Meter Function; Swr Reading - Icom IC-756PRO Instruction Manual

5
RECEIVE AND TRANSMIT

Meter function

The transceiver has 4 transmit meter functions for
your convenience. Select the desired meter with the
[METER] switch.
• Analog transmit meter
Push [METER] to select RF power (Po), SWR, ALC
or compression level (COMP) for transmit metering.
[METER] switch
DISPLAY
INDICATION
Indicates the relative RF output power in
Po
%.
Indicates the SWR over the transmission
SWR
line.
Indicates the ALC level. When the meter
movement shows the input signal level
ALC
exceeds the allowable level, the ALC
limits the RF power. In such cases,
reduce the [MIC GAIN] control.
Indicates the compression level when
COMP
the speech compressor is in use.

SWR reading

The SWR meter indicates the SWR over the trans-
mission line in all modes.
q Push [TUNER] to turn the antenna tuner OFF.
w Push [METER] one or more times to select the Po
meter.
e Push [CW/RTTY] once or twice to select RTTY
mode.
r Push [TRANSMIT].
t Rotate [RF POWER] clockwise past the 12 o'clock
position for more than 30 W output power (30%).
y Push [METER] once to select the SWR meter as
the transmit meter.
u Read the SWR on the SWR meter.
36
MEASUREMENT
In addition, the transceiver can display the multi-func-
tion digital meter in the LCD display, which displays
all transmit meters simultaneously.
• Multi-function digital meter
q Push [METER] for 2 sec. to turn the multi-function
digital meter ON or OFF.
w Push [(F-1)P-HOLD] to toggle the peak level hold
function ON or OFF.
• "P-HOLD" appears on the window title when the peak
level hold function is turned ON.
qr≥qot≥pp
qr≥wpt≥pp
Less than 1.5:1
9
5
1
25 50
10
0
S
3
2
Po
1.5
1 10
SWR 0
COMP
ALC
The built-in antenna tuner matches the transmitter
to the antenna when the SWR is lower than 3 : 1.
qw pp
SWR meter
+ 20
+ 40
+ 60dB
100
20
dB