Icom IC-7851 Instruction Manual page 26

1
PANEL DESCRIPTION
■
Front panel (Continued)
^5 LOCK KEY [LOCK]
Push to turn the Dial lock function ON or OFF.
^6 QUICK TUNING KEY [TS]
➥ Push to turn the Quick Tuning step function ON or
OFF. (p. 4-7)
• While the Quick Tuning icon, "Z," is displayed above
the frequency readout, the frequency can be changed
in selected kHz steps.
• 0.1, 1, 5, 9, 10, 12.5, 20 and 25 kHz steps can be
independently set for each operating mode.
When the Quick tuning step is OFF, hold down
➥
for 1 second to turn the 1 Hz tuning step ON or
OFF. (p. 4-8)
➥ When the Quick Tuning step is ON, hold down
for 1 second to enter the Quick Tuning step set
screen. (p. 4-7)
^7 CLEAR KEY [CLEAR]
You can clear the RIT/∂TX shift frequency by hold-
ing down for 1 second or pushing, depending on the
quick RIT/∂TX clear function setting
^8 ∂TX KEY [∂TX]
(p. 8-5)
∂TX function ON or OFF.
➥
Push to turn the
• Rotate the [RIT/∂TX] control to vary the ∂TX fre-
quency.
➥
Hold down for 1 second to add the
quency to the operating frequency.
✔ What is the ∂TX function?
∂TX shifts the transmit frequency without shifting the
receive frequency. This is useful for simple split fre-
quency operation in CW, and so on.
(p. 4-12)
(pp. 7-3, 8-5)
(p. ?12-18)
∂TX shift fre-
&5
^9 RIT KEY [RIT]
➥
Push to turn the RIT function ON or OFF.
• Rotate the [RIT/∂TX] control to vary the RIT frequen-
cy.
➥
Hold down for 1 second to add the RIT shift fre-
quency to the operating frequency.
✔ What is the RIT function?
Receiver incremental tuning (RIT) shifts the receive
frequency without shifting the transmit frequency.
This is useful for fine tuning stations calling you on
off-frequency or when you prefer to listen to slightly
different-sounding voice characteristics, and so on.
&0 CW PITCH CONTROL [CW PITCH]
Shifts the received CW audio pitch and the CW side
tone pitch without changing the operating frequency.
&1 MANUAL NOTCH FILTER CONTROL [NOTCH]
(p. 7-13)
Varies the "valley" frequency of the manual notch
. filter to reject an interfering signal while the manual
notch function is ON.
• Notch filter center frequency:
SSB : –1060 Hz ~ 4040 Hz
CW : CW pitch frequency + 2540 Hz ~ CW pitch
frequency –2540 Hz
AM : –5100 Hz ~ 5100 Hz
&2 DIGITAL RF SELECTOR CONTROL [DIGI-SEL]
(p. 7-12)
Adjusts the digital RF selector center frequency.
• The control can be reassigned as the Audio peak filter
adjustment
1-10
&4
^5
(p. 7-3)
(p. 15-15)
&3
&2
&1
&0
^9
^8
^7
^6
(p. 5-6)