Icom IC-7410 Instruction Manual page 11

[RTTY]
Push to alternately select the RTTY and RTTY-R
(RTTY reverse) modes.
[AM/FM]
Push to alternately select the AM or FM modes.
Hold down for 1 second to select the AM or FM
data mode (AM-D/FM-D).
D" appears in addition to "AM" or "FM."
In the data mode, push to return to the normal
AM or FM mode.
@5
PREAMP SWITCH Operation (p. 55)
Push to select one of two receive RF preamplifiers,
or to bypass them.
" is a wide dynamic range preamplifier. It is
most effective for the 1.8 to 21 MHz bands.
" is a high-gain preamplifier. It is most effec-
tive for the 24 to 50 MHz bands.
lected.
What is the preamplifier?
The preamplifier amplifies signals in the front end
to improve the S/N ratio and sensitivity. Select "P.
AMP " or "P. AMP " when receiving weak sig-
nals.
ATTENUATOR SWITCH Operation (p. 55)
Hold down for 1 second to turn ON the attenua-
tor.
Push to turn OFF the attenuator.
What is the attenuator?
The attenuator prevents a desired signal from being
distorted when very strong signals are near it, or
when very strong electromagnetic fields, such as
from a broadcasting station, are near your location.
@6
VOX SWITCH Operation (p. 62)
Push to turn the VOX function ON or OFF.
Hold down for 1 second to display the "VOX"
screen. Push to return to the previous screen
display.
What is the VOX function?
The VOX function (voice operated transmission)
automatically starts transmission when you speak
into the microphone; then automatically returns to
receive when you stop speaking.
Push to toggle the Break-in function between semi
break-in and full break-in, or to turn OFF the func-
tion.
What is the Break-in function?
The Break-in function automatically switches be-
tween transmit and receive with your CW keying.
Using the Full Break-in function (QSK), you can
hear the receive frequency in-between keying.
@7 COMPRESSOR SWITCH [COMP] (p. 64)
Push to turn the Speech Compressor function ON
or OFF.
@8 MONITOR SWITCH [MONITOR] (p. 65)
Push to turn the Monitor function ON or OFF to lis-
ten to your own transmitted audio.
-
gardless of the [MONITOR] switch setting.
@9 SPEECH SWITCH [SPEECH] (p. 33)
Push to audibly announce the S-meter level and
the displayed frequency.
Hold down for 1 second to audibly announce the
S-meter level, the displayed frequency, and the
operating mode.
"SPEECH S-Level" item of the Set mode. (p. 87)
not included in the frequency announcement.
#0 FILTER SWITCH [FILTER] (p. 57)
Push to select one of three IF filter settings ( / /
).
are displayed for 2 seconds on the LCD display.
Hold down for 1 second to display the "FIL"
screen (Filter) to set the filter passband width.
Hold down for 1 second again to return to the
previous screen display.
#1 TUNING DIAL [DIAL] (p. 26)
Rotate to change the operating frequency, select
the Set mode settings, etc.
#2 LOCK SWITCH [LOCK] (p. 61)
Push to turn the Dial Lock function ON or OFF.
" appears when this function is ON.
PANEL DESCRIPTION
Operation (p. 63)
∂TX are ON, the RIT/∂TX offset is
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