Yaesu M-100, Manual, Page: 7 / 12

5
Controls & Connections
M-100 Operating Manual
LC (Low-Cut) key
W hen this key is pressed, a low-cut filter
(cut-off frequency 340 Hz, -6 dB/
octave) is activated ([LC] LED lights up blue).
HC (High-Cut) key
When this key is pressed, a high-cut filter
(cut-off frequency 2 kHz, -6 dB/
octave) is activated ([HC] LED lights up blue).
When the [LC] and [HC] keys are pressed, both filters operate simultaneously.
While listening to the transmitted audio using the transceiver monitor function, ad-
just the microphone gain and the monitor level of the radio.
LOCK key
This is a one touch PTT key with a lock function.
When the LOCK key is pressed, the transmit mode is set and held, When
the key is pressed again the transceiver returns to receive mode again.
r
Operation of the PTT key is disabled when the LOCK key is operated.
r
The LOCK key indicator lights up red when the LOCK key is in operated.
PTT key
Press and hold down this key to transmit, and release it to receive.
The PTT key has a built in the magnetic sensor. Strong magnetic items, such
as a speaker or a magnet, may affect this PTT key, resulting in malfunctions.
On Air Indicator
This illuminates in red when in TX mode.
The indicator is off when in RX mode.