Kenwood TM-255A Instruction Manual page 17

2 GETTING ACQUAINTED
MICROPHONE
MC-45DM/45DME
MC-45/45E
@ [UP] button
@ [DWN] button
In general, these buttons perform the same function
as the Alternate Tuning control. They raise or lower
the VFO frequency, the memory channel number, the
Tone/CTCSS frequency, or the DTSS/Page code
digits. Holding either button down causes the action
to be repeated. Also, in Menu Setup, the buttons are
used to switch among available menu selections for
each menu number.
@ [PTT] (Push-to-talk) switch
Press to transmit; release to receive. Also, press to
exit Scan and DTSS/Page code setting.
@ LOCK switch
Locks all microphone functions except [PTT] and, if
equipped, the DTMF keypad. This switch does not
lock Front Panel buttons.
© PF (Programmable Function) keys
These keys do not have fixed functions, i.e. their
functions can be assigned and changed by the
operator {page 35}. By default, the keys have the
following functions:
[PF] key
Accesses the last menu number used in Menu Setup.
[VFO] key
Each press toggles between VFO A or VFO B. Same
function as [A/B] on the Front Panel.
[MR] key
Selects Memory Recall for access to the memory
channels. Same function as [MR] on the Front Panel.
10
[CALL] key (MC- 45/45DM)
Recalls the Call channel. Same function as [CALL]
on the Front Panel.
[1750] key (MC-45E/45DME)
Sends a 1750 Hz tone for repeater access.
© DTMF keypad (some versions only)
The 16-key keypad is used to transmit DTMF tones.
MICROPHONE CONNECTOR
(Front View)
UP DWN
DC 8 V, 100 mA RD: Receive audio
max. GND MIC (100 mV/ 10 ka)
STBY (PTT)| | GND (MIC)