Kenwood TH-42A - Manual (Page 14)

The purpose of the following sections is to describe
basic functions. Please refer to later sections for greater
detail.
KEYS, CONTROLS, SWITCHES,
INDICATORS
(D PWRA^OL (PowerA/olume) control
Turn the control clockwise until it clicks to switch ON the
transceiver. To switch OFF the transceiver, turn
counterclockwise to OFF.
Turning the control clockwise after switching ON the
transceiver increases the volunne.
® ENC/SQL (Encoder/Squelch) control
Select operating frequencies, frequency steps, memory
channels, transmit offsets, Tone frequencies, menu
items, and use to reverse scan direction. Also, use to
manually set the receiver squelch threshold level.
(D ON AIR indicator LED
Lights when [PTT] is pressed while a frequency within
the transmit band is selected.
® PTT (Push-To-Talk)
Hold down to transmit. Release to receive.
(S) LAMP
Press to illuminate the display. The display remains lit
while [LAMP] is held down. Approximately 5 seconds
after releasing [LAMP], the light goes OFF if no other
key is pressed. Pressing any key except [LAMP] while
the display is lit restarts the 5 second timer. Otherwise,
pressing [LAMP] turns OFF the light immediately. To
latch the light ON, press [F], [LAMP]. The display
remains lit until [LAMP] is pressed again.
(D MONI (Monitor)
Hold down to monitor the operating frequency even when
noise squelch, CTCSS, DTSS, Page, or Tone Alert is
ON. "BUSY" appears on the display while MONI is held
down. Also, use in combination with the ENC/SOL
control to manually set the receiver squelch threshold
level.
Ф F (Function)
Use in combination with dual function keys to select the
alternate key function. Also, use to select Memory
Storage and 1 MHz Step.
Ф VFO
Press to select the VFO.
CD MR (Memory Recall)
Press to select Memory Recall.