AOR AR8000 User manual

AR8000 operating manual
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(1) Introduction & accessories
Thank you for purchasing THE NEW CONCEPT AOR AR8000 World Band
Wide Band all mode receiver.
This operating manual is divided into many sections and presented in a logical
order assuming that it will be read section by section following the examples.
However, if you are familiar with the operations of modern mulit-function
receivers you may proceed directly to section 6. Many phrases are repeated
through the manual, while this may make the text a little repetitious, it should
provide clear instructions if you refer directly to a specific section.
Every effort has been made to make this manual correct and up to date. Due
to continuous development of the receiver and by error or omissions anomalies
may be found and this is acknowledged.
Most apparent faults are usually due to accidental misoperation of the receiver,
carefully read all of the manual before deciding to return the receiver for repair.
Although carefully designed, this receiver (like all receivers) suffers from a
degree of internal noises known as spurii. They are a product of the receiver’s
circuitry and do not represent a fault.
This manual is protected by copyright AOR LTD 1994. No information
contained in this manual may be copied or transferred by any means without
the prior written consent of AOR LTD. AOR and the [AOR] logo are trade
marks of AOR, LTD. All other trade marks and names acknowledged. E&OE.
© 1994 AOR LTD.
Operating manual Conventions
Where text appears in [SQUARE BRACKETS] the keys are to be pressed
exactly as shown.
For example: [1] [4] [5] [ENT]
Means press the 1key followed by the 4key followed by the 5key followed by
the enter key.
The arrow keys to the lower left of the keypad are referred to as UP / DOWN or
[UP] [DOWN] keys.
Words contained in speech marks “2VFO” refer to indications displayed on the
Liquid Crystal Display.
Where memory banks etc are empty the indication “- - -” is often displayed.
Sections of “italic text” indicate an advanced function or facility only available
when in EXPERT rather than NEWUSER status, please refer to section 6-3 for
further information.

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1-1 Accessories supplied
4 x AA internal high capacity rechargeable NiCad batteries
Mains charger
DC power lead with cigar lighter plug
16cm semi-flexible wide band
Belt clip with two screws
Hand strap
Operating manual
(2) Table of contents
1 Introduction and accessories ....................... 1
1-1 Accessories supplied ....................................... 1
2 Table of contents .......................................... 2
3 Major features ............................................... 5
4 Precautions .................................................... 8
4-1 Location .......................................................... 8
4-2 Looking after your receiver................................. 9
4-3 Power requirements ......................................... 9
4-4 NiCads and charging ....................................... 10
4-5 Aerial (antenna) connection summary .............. 10
5 Controls and functions .................................. 12
TOP PANEL .................................................... 12
5-1 Aerial (antenna) input ...................................... 12
5-2 Earphone connection ....................................... 13
5-3 [DIAL] - tuning control / selector ...................... 13
5-4 Squelch control ............................................... 13
5-5 Power On/Off & volume control ....................... 14
FRONT PANEL ............................................... 15
5-6 Liquid Crystal Display LCD .............................. 14
5-7 Keypad (extensive information) ........................ 14
5-8 Internal loudspeaker ........................................ 24
LEFT HAND SIDE ........................................... 25
5-9 [FUNC] function key ........................................ 26
5-10 [MONI] monitor key ......................................... 26
5-11 [LAMP] illumination key ................................... 26
5-12 [K.LOCK] keypad lock key ............................... 26
RIGHT HAND SIDE ......................................... 27
5-13 DC 12V - charging and DC input socket ........... 27
REAR CABINET .............................................. 29
5-14 REMOTE RS232 connector ............................. 28
5-15 Battery compartment ....................................... 28
6 Basic manual operation of the receiver ........ 30
6-1 Before starting ................................................. 30
6-2 Switching on .................................................... 30
6-3 Configuration NEWUSER/EXPERT status ....... 31
6-4 Entering frequencies (using keypad) & A=B ..... 33
6-5 Correcting frequency readout during input ........ 35

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6-6 Correcting incorrect frequencies after input ........... 35
6-7 Changing a frequency using the UP/DOWN keys .. 36
6-8 Changing frequency using the [DIAL] .................... 36
6-9 Changing frequency step (AUTO) ......................... 37
6-10 Step offset ............................................................ 39
6-11 Changing receiver mode (AUTO) .......................... 40
6-12 Attenuator ............................................................ 42
6-13 Band scope .......................................................... 43
7 Memory banks & channels ................................. 44
7-1 Storing receive data into memory .......................... 45
7-2 Memory recall ....................................................... 46
7-3 Transfer of memory channels to VFO ................... 47
8 Editing, copying & moving memories ............... 47
8-1 Memory over-write ................................................ 47
8-2 SET EDIT-CH, copying, moving & editing ............. 48
8-3 Memory copy mode .............................................. 48
8-4 Memory copy alternative method .......................... 50
8-5 Memory move mode ............................................. 50
8-6 Memory swap mode ............................................. 51
8-7 Memory change mode .......................................... 53
8-8 Deleting memory channels & banks ...................... 56
8-9 Deleting individual memory channels .................... 56
8-10 Deleting complete memory banks ......................... 56
9 PASSWORD protection of banks ....................... 57
9-1 When the password is first used ........................... 57
9-2 Password access to banks ................................... 58
9-3 Disabling password protection .............................. 58
9-4 If you forget your password .................................. 59
10 SCANNING .......................................................... 59
10-1 Outline introduction to scanning ............................ 59
10-2 Outline of EXPERT facilities ................................. 60
10-3 Scanning considerations ...................................... 60
10-4 Scanning a memory bank ..................................... 61
10-5 Scanning a single memory bank ........................... 62
10-6 Memory bank linking ............................................. 62
10-7 Specifying memory bank linking ........................... 63
10-8 Scanning unlinked banks ...................................... 64
10-9 Scan channel PASS (lockout) ............................... 64
10-10 Memory PASS while scanning .............................. 64
10-11 Memory PASS using memory recall ..................... 64
10-12 EXPERT scan options .......................................... 65
11 SELECT SCAN .................................................... 69
11-1 Select scan while in scan mode ............................ 70
11-2 Select scan while in memory recall ....................... 70
11-3 Select scan using the menu .................................. 71
11-4 Select scan "new" channels using the menu .......... 72
11-5 Deleting individual select scan channels ............... 73
11-6 Deleting all select scan channels .......................... 73
11-7 Start, pause and cancel select scan ...................... 73
12 Priority operation ............................................... 74
12-1 Engaging priority operation ................................... 74
12-2 Changing priority channel parameters .................. 75

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13 SEARCH ............................................................. 76
13-1 Manual search ..................................................... 77
13-2 Program bank search ........................................... 80
13-3 Program search - saving active frequencies ......... 81
13-4 Programming search banks ................................. 82
13-5 Search facilities ................................................... 85
13-6 Search, outline of EXPERT facilities .................... 85
13-7 Linking search banks ........................................... 85
13-8 Searching unlinked banks .................................... 87
13-9 EXPERT search operations ................................. 87
13-10 Deleting program search banks ........................... 90
14 Frequency PASS (lockout) ................................ 91
14-1 Frequency pass during program search ............... 91
14-2 Frequency pass menu ......................................... 92
14-3 Deleting a pass frequency ................................... 92
14-4 Editing a pass frequency ...................................... 93
14-5 Manually entering a pass frequency ..................... 93
14-6 Entering pass frequencies during manual search .. 93
14-7 Deleting all pass frequencies from a bank ............ 94
15 Auto store .......................................................... 95
15-1 Auto store in newuser status ................................ 95
15-2 Auto store in expert status ................................... 97
16 Power save ......................................................... 97
16-1 Changing power save parameters ........................ 97
17 Special functions ............................................... 99
17-1 Lock detect .......................................................... 99
17-2 Squelch detect ..................................................... 99
17-3 Audio wait ........................................................... 99
17-4 Audio level ........................................................... 100
17-5 Level wait ............................................................ 100
18 Remote control RS232 ....................................... 100
18-1 Setting RS232 parameters ................................... 101
18-2 Changing data input to keypad ............................. 101
19 Clone (copy) data between two AR8000 ............ 102
19-1 Clone (copy) in newuser status ............................ 102
19-2 Clone (copy) in expert status ............................... 102
20 Trouble shooting ............................................... 103
20-1 Microprocessor reset ........................................... 103
20-2 Other possible apparent operating problems ........ 104
20-3 Other LCD indications & error messages ............. 105
21 Optional accessories ........................................ 106
22 Aerials (antennas) & earth systems .................. 107
23 Propagation - short wave bands ....................... 112
24 Specification ...................................................... 115

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(3) Major features
General
At first glance the AR8000 in it’s static form may look no different to any
modern hand-held wide range receiver, but the similarity ends there... just as
soon as the receiver is switched on!! Initially you are greeted with the opening
welcome message on the AR8000 multi-function liquid crystal display
“WELCOME TO THE WORLD OF AR8000 RECEIVER”, in a similar way to a
sign on message displayed by your personal computer. This new experience
immediately demonstrates that the AR8000 is no ordinary radio but THE NEW
CONCEPT in radio design.
Internal construction is of a high quality modular surface mount design with the
only wires being those connecting to the internal loudspeaker. This ensures
the highest performance and reliability.
Frequency coverage and modes
The AR8000 is a highly sensitive hand-held receiver boasting the widest
frequency coverage of 500kHz to 1900MHz without gaps in the range (actual
acceptable frequency input from 100kHz). Step size is programmable in
multiples of 50Hz for smooth tuning. The all-mode reception provides AM,
USB, LSB, CW, NFM and WFM.
Step offset is a useful facility for correctly tuning through bands with unusual
offsets and channel spacing.
As you might expect from a radio receiver of this calibre, an independent
4.0 kHz SSB filter is fitted as standard and the USB/LSB/CW modes use true
carrier re-insertion with non-offset frequency readout.
Auto-Mode tuning
Comprehensive band plan information specific to the target market area has
been programmed into the AR8000 receiver. This inclusion will greatly simplify
frequency entry and search programming. The receiver will “automatically”
select the appropriate mode and channels step. Of course, should you wish
then both the mode and channel step may be manually changed when
required.
Custom ferrite bar aerial
A custom manufactured ferrite bar aerial has been neatly installed into the
AR8000 cabinet to provide a suitable aerial for medium wave reception.

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2VFO
Twin VFO frequencies (A & B) may be displayed on
the LCD simultaneously, one providing a stand-by
frequency available for quick transfer (similar to
commercial aviation built-in radio transceivers). The
two VFO systems operate independently of each
other and store frequency, mode, channel step, step
offset and attenuator status.
Alphanumeric Display
Each memory channel and search bank can be given
a specific title using alphanumeric comments up to
seven characters in length. The addition of com-
ments which may be entered via the keypad/rotary
encoder or through the computer port greatly eases
the identification of radio channels or stations.
The dot matrix display provides additional information
such as frequency readout, S-meter and band scope.
When entering data into the receiver (such as
frequency), the AR8000 display provides helpful text prompts to ease
operation.
Band Scope
In VFO mode the AR8000 can check adjacent
channels for activity (five channels each side of the
centre frequency). The information is displayed by
means of vertical bars (like a graph) on the LCD and
is updated every five seconds or when the DIAL is
turned.
Wide variety of search & scan facilities
Great flexibility is offered by the microprocessor. Search & scan may be
selected using various parameters such as:
Select scan - where memory channels are “tagged” for scan, this is useful
when scanning is required for only a few memory channels.
Delay search / scan - where the receiver will resume scanning when the
channel clears after a predetermined time (default 2 seconds, programmable
range 0.1 to 9.9 seconds, HOLD or OFF).
Audio search / scan - the receiver checks the channel for valid modulation
(voice) appropriate to the selected mode, default is OFF.

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Free search - the receiver will pause on a busy channel for a predetermined
length of time and will resume searching after the time has expired or when the
channel clears which ever is first. The programmable range is 1 to 99 seconds
and default is OFF. Free search is ignored when the “delay hold” facility has
been selected.
S-LEVEL search / scan - the receiver will stop on a busy channel only when
the signal is above the predetermined signal level. The programmable range is
1 to 7 bars on the S-meter and default is OFF.
Auto store - automatically writes new active channels from search into
memory bank “J”. The facility may be programmed ON/OFF, the default is ON
and may be selected through the configuration menu.
Memories and search banks
A total of 1000 memory channels are provided which are divided into 20
banks, each having 50 channels. The AR8000 will search and scan at a very
respectable (and fast) maximum speed of approximately 30 increments per
second.
In addition there are 20 programmable search banks, 10 of these banks
are preprogrammed during manufacturer for convenience but all may be
reprogrammed.
“Special” frequencies may be entered into memory banks where they may only
be recalled by entering a user definable PASSWORD... this should stop
preying eyes.
The data contents of memory and search banks are held in an EEPROM so
that no backup battery or capacitor is required for memory retention.
Edit mode
The stored data may be quickly and easily changed or deleted in edit mode.
Priority
Initially any of the 1000 memory channels may be selected as the priority
channel. However, once programmed the selected data will not be lost even if
the data in the memory channel is changed... this makes the priority channel
almost like an additional memory channel location.
NEWUSER and EXPERT status
Two levels of operation may be selected to help ease familiarisation with the
extensive range of facilities available.

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Copy (CLONE) between two AR8000 receivers
The stored memory and search data may be transferred from one set to
another using an optional cable / interface (CU-8232).
Full computer control
The computer control port may be connected via an optional cable / interface
(CU-8232) to a computer for remote control of the receiver (control software
will be required).
Many other features
The AR8000 is truly full featured, among other facilities are keypad beep On/
Off, plus keypad lock. Illumination of the keypad and side panel may be
switched and may be set to permanently On for mobile operation or use in low
level lighting. Variable battery power save to enhance operational time.
Programmable FUNCTION and 2nd FUNCTION key to suit your operating
style. Top facing 3.5mm standard earphone / speaker socket. Tape recorder
audio and switching (optional interface CR-8000 & cable required). Keypad
microprocessor reset.
(4) Precautions
4-1 Location
Do not use or leave the receiver in direct sunlight (especially the LCD). It is
best to avoid locations where excessive heat, humidity, dust and vibration are
expected. Always treat the receiver with care.
Take care to avoid spillage or leakage of liquids into the receiver and AC
charger. Special care should be taken to avoid liquid entering via the power
jack and earphone sockets. Always remove batteries if the receiver is not
going to be used for a while.
Avoid static discharge from discones or long wire aerials, earth to a central
heating radiator or similar earthing point in order to discharge the wire before
connection to the receiver. Always disconnect and earth any external aerial
system if an electrical storm is expected.
Avoid connecting / disconnecting the power connection or batteries with the set
switched On. Avoid a rapid switch On/Off sequence. If switched Off, leave at
least two seconds before switching On again. Ensure the mains plug
connections are tight and other DC connections (such as cigar lighter plugs)
secure.
Avoid strong RF fields from nearby transmitters. If in doubt, disconnect the

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AR8000 from the aerial and switch the set Off.
4-2 Looking after your receiver
Always keep the receiver free from dust and water. Use a soft dry cloth to
gently wipe the set clean. Never use chemicals such as benzine or thinners
which will damage certain parts.
4-3 Power requirements
The AR8000 is designed for operation from internal NiCad batteries, internal
dry batteries or an external DC supply of 11 - 16V DC at approximately 300mA
minimum.
Always use the mains charger provided or a regulated DC power supply of
13.8V @ 300mA or more using the provided DC connecting lead. NEVER
CONNECT THE AR8000 DIRECTLY TO THE MAINS SUPPLY. Always
switch the receiver Off when connecting or disconnecting the receiver.
Note: The DC input socket uses a standard dual concentric 1.3mm connector.
The connector is CENTRE POSITIVE (which is the RED terminal of most DC
power supplies). The outer connector is NEGATIVE - ground.
The UK charger has two cables attached. One is terminated in the appropriate
power jack plug to fit the DC input socket of the AR8000. The second has two
bared wires ready for connection to a standard 3-pin mains plug. A 3 Ampere
fuse should be used in the plug and the cable is colour coded as follows:
Brown: Live
Blue: Neutral
The AR8000 charger has no connection to the EARTH pin of the mains plug.
However should you be using the AR8000 at home with an external aerial, a
separate earth connection may be made between the outer earth connector of
the BNC plug and water pipe, central heating system radiator or external earth
rod. If fitting a separate external earth rod, consider the implications carefully
if your mains supply uses a Protective Multiple Earth (PME) system. If in
doubt consult an experienced electrician. Never earth to a gas pipe!
Always disconnect the charger from the AC mains supply when not in use.
If using dry batteries (Alkaline or Manganese), always remove the batteries
when exhausted or if the AR8000 is not going to be used for a while. This will
avoid leakage which could seriously damage the receiver.
Access to the battery compartment is via a removable sub-panel on the rear
panel using a downward motion. Always switch the receiver Off when inserting
or removing batteries. If fitting batteries always select a quality brand, 4 x AA
size 1.2 or 1.5V cells are required.

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4-4 NiCads and charging
Before operating, charge the internal NiCad batteries using the supplied
charger for approximately 16 hours.
The low battery indicator “LOW BATTERY” will
provide only a short period of warning of low battery
power when used with NiCad batteries due to the
characteristics of NiCad cells. A longer warning
period will be provided when using Alkaline batteries.
Background noise may still be heard from the
loudspeaker even though the batteries are exhausted,
usually the Liquid Crystal Display or receiver fails to
operate in this condition.
The “LOW BATTERY” indication appears when the battery voltage drops to
around 4.5V and the “BATT ERR” indication appears around 3.75V. Of course
these levels are only approximate and values may vary from set to set.
NiCads are prone to “memory effect”, as a result they may have to be cycled
(fully charged then used until flat) 3 or 4 times before they provide a truly full
period of operation. Once charged, you should never again leave the NiCads
in a flat condition. Although you may charge the NiCads in order to “top up”
their capacity if you have only used the set for an hour or two, the NiCads
should be cycled at least once per month to ensure continued long term
reliability.
Important!
Do not overcharge the NiCad pack, 16 hours is sufficient from flat. In severe
cases of overcharging high temperatures may be generated, this can result in
damage to the NiCads and to the receiver. If this point is ignored, there is a
small but potential danger of personal injury due to explosion. Never short
circuit NiCad batteries, the effect is similar to overcharging but happens very
quickly. Never attempt to charge dry batteries.
Should a poor connection appear in the charging or DC lead, the message
“BATT ERR” may be displayed on all four lines of the LCD.
4-5 Aerial (antenna) connection summary
The aerial input is via a high quality BNC 50 OHM socket. The standard
supplied 16cm rubber whip should provide good result across most of the
receiver’s frequency coverage.
The BNC socket should also permit straight forward connection to almost any
type of receive aerial setup.
Ferrite aerial
An internal ferrite bar aerial provides reception on the medium wave band

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(frequencies such as 1.215 MHz = 1215 kHz). If signal strength appears weak,
try rotating the receiver as the bar aerial is directional.
The internal ferrite bar aerial should provide adequate results in city and
high population areas or when visiting airshows which operate a
commentary service on medium wave. Better results may be achieved
by using an external aerial.
It is not possible to further increase sensitivity on medium wave firstly due to
the up-conversion receive circuit employed (which is required for high quality
VHF-UHF reception) and secondly due to the potential noise from the
microprocessor and LCD driver which are located close to the ferrite aerial
(being a compact hand-held design).
Aerial attenuator
An aerial attenuator system allows selection of 0dB or 10dB. This is especially
useful in reducing the potential for breakthrough when using external aerial
systems and for achieving optimum audio quality for SSB and short wave
operation.
Do remember, if considering the use of an external aerial, there will be a
greater chance of signal overload and breakthrough. While this will not
damage the receiver in average use, it may degrade the receive performance
due to the effects of “signal mixing”.
VHF - UHF discone aerials
Ideally, separate aerials should be employed for each frequency or band of
interest. Of course, except for government listening stations this is totally
impractical. For this reason most people choose an externally mounted
discone aerial such as the AOR DA3000 aerial. The DA3000 has a usable
coverage of 25 to 2000 MHz.
Shortwave long wire aerials
For the shortwave bands a different type of aerial will be required. The most
common form is the random long wire, please see sections 22 & 23 on aerials
and propagation for further information.
Aerial Tuning Units (ATU)
An ATU can improve the selectivity of any shortwave receiver when connected
to long wire aerials. This valuable extra selectivity is achieved by the ATU
rejecting out of band signals enabling the receiver to “single out” one band of
frequencies while rejecting potentially strong unwanted transmissions.
An ATU is usually constructed in a small box with about two or three controls
on the front panel. One disadvantage however is the need to constantly retune

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the ATU when changing frequency. An ATU of this type has no active circuitry
so is known as a passive device.
Active desktop loop aerials
Usually designed for the shortwave bands (such as the AOR LA320). Loop
aerials have the advantage of small size when compared to long wire aerials
and being within easy reach of the operator it can be rotated to provide
directivity. The circuitry offers a small level of gain with the advantage of
selectivity similar to an ATU.
For further information please refer to sections 22 & 23 of this manual
regarding aerial and earth systems.
(5) Controls and functions
The AR8000 receiver is housed in an attractive grey plastic cabinet. Controls
for operation are located on the top, front and left hand side of the cabinet.
Top Panel
5-1 Aerial (antenna) input
The aerial input is via a high quality BNC 50 OHM socket. The standard
supplied 16cm rubber whip should be connected to this point and provide good
result across most of the receiver’s frequency coverage.

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5-2 EAR - Earphone / speaker connection
This 3.5mm mono socket permits connection to an external earphone, headset
or speaker of 8 OHM impedance or greater. When this earphone socket is
used, the internal speaker will be automatically disconnected.
5-3 DIAL - tuning control / selector
The DIAL control is prominently located on the top of the
cabinet for ease of use. This control changes the received
frequency up and down in whatever step increment is selected and operates as
a “selector” when entering certain data though menus. This type of rotary
control is often referred to as the “VFO”.
Being a mechanical device, it is not uncommon for operations to be
occasionally missed and this does not constitute a fault (unless excessive).
5-4 SQ - squelch control
The squelch control is used to eliminate unwanted background
noise when monitoring a normally inactive frequency and is
used by the AR8000 microprocessor to determine when a channel is “active”
(busy). The receiver cannot scan or search when the background noise is
present.
The squelch control requires careful setting to achieve optimum operating
performance. Rotate the control clockwise until the background noise just
disappears (threshold), this is the most sensitive setting of the control. In
practice the control is usually rotated a little further clockwise beyond the
threshold point to prevent the receiver from stopping on noise or very weak and
unreadable signals.
If the control is rotated too far clockwise then weaker signals will be totally lost
and only local strong signals will be heard.
When the squelch control is rotated anticlockwise so that background noise is
audible, the squelch is referred to as being “OPEN”. In a similar manner, when
the squelch control is rotated clockwise so that the background noise is muted,
the squelch is referred to as being “CLOSED”.
The squelch is not usually used when listening to short wave transmissions
due to the relatively high short wave background noise levels nor in WFM
mode. The usual setting for the control when listening to short wave or WFM
is fully anticlockwise (squelch open).
Note: Even when the squelch is fully CLOSED a low level background noise
may still be audible. This is because the receiver’s audio amplifier circuit is
permanently operational in order to provide fast search/scan rates and an
efficient squelch opening characteristic. This phenomenon is common with
other hand-held receivers on the market today.

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5-5 PWR / VOL - On/Off switch and volume control
The combined volume control and power switch is located on
the top face of the cabinet. This control is used to set the required
audio output from the receiver. When rotated fully clockwise the volume is at
maximum, when rotated fully anticlockwise the volume is reduced to minimum.
At the fully anticlockwise position the power On/Off switch is activated with a
“click”.
Front panel
5-6 Liquid Crystal Display (LCD) - dot matrix
The AR8000 uses a revolutionary high contrast new dot matrix LCD. Due to its
mechanical construction the LCD is best viewed from directly in front of the
receiver, a fairly wide viewing angle is maintained to the left and right hand
sides but is quickly reduced from below and particularly from above the
display.
The LCD has four lines of eleven character positions
each of which consists of 5 x 8 pixel segments. A full
test pattern may be displayed by holding the [0] key
while switching the receiver On until the sign-on
welcome message has ended. To remove the test
pattern simply switch the receiver Off/On.
The dot matrix display provides a more conventional
format of number than the conventional seven segment LED/LCD format,
compare the numbers 0, 4, 7 etc. Alphanumeric comments are also available
in menus to ease programming and identification of memory and search
banks. Graphical information may also be displayed for signal meter and band
scope.
Attractive green rear illumination of the LCD (and keypad / side panel) is
switchable for use in locations of low level lighting.
The LCD will provide frequency readout to hundreds of Hz (last digit on the
right) although the receiver is capable of tuning in smaller steps of 50 Hz.
5-7 Keypad
The front keypad comprises of twenty press keys laid in a grid four horizontal
and five vertical. The keys are multi-function and are used to input frequency
and other operational data in conjunction with the side panel [FUNC] function
key and [DIAL].
Attractive green rear illumination of the front keypad, side panel and LCD is

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16
switchable for use in locations of low level lighting.
The basic operational description of each key is as follows:
[SRCH] - search key
When first pressed initiates the search process and “SRCH” is displayed at the
top left of the LCD.
When [SRCH] is pressed a second time during search, the SEARCH process
is cancelled and the current search frequency is left as a single frequency
readout on the LCD. This can be useful should you wish not to have 2-VFO
display but wish for a single frequency display... just press [SRCH] twice while
searching.
If the search process had stopped on an “active” frequency when [SRCH]
was pressed for the second time, the process would be forced to continue
searching passed the busy frequency.
When in SEARCH mode, the display legend “SRCH” appears on the LCD.
If the sequence [FUNC] [SRCH] is keyed while in search mode the receiver
enters the “SET SEARCH” menu where search banks may be linked and
unlinked.
While in search mode and stopped on an interesting active (busy) frequency,
press [FUNC] [2VFO] to transfer the busy frequency to the “active” (top) VFO
and revert to VFO mode.
[SCAN] [M.R] - scan / memory recall key
When pressed the first time initiates memory recall, the display legend “M.RE”
appears on the LCD. The numeric keypad may then be used to recall a
specific memory channel or the [DIAL] rotated to scroll through the contents.
To transfer a memory channel to VFO press the [ENT] key.
When [SCAN] is pressed a second time (this means pressing while “M.RE” is
displayed), the receiver enters memory SCAN mode. When
SCAN mode has been entered, the display legend “SCAN” appears on the
LCD.
When [SCAN] is pressed while in SCAN mode (“SCAN” displayed), the SCAN
process is cancelled and the current SCAN frequency is left on the LCD.
If the scan process had stopped on an “active” channel when [SCAN] was
pressed for the second time, the process would be forced to continue scanning
passed the busy channel.
If the sequence [FUNC] [SCAN] is keyed while in SCAN mode the receiver
enters the “SET M-SCAN” menu where memory banks may be linked and
unlinked.
While in scan mode and stopped on an interesting busy channel, press
[FUNC] [2VFO] to transfer the busy channel to the “active” (top) VFO and

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revert to VFO mode.
[2-VFO] [A=B] - twin VFO / equalise memory /
manual search key
The AR8000 receiver has a 2 VFO system being identified as “A” and “B” on
the LCD to the left of the frequency readout. The term VFO historically means
“Variable Frequency Oscillator” and today refers to a tunable data store which
contains frequency, mode, channel step, step offset and attenuator informa-
tion.
Both VFO frequencies are displayed in parallel format on the LCD one above
the other. The “active” VFO (the one which is currently receiving) is displayed
on the second line and the “stand-by” VFO on the third line below.
When the AR8000 is in a programming mode other than 2VFO such as
SEARCH, SCAN or DATA ENTRY, this key places the set into 2VFO mode.
The display legend “2VFO” appears at the top left hand corner of the first line
of the LCD. The same line will indicate whether the active VFO has the
attenuator switched On signified by the letter “A” to the right of “2VFO”. The
top right hand corner of the LCD indicates the current mode (AM, NFM, WFM,
USB, LSB, CW) of the active VFO.
The second line of the LCD displays the ACTIVE VFO frequency.
The third line of the LCD displays the STAND-BY VFO frequency.
The fourth line of the LCD indicates whether the active VFO squelch is open
using the legend “S”, to the right is the signal strength presented as a vertical
bar graph. The stronger the signal then the larger the graph, if there is no
signal present the fourth line will be blank. It is quite common for the first
three signal meter segments to appear due to background band noise
even when no signal is present.
If the [2VFO] key is pressed while in 2VFO mode, the active and stand-by VFO
change positions. i.e. VFO A becomes stand-by and VFO B active and visa
versa whenever the [2VFO] key is pressed.
If the sequence [FUNC] [2VFO] is keyed while in 2VFO mode the receiver
equalises the data in both VFOs so that their contents are identical to the
active VFO (top VFO). Both VFO displays will appear identical. This is
particularly useful when quickly setting up a manual search.
If the [2VFO] key is pressed and held for more that one second, the receiver
enters MANUAL SEARCH. The frequency of VFO A and VFO B must be
different or no search will take place. If the mode and channel step size are
different in VFO and VFO B then the active VFO data will be used to form the
parameters for search.
When MANUAL SEARCH mode is entered the display legend “MANU SRCH”
appears on the third line of the display.
Should the receiver find an interesting busy channel, press [ENT] to save the
data into a memory channel. Please refer section 14 FREQUENCY PASS

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18
should a permanently busy channel be encountered. The UP and DOWN keys
may be used to force the receiver to continue searching from a busy channel
and to reverse the direction of search.
While in search or scan modes and stopped on an interesting busy channel,
press [FUNC] [2VFO] to transfer the busy channel to the “active” VFO and
revert to VFO mode.
To return to 2VFO mode, press the [2VFO] key.
Should you prefer only a single frequency to be displayed press [SRCH]
[SRCH] while searching or press [SRCH] [ENT] if stopped on a busy
frequency..
[UP>] - UP / move key
This key is used to force the receiver to continue search / scan from a busy
channel and to reverse the direction of search / scan should the receiver be
tracking downward. The key will also act as an upward tuning control just like
DIAL.
The key is used to select menu options under certain circumstances.
The key may also be used to backspace delete incorrect frequency entry
during the input sequence via the numeric keypad. It may also be using in
conjunction with the [FUNC] key to edit the active VFO frequency.
[DOWN<] - DOWN / move key
This key is used to force the receiver to continue search / scan from a busy
channel and to reverse the direction of search / scan should the receiver be
tracking upward. The key will also act as a downward tuning control just like
DIAL.
The key is used to select menu options under certain circumstances.
The key may also be used in conjunction with the [FUNC] key to edit the active
VFO frequency.
[1] [A] [ATT] Numeric 1 / Bank A / ATTENUATOR key
This key acts as a numeric 1 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank A/a.
If the sequence [FUNC] [1] is keyed, the attenuator is toggled On/Off. The
ATTENUATOR is a useful feature to aid with the reduction of interference
caused by the presence of strong signals.

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19
[2] [B] [STEP] Numeric 2 / Bank B / STEP key
This key acts as a numeric 2 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank B/b.
If the sequence [FUNC] [2] is keyed, the tuning STEP size may be
selected.
[3] [C] [MODE] Numeric 3 / Bank C / MODE key
This key acts as a numeric 3 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank C/c.
If the sequence [FUNC] [3] is keyed, the receive MODE may be selected.
[4] [D] [PRI CH] Numeric 4 / Bank D / Priority operation
This key acts as a numeric 4 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank D/d.
If the sequence [FUNC] [4] is keyed, the receive PRIORITY channel is
activated / deactivated as a toggle. The legend “P” appears on the top line of
the LCD to signify that priority channel watch has been activated.
If the sequence [FUNC] then hold [4] for more than one second is keyed,
the “SET PRI CH” set priority channel sub menu is activated. The priority
channel may be chosen (which bank / number) with sampling time and
accompanying text. Once a memory channel has been selected for priority,
its data is held in a special priority store so that the information will
remain intact even if the original memory channel data is later revised.
[5] [E] [S SCAN] Numeric 5 / Bank E / Select Scan key
This key acts as a numeric 5 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank E/e.
If the sequence [FUNC] [5] is keyed, SELECT SCAN will be activated. The
legend “SEL” appears at the top left of the LCD to indicate select scan
activation. Select scan only scans those specific channels which have been
identified (tagged) using the [FUNC] [PASS] select scan procedure. This is
very useful to allow the rapid selection of a mixture of memory channels
irrespective of memory banks for specific scanning applications. Press [2VFO]
to cancel SELECT SCAN and return to 2VFO mode.

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20
[6] [F] [S PROG] Numeric 6 / Bank F / Search program
This key acts as a numeric 6 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank F/f.
If the sequence [FUNC] [6] is keyed, the SEARCH PROGRAM menu will be
activated. The legend “SRCH PROG” appears on the top line of the LCD to
indicate activation. The data programming or reprogramming of search banks
may be input through this menu.
While in VFO and search program (menu step size input), the [PASS] key
adds the legend “+” indicating STEP OFFSET which is a useful facility for
following unusual offsets such as a 25 kHz bandplan with 12.5 kHz offset.
[7] [G] [B SCP] Numeric 7 / Bank G / Band scope
This key acts as a numeric 7 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank G/g.
If the sequence [FUNC] [7] is keyed while in single VFO frequency display or
two VFO frequency display, the BAND SCOPE will be activated to check for
adjacent channel occupancy. This bar graph spectrum display uses the whole
eleven horizontal positions of the third line of the LCD (five channels either side
of the centre frequency). The stronger the signal then the higher the bar graph.
The band scope channel spacing is determined by the receive mode (NFM,
USB etc).
When the [DIAL] is turned or every five seconds the display will be updated.
This can be a useful feature if the “exact” frequency of a specific service is not
known. There will be a brief interruption to the receive station (centre
frequency) every five seconds as the display is updated.
To deactivate the bandscope, repeat the key sequence [FUNC] [7] or press the
[2VFO], [SRCH] or [SCAN] keys.
[8] [H] [EDT CH] Numeric 8 / Bank H / Edit memory channel
This key acts as a numeric 8 when entering frequencies via the keypad.
In search, scan and memory modes this key is used to identify bank H/h.
If the sequence [FUNC] [8] is keyed the edit options menu and sub menus
may be accessed. Initially the legend “SET EDIT-CH” is displayed on the first
line of the LCD.
Edit mode enables memory data to be changed (edited) & data of two memory
channels to be swapped (exchanged).