Operating Controls; Front Panel - Icom IC-R71A Instruction Manual

SECTION 4 OPERATING CONTROLS .
4-1 FRONT PANEL
(DIMMER SWITCH
@SCAN START/STOP BUTTON
@®)S-METER
@AGC TIMING SWITCH
@NB TIMING SWITCH
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i NB LEVEL AGC wih Pain EL
OFF Ba ON Nn
2 NOISE BLANKER———qu@ ,
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©) MODE SELECT SWITCHES ms
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@POWER SWITCH —————e ae me Paine cis
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@FUNCTION Key _—___ =a,
(PHONES JACK ) {
(RECORDER JACK
@®PREAMP/ATT SWITCH
@AF GAIN CONTROL
@RF GAIN CONTROL
@FILTER SWITCHES
(SQUELCH CONTROL
1) TONE CONTROL
(® MODE SELECTIVE SCAN SWITCH
(REMOTE CONTROL SWITCH
1. NB LEVEL CONTROL
Controls the threshold level of the noise blanker. Adjust
the controls so that incoming noises will be disappeared.
2. NB (NOISE BLANKER) SWITCH
When pulse type noise such as automobile ignition noise is
present, push this switch in. The noise will be reduced to
provide comfortable reception.
3. NB TIMING SWITCH
The noise blanker blanking time can be selected NORMAL
and WIDE by this switch. It will be effective against any
types of noises.
4. AGC TIMING SWITCH
For changing the time-constant of the AGC (Automatic
Gain Control) circuit. By setting the switch to slow posi-
tion, the AGC voltage is released more slowly. Set the
switch to provide comfortable reception.
@)FREQUENCY DISPLAY
@)VFO SWITCH
@VFO EQUALIZING BUTTON
@2FREQUENCY TRANSFER BUTTON
G)SPEECH SYNTHESIZER SWITCH
@REMOTE CONTROL
ENABLE INDICATOR
Come REMOTE CONTROL
; SENSOR WINDOW
BO0KEY PAD
- (26) MEMORY
ae WRITE/CLEAR
BUTTON
@PBT CONTROL
. @)NOTCH FILTER CONTROL
@NOTCH FILTER SWITCH
@) MEMORY CHANNEL SELECT
SWITCH
@ VFO/MEMORY SWITCH
@DIAL LOCK SWITCH
@BAND SELECT FUNCTION SWITCH
@ TUNING RATE SWITCH
2) TUNING CONTROL
When the switch is in the OFF position, the AGC function
is turned OFF and the S-meter does not swing even if a
signal has being received. (The AGC does not actuate on
the FM mode.)
5. MODE SELECT SWITCHES
Selects any one of five operating modes by simply pushing
the desired switch. Additionally, the AM switch has dual
function as follows.
1. AM For AM operation.
2. FM Pushing the FUNCTION KEY first, then the
AM switch, the FM mode is selected.
6. POWER SWITCH
This switch is a push-lock type switch which controls the
input AC power to the set. When the switch is pushed in
and locked, power is supplied to the set. The switch is
pushed again and released, the power to all circuits is cut.