Operating am, Dconvenient functions for receive – Icom IC-7700 User Manual

Page 81

4-29

■

Operating AM

Push a band key to select the desired band.

Push to

select

AM.

• “AM” indicator appears.
• After AM mode is selected, push

to toggle be-

tween AM and FM modes.

Rotate the main dial to tune to the desired fre-
quency.

• The S-meter indicates received signal strength when

signal is received.

Rotate [AF] to set audio to a comfortable listening
level.

Push

or [PTT] (microphone) to transmit.

• The TX indicator lights red.

Speak into the microphone at your normal voice
level.

• Adjust the microphone gain with [MIC] at this step, if

necessary.

Push

or release [PTT] (microphone) to

return to receive.

TRANSMIT

AM/FM

Appears

[MIC]

[TX] indicator [RX] indicator

[AF]

Main dial

Band keys

AM/FM

RECEIVE AND TRANSMIT

• Preamp (p. 5-9)

➥

Push [P.AMP]

(MF3)

several times to set the pre-

amp OFF, preamp 1 ON or preamp 2 ON.

• “P.AMP1” or “P.AMP2” appears when the preamp 1 or

preamp 2 is ON.

• Attenuator (p. 5-9)

➥

Push [ATT]

(MF4)

several times to set the attenu-

ator in 6 dB steps.

• Push and hold [ATT]

(MF3)

for 1 sec. to turn the atten-

uator function OFF.

• “ATT” and attenuation level appear when the attenu-

ator is ON.

• Noise blanker (p. 5-16)

➥

Push

to turn the noise blanker ON and

OFF, and then rotate [NB] control to adjust the
threshold level.

• Noise blanker indicator (above

switch) lights

when the noise blanker is ON.

• Push and hold

for 1 sec. to enter noise blanker

set mode.

• Noise reduction (p. 5-17)

➥

Push

to turn the noise reduction ON and

OFF.

• Rotate [NR] control to adjust the noise reduction

level.

• Noise reduction indicator (above

switch) lights

when the noise reduction is ON.

• Audio tone control (p. 12-4)

➥

Push [F-7•SET] then [F-1•LEVEL] to enter level
set mode. Select an item with [F-1•

]/[F-2•

]

then rotate the main dial to adjust the audio tone.

• Twin PBT (passband tuning) (p. 5-12)

➥

Rotate [TWIN PBT] controls (inner/outer).

• PBT indicator (above

switch) lights when

PBT is in use.

• Push and hold

for 1 sec. to clear the set-

tings.

• Notch filter (p. 5-18)

➥

Push

to turn the manual notch function

ON and OFF.

• Rotate [NOTCH] control to set the attenuating fre-

quency.

• Notch indicator (above

switch) lights when

either the auto or manual notch is ON.

• AGC (auto gain control) (p. 5-11)

➥

Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.

➥

Push

to turn the AGC time constant

manual setting ON and OFF.

• Rotate [AGC] control to adjust the time constant.

• Auto tuning function (p. 5-19)

➥

Push [AUTOTUNE] to turn the auto tuning func-
tion ON and OFF.

• The transceiver automatically tunes the desired sig-

nal within ±5 kHz range.

IMPORTANT!
When receiving a weak signal, or receiving a signal
with interference, the automatic tuning function may
not tune, or may tune to an undesired signal.

AGC VR

NOTCH

PBT-CLR

Convenient functions for receive