to mount antennas on the front of the receiver.
•
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 per-
formance, use the Shure WA421 50
Ω
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 reduce interference.
•
Use the Shure WA302 Instrument Cable when using the LX1 transmitter with a musi-
cal instrument.
•
If multiple wireless systems are used, maintain a distance of at least 3 meters (10 ft.)
between the transmitter and the closest receiving antenna.