Icom IC-R71A Instruction Manual page 9

the displayed frequency, thus inactivating the operation of
the tuning knob. To change frequency, the dial lock must
first be disengaged by pushing and releasing the DIAL
LOCK switch again.
25. MEMORY CHANNEL SELECT SWITCH
Selects any one of 32 memory channels in the MEMORY
CHANNEL operation. The selected channel number is
displayed on the frequency display. By turning the switch
clockwise the channel number is increased and counter-
clockwise decreased.
26. MEMORY WRITE/CLEAR BUTTON
By pushing this button, a displayed frequency and selected
mode are stored into a memory channel which is selected
by the MEMORY CHANNEL SELECT switch.
By pushing the FUNCTION KEY first then this button, the
secondary function is selected and the memorized fre-
quency and mode in the displayed memory channel will be
cleared.
27. NOTCH FILTER SWITCH
Switches the notch filter function ON and OFF.
28. P.B. TUNE (PASS BAND TUNING) CONTROL
Allows continuous tuning of the pass-band selectivity by
moving the filter up to 800Hz from the upper or lower side
in SSB, CW and RTTY. Not only improves selectivity, but
also can improve the audio tone. Normal position is in the
center (12 o'clock) position and is 2.3KHz wide in SSB.
29. NOTCH FILTER CONTROL
Shifts the notch filter frequency. Adjust the control so
that the interference is reduced.
30. KEY PAD
There are ten numerical keys, and the canceling and enter-
ing keys for setting an operating frequency.
31. SPEECH SYNTHESIZER SWITCH
When the optional speech synthesizer unit is installed, this
switch turns on the unit which announces the displayed
frequency in English.
32. FREQUENCY TRANSFER BUTTON
In the VFO operation, the frequency and mode stored in a
memory channel (displayed its channel number on the
frequency display), are transferred to the selected VFO.
33. VFO EQUALIZING BUTTON
Instantly sets the frequency and mode of a VFO to the
same as those of the other VFO.
34. VFO SWITCH
Selects either VFO, "'A" or "B", for tuning. Each push of
this button selects VFO A and B alternately.
35. FREQUENCY DISPLAY
The frequency of the IC-R71 is displayed on a luminescent
display tube. Since the 1MHz and 1KHz decimal points are
displayed, the frequency can easily be read. The frequency
indicated is the carrier frequency of each mode in, USB,
LSB, CW, AM and FM, and the mark frequency in RTTY.
The FREQUENCY DISPLAY shows not only the operating
frequency but also mode, selected VFO or memory channel,
and SCAN mode.
@ Shows operating frequency in 6 digits between 10MHz
and 100Hz.
Shows selected VFO; VFO A or VFO B.
Shows operating mode; one of FM, AM, CW, USB,
LSB, and RTTY. °
(4) Shows that the set is in the MEMORY CHANNEL
MODE or not, and the selected memory channel
number. When the set is in the MEMORY CHANNEL
MODE, the letters ''M ch'' are displayed here.
Shows that the set is tuned to an incoming signal fre-
quency within 1KHz on the FM mode. At this time,
the letters "TUNE" are displayed here. (When optional
FM unit is installed.)
@ Shows that the squelch is opened. When the squelch
is opened, the letters ''SIG" are displayed here.
@ Shows that the set is in the SCAN mode. When the set
is in the SCAN mode, the letters "SCAN" are displayed
here.
36. S-METER
Signal strength of an incoming signal is indicated on a scale
of S1 ~ S9 and S9 to $9+40dB, and a linear scale divided
into five.
37. REMOTE CONTROL ENABLE INDICATOR
Iluminates when the REMOTE CONTROL SWITCH is
pushed in.
38. REMOTE CONTROL SENSOR WINDOW
An infrared sensor is installed under this window. This
sensor detects infrared rays emitted from the optical remote
controller to control operating frequency, mode, audio
volume, speech synthesizer, etc.