Icom IC-707 Instruction Manual page 5

© RF POWER CONTROL [RF PWR] (p. 19)
Adjusts the RF output power from minimum to
maximum.
RF PWR
Decreases / 8 Increases
Min. 5 W Max. 100 W*
*AM mode: Max. 25 W
@ DIAL LOCK SWITCH [LOCK] (p. 15)
Electronically locks the main dial to prevent acci-
dental changing of operating frequency or
memory channel.
@ MAIN DIAL (pgs. 15, 16, 25)
— Selects displayed frequency.
— After pushing the [FUNC] switch: Selects a
memory channel.
@ MEMORY WRITE SWITCH [MW (M> VFO)]
(pgs. 26, 27)
— When pushed and held, stores the displayed
frequency and mode into a memory channel.
— After pushing the [FUNC] switch: When pushed
and held, transfers the memory channel con-
tents into the VFO.
(D SPLIT SWITCH [SPLIT [A=B]] (pgs. 22, 28)
— Activates and cancels split frequency opera-
tion.
— After pushing the [FUNC] switch: Copies dis-
played VFO contents into undisplayed VFO.
What is split operation?
Split frequency operation allows you to transmit
and receive on 2 different frequencies.
@ VFO SWITCH [A/B [VM] (pgs. 14, 25)
— Selects VFO A and VFO B alternately.
— After pushing the [FUNC] switch: Selects VFO
mode and MEMORY mode alternately.
What is VFO?
VFO controls required frequencies. VFO stands for
Variable Frequency Oscillator.
|
@ FUNCTION SWITCH [FUNC]
Provides access to a secondary function. Refer
to ®, ©, © and D above.
© MODE SWITCH [MODE] (p. 17)
Selects an operating mode.
Selectable mode restriction
According to your preference, selectable modes can
be restricted in SET mode. Refer to p. 31
PANEL DESCRIPTION 1
Required options
— For CW narrow mode: the FL-52A or FL-53A CW
NARROW FILTER
— For FM mode: the UI-9 FM UNIT
— For accessing a repeater that requires a subaud-
ible tone: the UI-9 and UT-30 PROGRAMMABLE
TONE ENCODER UNIT
Refer to p. 35 for installation.
(D TUNING STEP SWITCH [TS] (pgs. 15, 16)
Selects 10 Hz, 1 kHz and 1 MHz tuning steps or
an amateur band.
Minimum tuning step
Even though 10 Hz digit is not shown on the fre-
quency readout, the minimum tuning step is 10 Hz.
© PREAMP/ATTENUATOR SWITCH
[PREAMP/ATT] (p. 18)
Activates the preamp or attenuator and cancels
them.
What is the preamp?
The preamp amplifies a desired weak signal with 10
dB of amplifier gain. |
What is the attenuator?
The attenuator protects a desired signal from inter-
ference with 20 dB of attenuation when:
— very strong signals are near the desired fre-
quency.
— very strong stations are near your location.
(D RIT SWITCH [RIT] (p. 18)
Activates and cancels the RIT function.
@ NOISE BLANKER SWITCH [NB] (p. 18)
Activates and cancels the noise blanker.
What is the noise blanker?
The noise blanker reduces click noise generated by
vehicle ignition systems, etc.
@ RIT CONTROL [RIT] (p. 18)
Shifts the receive frequency while the RIT function
is activated.
+0 kHz
RIT
Decreases 'OY Increases
— 1.2 kHz +1.2 kHz
What is the RIT function?
The RIT control shifts the receiving frequency to
obtain clear audio for an off-frequency signal. RIT
stands for Receiver Incremental Tuning.