LY International Electronics H-66B Manual page 9

microphone as short as possible for better reception and performance
2. To avoid RF signal influence, always keep the receiver away from computer or other
potential sources of interference.
3. Avoid installing the receiver at the lowest floor of equipment cabinet
4. This wireless system can support up to 200 microphones at the same time, no disturb, but
it has to be adjusted by professional before using.
Trouble Shooting
Problem/Status
No sound (Status: No receiver RF signal )
No sound (Status: RF & AF signal active)
No sound (Status: RF signal active, no AF
Distortion or unwanted noise bursts
Sound level different from cabled guitar or
microphone, or when using different guitars
Can not turn on/off transmitter
signal)
Make sure transmitter and receiver's

power switch "ON" position
Check the battery polar

Check the antenna of the receiver

Make sure there are no obstruct between

antenna and transmitter
Check receiver volume knob

Check the

amplifier and mixer.
Check the volume knob of amplifier and

mixer
Check transmitter 's power

Exchange the microphone if necessary

Remove RF interference (CD players,

computers, in-ear monitor system, ect.)
Change receiver and transmitter to a

different frequency
Reduce transmitter gain

Replace transmitter battery

If use multiple systems, increase the

frequency band between systems
Adjust transmitter gain and receiver

volume as necessary
Replace the battery

8
Solution
connection of receiver,