■Front panel
qPOWER SWITCH [POWER/TIMER]
➥Push momentarily to turn power ON.
•Turn the optional DC power supply ON in advance.
•A/D converter calibration of the DSP unit starts and it
takes approx. 10 sec.
➥Push momentarily to toggle the timer function ON
and OFF. (p. 63)
•
The power switch lights while the timer function is ON.
➥Push for 1 sec. to turn power OFF.
wTRANSMIT SWITCH [TRANSMIT]
Selects transmitting or receiving.
•The [TX] indicator lights red while transmitting and the
[RX] indicator lights green when the squelch is open.
eHEADPHONE JACK [PHONES]
Accepts headphones.
•Output power: 5 mW with an 8 Ωload.
•When headphones are connected, the internal speaker
or connected external speaker does not function.
rELECTRONIC KEYER JACK [ELEC-KEY] (p. 43)
Accepts a paddle to activate the internal electronic
keyer for CW operation.
•Selection between the internal electronic keyer, bug-key
and straight key operation can be made in keyer set
mode. (p. 43)
•A straight key jack is separately available on the rear
panel. See [KEY] on p. 12.
•Keyer polarity (dot and dash) can be reversed in keyer
set mode. (p. 43)
•4-channel memory keyer is available for your conve-
nience. (p. 44)
tMICROPHONE CONNECTOR [MIC]
Accepts the supplied or optional microphone.
•See p. 84 for appropriate microphones.
•See p. 9 for microphone connector information.
yAF CONTROL [AF] (inner control)
Varies the audio output level from the speaker.
uMIC GAIN CONTROL [MIC GAIN]
Adjusts microphone input gain.
•The transmit audio tone in SSB mode can be adjusted in
set mode. (p. 65)
✔
How to set the microphone gain.
Set the [MIC] control so that the ALC meter sometimes
swings during normal voice transmission in SSB mode.
MIC GAIN
Recommended level for
an Icom microphone
IncreasesDecreases
AF RF/SQL
No audio output Max. audio output
Decreases Increases
(dot)
(com)
(dash)
2
2
PANEL DESCRIPTIONTIMER
POWER
TRANSMIT
PHONES
ELEC-KEY
MIC
TUNER MONITOR NB NR
AF BAL NRRF/SQL
MIC GAIN RF POWER COMP BK-IN DELAYKEY SPEED
F-1 F-2 F-3 F-4 F-5
HF/50MHz TRANSCEIVER
i756PRO™
SSB
CW/RTTY
AM/FM FILTER EXIT/SET
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