Basic Operation; Batteries Installation; Mh-850C Handheld - Optimus US-902DC Installation And Operating Instructions Manual

4.1.6

Basic operation

– Selecting channel:
Press UP/DOWN button till the RX1 starts flashing, and again press the UP/DOWN button to
select a suitable channel from the pre-set 16 channels.
Later the RX1 stop flashing, the receiver will store the channel
automatically meanwhile presents the channel number.
Repeat the action for RX2.
– Setting lock-on
Alter selecting channel, repress the UP/DOWN buttons till the
HOLD starts flashing simultaneously, and the current setting is
saved in memory on switch off.
– Adjusting Squelch level
With the Squelch level control in the rear panel, you can adjust the squelch at a suitable level.
If the level is set too high, the transmission range will be reduced.

4.2 Batteries installation

4.2.1

MH-850C Handheld

Loosen the microphone element counter-clockwise (Step 1 of Figure 4), press both release knobs
inside to remove the battery tray from the mic. housing (Step 2 of Figure 4).
US-902DC Version 1.0
US-902DC
Figure 4
Wireless Receiver
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