- Squelch Control
The job of a squelch circuit is to reduce audible noise. It eliminates noise during
Pauses in the audio signal by muting the receiver every time and the audio level drops
below a defined threshold. The squelch control on the receiver sets this
threshold. Use the squelch control with care! If the squelch threshold is too
high, the squelch will not only cut out noise but mute quiet audio signals as
well because the squelch responds to the detected voltage and cannot
distinguish between wanted signal and noise. Besides that, a too high squelch
threshold also decreases the usable range. The squelch range is 95.0 dB~
65.0 dB. Use an adjusting bar to adjust the squelch selector for a right
squelch threshold.
4.2 FOR the U-16H/16P TRANSMITTER
- Frequency Select
In practice, to effectively avoid the interference from any lighting equipment, computers,
fax machines, etc nearby, It is usually advised to switch to another frequency
to get best performance. The frequency range of this system is UHF, 798 MHz
~ 827 MHz, and it is divided into 16 frequency bands according to the country's
EMC regulations; Each frequency band can be manually adjusted with an adjusting
bar. If you want to switch a frequency, you have to turn off the unit, adjust
frequency and then turn it on again.
- Battery Replacing And Charging
Note
Please be advised to use only one pair of AA 1.5 V batteries for power supply.
Danger of explosion if battery is incorrectly replaced. Replace the
batteries only with the same or equivalent type.
:
3. CONTROL ELEMENTS
4. OPERATION
8
4.1 FOR the U-16R, PLL UHF DIVERSITY RECEIVER
- Manually Selecting Frequency
With an adjusting bar, adjust the band selector to select the right frequency
which matches the frequency of transmitter.
- Output Volume Control
It is used to control the output volume. Turn the knob clockwise, the output
volume will increase. Turn the knob counter-clockwise, the output volume will
decrease.
