MIDLAND 77-120ESP - Manual (Page 8)

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12. ESP. INDICATOR: Indicates the ESP2™ “Noise Killer“ circuit has been
activated.
13. S/RF DISPLAY: LCD read-out of received signal strength and relative
transmitter power output.
14. CB/WX: This button causes your unit to change modes between NOAA
weather bureau receiver and CB operation.
15. CH.9 SWITCH: Press this for quick selection of emergency channel 9.
All other channels are locked out when channel 9 is activated by using
the “CH9” switch. Switch off “CH9” switch to return to normal CB
operation.
16. ESP: Pressing this button controls the ESP2™ audio system. Channel
noises are reduced and voices enhanced when ESP2™ is active.
17. FRQ: This switch selects Frequency in MHz display instead of channel
numbers.
BACK PANEL
ANTENNA CONNECTOR: Connect a standard 50-ohm CB antenna to this
connector.
S-METER JACK: A DC voltmeter may be connected to this jack for
precision monitoring of received signal strength.
EXT SPEAKER JACK: When a speaker is connected to this jack the
internal speaker is by-passed. All received signals will be heard through
the external speaker when it is connected. The speaker connected to the
“EXT” jack should be rated at 8 ohms and 5 watts or more.