Controls and operation
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English
Microphone
17. PTT (Push-to-Talk) Key
Connect the supplied dynamic microphone to this connector, locking it by tightening
the ring nut.
18. UP (Channel Selector) Key
Each time this key is pressed, the channel number will move upward by one channel.
19. LOCK (Keypad Lock) Key
The LOCK function is enabled when pressing this key, in order lock the keypad and
prevent entering unwanted commands. When the LOCK function is enabled, the
LOCK icon (L) appears on the LCD display.
20. DOWN (Channel Selector) Key
Each time this key is pressed, the channel number will move downward by one
channel.
21. MICROPHONE Plug
6-pole microphone plug with locking ring nut, to be connected to the microphone
connector (21) located on the front side of the radio.
19
18
17
20
21
Summary of Contents for M-790 plus
Page 31: ...ESP Compander Diagram 29 ...
Page 32: ...PCB Main Board CPU Board 30 ...
Page 33: ...PCB Main Board CPU Board 31 ...
Page 34: ...Diagram 32 ...
Page 35: ...Diagram 33 ...
Page 36: ...Block Diagram 34 Italiano ...
Page 37: ...Block Diagram 35 Italiano ...
Page 38: ...Notes 36 ...
Page 39: ...Notes 37 ...
Page 40: ......