Instruction Manual

21
CHAPTER 4 FRONT PANEL
4-1 EXPLANATION OF KEY, KNOB AND LAMP OF THE
MAIN UNIT
< SRG-150DN/250DN front panel of the main unit>
① KEY PANEL
② Front display (LCD) - indicates mode / frequency / channel / use of other functions
and etc.
③ Internal speaker
④ Microphone connection jack - connects the supplied microphone.
⑤ DISTRESS – is used for DISTRESS transmission.
⑥ Sensitivity - is used to adjust the GAIN of the amplifying stage of receiver.
⑦ Volume – is used to adjust the speaker’s volume.
⑧ Channel – is used to adjust the channel and frequency up / down.
Turn on / off the main unit.
Press for 5 seconds to send a digital distress alert signal.
Turn on / off the 1.4KHz test signal.