User's Manual Part 3

Fig 3 mute function onFig 2 mute function off

Output Level Adjusting

In output level adjusting mode(see fig 4), use the SELECT button to adjust the output level. The output level

has 3 choices, 0 indicates the output level is 500mV, 1 indicates the output level is 300mV, 2 indicates the

output level is 150mV.

Fig 4

Note: the function is only applied to the level of Balanced output.

Squelch Control

Fig 5

Mute Function

In mute mode, use UP/DOWN key to on/off the mute function.(fig 2 mute function off, fig 3: mute function on),:

press the MEM button to keep the information. Note: when the transmitter is muted, no audio signal will be sent

out from the receiver.

ENGLISH

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 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. In the squelch control mode(fig 5), use the UP/DOWN key to select squelch threshold. In order to achieve

easy operation, the squelch threshold is divided into10 levels, please refer to table.

Fig 1