Fixing The Communication Mode; Transmission; Changing The Transmission Power Level; Locking Keys And Dial Knob - Yaesu FTM-500DR Operating Manual

Fixing the Communication Mode

1. To fix the transmission mode for operation, press the [D X] key to switch the commu-
nication mode.
Communication Mode
V/D Mode
(Voice/Data simultaneous trans-
mission mode)
Voice FR Mode*
(Voice Full Rate Mode)
FM Mode
AM Mode (receive only)*
*1 When the Set Mode [14 DIGITAL VW] is set to "ON" (factory default is "OFF"), the
Voice FR mode (VW) may be selected.
*2 When the Set Mode [16 RX MODE] is set to "AUTO" (factory default setting), AM
mode is automatically selected within the AIR band.

Transmission

1. While pressing and holding the PTT switch, speak into the microphone.
A red bar will be displayed on the left of the band display.
If the PTT switch is pressed when a frequency other than the amateur ham radio band
is selected, an alarm tone (beep) will be emitted and "TX PROHIBIT" appears on the
LCD, disabling transmission.
2. Release the PTT switch to return to receive mode.
If transmission is continued for a long period, the transceiver overheats and the high
temperature protection function is activated. As a result, the transmitting power level is
automatically set to Low Power. If transmission continues while the high temperature
protection function is active, the transceiver will be forcibly returned to the receive
mode.

Changing the Transmission Power Level

1. Press the FUNC knob, then rotate the FUNC knob to select "TXPWR".
2. Press the FUNC knob to select one of the following transmission power levels.
HIGH (50W) → LOW (5W) → MID (20W)
3. Press the [BACK] key twise to save the setting and return to the normal operation.
The transmission power level may be set separately for each frequency band.

Locking Keys and DIAL knob

1. Press the Power (Lock) switch, "LOCK" is displayed on the display for one second,
the " " icon appears on the LCD, and then the keys and DIAL knob are locked.
2. Press the POWER (Lock) switch again, "UN LOCK" will be displayed on the Display
and keys and the DIAL knob are unlocked.
14
Icon
This is the standard digital mode.
Calls are less prone to interruptions caused by detec-
DN
tion and correction of the received digital voice signal.
High speed data communication using entire 12.5 kHz
1
*1 band.
VW
Enables high-quality voice communication.
FM Analog communication using FM mode.
The AM mode for receive only.
AM
2
Description of Modes