Icom IC-7100 Instruction Manual - Page 9

Manual notch: SSB/CW/RTTY/AM, What is the notch filter? - gps

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1 PANEL DESCRIPTION !6 NOTCH KEY NOTCH (AI sec. 5) (Mode = Auto notch: SSB/AM/FM Manual notch: SSB/CW/RTTY/AM) ➥➥In the SSB and AM modes, push to toggle the notch function between auto, manual and OFF. • Either the Auto or Manual notch function can be turned OFF in the "[NOTCH] Switch (SSB)/(AM)" items of the "Function" Set mode. (6-21) SET > Function > [NOTCH] Switch (SSB) SET > Function > [NOTCH] Switch (AM) ➥➥In the FM mode, push to turn the Auto Notch function ON or OFF. ➥ In the CW or RTTY mode, push to turn the Manual Notch function ON or OFF. • "MN" appears when the Manual Notch function is ON. • "AN" appears when the Auto Notch function is ON. • No indicator appears when the notch filter is OFF. ➥ Hold down for 1 second to display the "NOTCH" screen. Push to return to the previous screen. • Rotate the Dial to adjust the notch frequency to reject an interfering signal when the manual function is ON. • Notch filter center frequency: SSB/RTTY: -1040 Hz to +4040 Hz CW: CW pitch frequency -2540 Hz to CW pitch frequency +2540 Hz AM: -5060 Hz to +5100 Hz ✔ What is the notch filter? The notch filter is a narrow filter that eliminates unwanted CW or AM carrier tones, while preserving the desired voice signal. The DSP circuit automatically adjusts the notch frequency to effectively eliminate unwanted tones. !7 DR MODE KEY DR (section 4, 5, AI sec. 9) ➥ Push to select the DR mode. • When the DR mode is selected, the transceiver automatically selects the DV mode. ➥ In the DR mode, push to cancel it. • The transceiver returns to the previous screen before entering the DR mode. !8 SET MODE KEY SET (section 6) ➥ Push to enter or exit the SET mode. • "Voice Memo," "Call Sign," "RX History," "DV Memory," "My Station," "DV Set," "GPS," "SPEECH," "QSO/RX Log," "Function," "Tone Control," "Connectors," "Display," "Time Set," "SD Card" and "Others" set group are selectable. !9 QUICK MENU KEY QUICK ➥ Push to open or close the Quick Menu window. • The Quick Menu is used to quickly select various functions. ➥ In the setting screen, push to open the Default set window. • Touch "Default" to reset to the default setting. @0 AUTO TUNE•RXCS KEY AUTO TUNE RX�CS ❍ AUTO TUNE KEY Operation (AI sec. 4) (Mode: CW) ➥ P ush to automatically adjust for a zero beat with the received signal. Zero beat means that two signals are exactly the same frequency. • "AUTO TUNE" blinks when the auto tune function is activated. • When the RIT function is ON, the auto tune function changes the RIT frequency, not the displayed frequency. ❍ RX CALL SIGN CAPTURE KEY Operation (p. 5-6) (Mode: DV, when the DR mode is selected) ➥ P ush to open the "RX>CS" screen. Push again to return to the previous screen. ➥ H old down for 1 second to set the received call signs (station and repeaters) as the operating call sign. @1 TRANSMIT FREQUENCY CHECK KEY XFC ➥ During split frequency or repeater operation, hold down to listen to the transmit frequency. (AI sec. 4) • While holding down this switch, the transmit frequency can be changed with the Dial or MPAD . • When the Split Lock function is turned ON in the Split operation, hold down XFC to cancel the Dial lock function. ➥ When operating simplex, hold down to monitor the frequency. • While holding down this key, the squelch is open and the interference reject function is temporarily turned OFF. ➥ When operating simplex and the RIT function is turned ON, hold down to listen to the transmit frequency. The frequency is the same as when the RIT is OFF. ➥ In the DV mode, hold down this key to select the RX monitoring mode. (p. 6-3) 1-5

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1
PANEL DESCRIPTION
1-5
!
6
NOTCH KEY
NOTCH
(AI sec. 5)
(Mode = Auto notch:
SSB/AM/FM
Manual notch: SSB/CW/RTTY/AM)
In the SSB and AM modes, push to toggle the
notch function between auto, manual and OFF.
• Either the Auto or Manual notch function can be turned
OFF in
the “[NOTCH] Switch (SSB)/(AM)” items
of the
“Function” Set mode. (6-21)
SET
> Function >
[NOTCH] Switch (SSB)
SET
> Function >
[NOTCH] Switch (AM)
In
the
FM mode, push to turn the Auto Notch func-
tion ON or OFF.
In
the
CW or RTTY mode, push to turn the Manual
Notch function ON or OFF.
• “MN” appears when the Manual Notch function is
ON.
• “AN” appears when the Auto Notch function is ON.
• No indicator appears when the notch filter is OFF.
Hold down for 1 second to display the “NOTCH”
screen.
Push to return to the previous screen.
• Rotate the Dial to adjust the notch frequency to reject
an interfering signal when the manual function is ON.
• Notch filter center frequency:
SSB/RTTY: –1040 Hz to +4040 Hz
CW:
CW pitch frequency –2540 Hz to
CW pitch frequency +2540 Hz
AM:
–5060 Hz to +5100 Hz
What is the notch filter?
The notch filter is a narrow filter that eliminates un-
wanted CW or AM carrier tones, while preserving
the desired voice signal. The DSP circuit automati-
cally adjusts the notch frequency to effectively elimi-
nate unwanted tones.
!
7
DR MODE KEY
DR
(section 4, 5, AI sec. 9)
Push to select the DR mode.
• When the DR mode is selected, the transceiver auto
-
matically selects the DV mode.
In the DR mode, push to cancel it.
• The transceiver returns to the previous screen before
entering the DR mode.
!
8
SET MODE KEY
SET
(section 6)
Push to enter or exit the SET mode.
• “Voice Memo,” “Call Sign,” “RX History,” “DV Memory,”
“My Station,” “DV Set,” “GPS,” “SPEECH,” “QSO/RX
Log,” “Function,” “Tone Control,” “Connectors,” “Dis-
play,” “Time Set,” “SD Card” and “Others” set group
are selectable.
!
9
QUICK MENU KEY
QUICK
Push to open or close the Quick Menu window.
• The Quick Menu is used to quickly select various
functions.
In the setting screen, push to open the Default
set window.
• Touch “Default” to reset to the default setting.
@
0
AUTO TUNE•RX
CS KEY
AUTO TUNE
RX
CS
AUTO TUNE KEY Operation (AI sec. 4)
(Mode: CW)
Push to automatically adjust for a zero beat
with the received signal.
Zero beat means that two signals are exactly the
same frequency.
• “AUTO TUNE” blinks when the auto tune function
is activated.
• When the RIT function is ON, the auto tune func
-
tion changes the RIT frequency, not the displayed
frequency.
RX CALL SIGN CAPTURE KEY Operation
(p. 5-6)
(Mode: DV, when the DR mode is selected)
Push to open the “RX>CS” screen.
Push again to return to the previous screen.
Hold down for 1 second to set the received call
signs (station and repeaters) as the operating
call sign.
@
1
TRANSMIT FREQUENCY CHECK KEY
XFC
During split frequency or repeater operation, hold
down to listen to the transmit frequency. (AI sec. 4)
• While holding down this switch, the transmit frequen
-
cy can be changed with the Dial or
MPAD
.
• When the Split Lock function is turned ON in the Split
operation, hold down
XFC
to cancel the Dial lock
function.
When operating simplex, hold down to monitor
the frequency.
• While holding down this key, the squelch is open and
the interference reject function is temporarily turned
OFF.
When operating simplex and the RIT function is
turned ON, hold down to listen to the transmit fre-
quency. The frequency is the same as when the
RIT is OFF.
In the DV mode, hold down this key to select the
RX monitoring mode. (p. 6-3)