Contents
Main
~
2
CONTENTS
17
1. Wide dynamic range
9. Switchable AGC time constant
10. All mode squelch 11. Built-in RF power/SWR meter
2. General coverage reception from 100 kHz to 30 MHz
3. Automatic antenna tuner
2.
2-1. PRECAUTION
2-2. FIXED STATION
~:~~~~~~.:::~::::~ S -4 4 ~ S
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e
2-3. MOBILE
justment.
I/. U " II n n'
D
~l
@ RF gain control
This control adjusts the gain of the receiver high- frequency amplifier section.
radio has been reduced.
@ AF gain control
~ UP/DOWN switches
Pressing the UP switch increases the frequency, and pressing the DOWN switch decreases it.
@ AUTO/THRU switch
@ Standby switch
~ ALC/PWR/SWR meter switch
modes.
@ ATT (Attenuator) switch
@ NB {Noise Blanker} switch
@ VOICE switch
(6)'\
{()\
@ ACC 2 jack
Terminal numbers and their applications are as follows:
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NC
P I'f K;r""" TT
KEP
SrlIEl.D
~
~or
--' ='=---= = = = I
@
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C::::DJ:r::J
t ~1ir;; , '-' II ,-, ,-, ,-, , ,
, ,. '-' '-' ,_,. LI
two methods:
[:::rmJ::J
c::::m:1:::J
Adjust the CAR control until the meter deflection is within the ALC zone.
tained.
3-3-3. FM mode
changed.
3-4. AUTOMATIC ANTENNA TUNER (The AT unit AT -440 is required for this function.)
3-5. DUAL DIGITAL VFO's
:::::J
, '-' ",:- ,-,
~
,- L/. '-' '-' ,_,. U
3-7. SCAN
OFF.
Two methods may be used to clear a memory
, ,. , , -'. U
-
again be scanned.
~
and then the 2 key.
.
t
4. You can stop scanning, or resume scan using the
memory scan.
3-7-2. Program scan
\
4.
4-4. CIRCUIT BOARD DESCRIPTION
20
system.
4-1. GENERAL DESCRIPTION
5.
5-1. GENERAL INFORMATION
21
5-2. SERVICE
5-3. CLEANING
2. C~~;;~~ ~~i~;.' I
5-6. MICROPROCESSOR RESET
5-5. MICROPROCESSOR BACK-UP LITHIUM BATTERY
5-8. ADJUSTMENTS
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Page
6.
6-1. CRYSTAL FILTER INSTALLATION
27
Center frequency Passband width Attenuation bandwidth Guaranteed attenuation
-==--
~
28
T 6 ~Hz
OPTIO:~~;~
--+-
quency
29
6-3. INTERFACE IC KIT IC-10 INSTALLATION
6-3-2. Operation
6-4. OTHER ACCESSORIES
Page
-
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f
Page
9-2. ACCESSORIES
10.
(1) Antenna
10-1. Antenna installation
Fig. 10-1
10-2.MOBll OPERATION 10-2-1. Installation
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Page
10-3. RADIO FREQUENCY AllOCATION
~~
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46
Radio Frequency Allocation
bands
