AOR AR7030 User manual

AR7030 OPERATING MANUAL PAGE 1
1 Contents
2 Introduction, overview & quick reference .... 2
2-1 Accessoriessupplied
2-2 Overview - Read this if nothing else
2-3 Quick reference
2-4 Menu tree
2-5 Remote controller quick reference
3 Major Features ............................................... 7
4 Precautions .................................................... 8
4-1 Location
4-2 Looking after your receiver
4-3 Power requirements
4-4 Aerial(antenna)connection
5 Controls and functions .................................. 9
Front panel:- ................................................... 9
5-1 On/Off power switch
5-2 Liquid Crystal Display (LCD)
5-3 Main rotary tuning control - MAIN DIAL
5-4 Fasttuningbutton
5-5 Modeselection buttons
5-6 Volume control
5-7 Spin-wheel
5-8 Generalbutton
5-9 Memory menu button
5-10 RF and IF settings button
5-11 Filter menu button
5-12 Headphone socket
5-13 Bail bar
5-14 Internalspeaker
Rear panel:- ................................................... 10
5-15 Computer control socket
5-16 Auxiliaryequipmentsocket
5-17 DC power input
5-18 External speaker output socket
5-19 Display contrast adjustment
5-20 Ground(chassis)connection
5-21 Wire aerial connection
5-22 Antennaselectionswitch
5-23 50 OHM aerial socket
Infrared controller:- ....................................... 12
5-24 Filter change key
5-25 PBS change key
5-26 Treble change key
5-27 Bass change key
5-28 Increase and decrease keys
5-29 Tune-up and Tune-downkeys
5-30 Volume increase and decrease keys
5-31 Store into memory key
5-32 Memory preview key
5-33 Change VFO key
5-34 Mode select keys
5-35 Number keys
5-36 Backspace key
5-37 Clear key
5-38 Memory recall key
5-39 Frequencyentry keys
6 Receiver operation - Main functions ............ 14
6-1 Firstswitch-on
6-2 Filtercalibration
6-3 Memoryrestoration
6-4 Changingreceive frequency
6-5 Changing reception mode
6-6 IF filter bandwidth selection
6-7 Passband Shift (PBS)
6-8 Audio tone controls
6-9 RF Gain (Attenuator and Preamp)
6-10 Automatic Gain Control (AGC)
6-11 IF Gain control
6-12 Squelchcontrol
6-13 Beat Frequency Oscillator (BFO)
7 VFO functions ................................................ 22
7-1 Tuning control LOCK
7-2 Selecting VFO-A and VFO-B
7-3 Dual VFO operation
8 Memory facilities ........................................... 24
8-1 Preview memory contents
8-2 Store into memory
8-3 Recall from memory
8-4 Memoryscanning
8-5 Memorytechnical details
9 Setup, Timer and Config menu options ....... 28
9-1 Setup menu options
9-2 Timer settings
9-3 Setting the clock
9-4 Config menu options
10 Optional accessories .................................... 30
11 Aerials (Antennas) and earth systems ......... 31
12 Propagation - short wave bands .................. 32
13 Technical specification ................................. 33
13-1 Blockdiagram .............................................. IBC

PAGE 2 AR7030 OPERATING MANUAL
2 Introduction
ThankyouforpurchasingtheAORAR7030highdynamic
range, short wave, all mode receiver. The AR7030 is
designed using the very latest DDS (Direct Digital
Synthesis) technology to ensure the highest levels of
performance and reliability. A TCXO (Temperature
Compensated Crystal Oscillator) is provided for high
stability.
To get the best possible results from your AR7030 we
recommended that you carefully read this manual and
familiariseyourselfwiththereceiver. Many apparentfaults
are often due to accidental mis-operation of the receiver
so, if you think there is a problem, carefully read all of the
manual before deciding to return the receiver for repair.
Every effort has been made to make this manual correct
and up to date. Due to continuous development of the
receiverand by errororomission anomalies maybefound
and this is acknowledged.
© This manual is protected by copyright AOR
Manufacturing Ltd 1995, 1996. No information contained
inthis manual may becopiedor transferred by any means
without the prior written consent of AOR Ltd. AOR and
the logo are trade marks of AOR Ltd. All other
trade marks and names acknowledged. E&OE
2-1 Accessories supplied
Mainspower supply
Infrared remote controller and batteries
Operatingmanual
2-2 Overview - read THIS if nothing else
The AR7030 receiver pushes forward the frontiers of
performance and microprocessor operation. In order to
get the very best out of the receiver you will need to
carefully read through all the sections of this handbook,
however there are a few points worth noting first:-
a. The receiver has been designed to be compact and
robust enough for transportable operation, and as such
there are relatively few front panel controls. The infrared
remote controller should be considered as an extension
of the front panel, offering single button access to many
primary functions. The receiver can be operated without
the infrared controller but more button presses may be
required to perform the same operation.
Theinfrared control input is accepted bysensors on both
the front and rear panels of the receiver. If you cannot
reliably enter commands with the controller in close
proximity to the front panel, move it to one side of the
receiverand make sure that an object behind the receiver
will provide a reflection into the rear sensor. The infrared
controller is powered by two AAA size 1.5V batteries
(supplied) which have to be fitted before it can be used...
observe the polarity carefully.
You cannotharmthereceiver by pressing buttons,turning
knobsor exploring the menu options - experiment without
worry. Only by using the receiver will you become fully
conversantwithits operation.
If you really mess up the settings, a LOAD DEFAULT
facilityhasbeenincludedsothatyoucanreturnthesetto
its out-of-box condition (except for frequency memory
contents).Loading thedefaults willensure:-sensible filters
are selected for each mode of reception, no PBS offset,
no BFO offset for CW and DATA modes, maximum IF
gain with AGC on, auto synchronous AM, auto RF
attenuation,flat tone control settings, standard line output
levelsetc.
Toload the defaultsettings, press (to return to the
SETUPmenu),rotatethe spin-wheel oneclick anti-
clockwise so that the legend Deflt Set is displayed, and
then press the button. Loaded .. is briefly displayed
in place of the clock to confirm selection.
Should the filters appear incorrectly aligned or non-
symmetrical, please refer to FILTER CALIBRATION in
section 6-2 and look through section 6-1.
b. The receiver does not have a standard format of
display readout - it can be configured to display time or
pass band shift or filter selection or treble / bass tone
selection or VFO selection or AGC or memory
configuration... whatever YOU choose. The spin-wheel
and the button will retain their last assigned
functions when the button is pressed allowing a
selected function to be changed whilst the S-meter is
displayed.
To return to the SETUP menu and CLOCK display, press
.Todisplay the S-meter and return to the root level
of the menu system, press .
You may tune the receiver, change the volume and
reception mode or select fast tune whilst any menu is
shown on the display because these front panel controls
haveonlyonededicatedfunction.Thesearefixedcontrols,
and are indicated in this manual with white lettering on a
blackbackground,similartotheletteringonthefrontpanel.
Similarly the and buttons always have a
defined function. The other receiver controls, arranged
beneath the display, are referred to as SOFT-KEYS,
because their function varies according to the context of
theselected menus.Inthese cases thecontroldescription
isdisplayed on the receiver’sLCD andinthismanual with
black lettering on a grey background. When no menu is
displayedon the LCD - when the S-meter is shown -then
the underlying buttons select the menu indicated on the
panel:- MEMORY, RF / IF or FILTER.
c. Each mode can have, and will retain, a different filter
bandwidth(chosenfromthoseavailable),passbandshift
(PBS) setting, BFO setting and AGC speed. When
adjusting any of these settings the values are changed
onlyfor thecurrentmode selected. Squelchvaluefor NFM
modeis heldseparatelyfrom the valueforall othermodes.

AR7030 OPERATING MANUAL PAGE 3
d. It is possible to save and load up to three of your
favourite receiver set-ups, one for casual listening, one
forseriousDXing,onefordatacommunicationorwhatever
you choose. Each mode can have your own choice of
filter bandwidth, pass band offset, BFO setting and AGC
speed, along with global settings of the tone controls,
auto / manual synchronous AM, auto / manual RF
attenuatorand line output levels. All these settingscanbe
held in one of the SETUP MEMORIES, A, B or C. Using
thesetupscan avoidhavingtorecallmanydifferentmenus,
and provides a useful short cut to changing listening
modes.
The setup memories are accessed through the SETUP
menu by turning the spin-wheel until the required
memory (A, B or C) is selected along with the required
function:- to setup the receiver with the settings
held in the memory or to transfer the receiver’s
settingsinto the memory. Press the button to actually
load or save the setup.
e. The AR7030 has two VFOs, A and B - (Active and
Background). Each VFO holds settings of volume, tone,
receivefrequency,reception mode, filter bandwidth, PBS,
BFO, RF attenuator, IF gain, AGC speed, squelch, scan
delay time and scan mode. The contents of the VFOs
canbe exchangedusingthe button, only theactive
VFO can be tuned.
Note: The background VFO data will be lost when power
to the receiver is switched off.
f. The 100 frequency memories store receiver
frequency, reception mode, filter bandwidth, PBS offset
and squelch level. BFO frequency is stored instead of
squelchlevelfor in CW and DATA modes. Once recalled,
(into the active VFO) it is possible to tune away from the
memory data or change mode at will - for this reason
there is little point in storing the same frequency with
different modes in different memories, even when DXing
a broadcast where AM, USB, LSB or Snc modes might
be needed.
Memory contents are not modified by changing any
receiver settings - they will only alter if the button
is pressed. Any previous contents are then overwritten.
g. The receiver’s display is split into several different
areas. The current FREQUENCY and MODE are always
visible, but other information varies depending upon the
operating condition and the menus selected. This
illustration may be useful for reference.
1Auxiliaryinformation(volume,squelchetc)
/ keypad entry
2Receivefrequency
3Reception mode
4Attenuator (A) or preamplifier (P) indicator
5Signal strength meter (S-meter)
6Squelch open / close indicator
7Fasttuningindicator
8Dial lock indicator
9Spin-wheel function
10 button function
11, 12, 13 Menubuttonfunctions

PAGE 4 AR7030 OPERATING MANUAL
2-3 Quick reference guide
Key
Buttons shown white on black are labelled on the front panel, for example
Buttons shown black on grey are soft-keys labelled on the display, for example
The spin-wheel is labelled on the display and shown with up/down arrows, for example Gain
Soft keys shown with a bullet after the legend operate as toggles (on / off). The bullet shows the current state -
solid for on and hollow for off.
Power
To turn the receiver on, press To turn the receiver off, press or
Display
To display the S-meter, press To display the clock press
Filters
To change filter, press and use or Alternatively, cycle through filters with
To shift the filter passband, press and use PBS
To adjust audio frequency in CW and DATA modes, press and use BFO
To adjust audio tone, press and then use Treb or Bass as required
RF and IF Gain
To adjust RF gain, press and use or for adjustment in 10dB steps
To adjust IF gain, press and use Gain (for RF and IF controls together)
OR press and use Gain (for IF gain with filter bandwidth)
Squelch
To adjust squelch level, press and use Sql (for squelch with dual VFO)
OR press and use Sql (for squelch with memory scan)
OR press and use Sql (in NFM mode for general listening)
With squelch active will mute the receiver’s audio with no signal, and will stop scanning if a
signalispresent
Memories
To select and preview a memory, press and use Mxx
To recall from a memory (into the VFO), press , use Mxx to preview then press
To store into a memory (from the VFO), press , use Mxx to preview then press
Scanning
To set scan speed, press and use Dly (for dual VFO scanning)
OR press and use Dly (for memory scanning)
To scan the two VFOs, press
To scan memory channels, press
To set memory block for scanning, press then use From
or To
To exclude memories from scan, press , use Mxx to select then press
Clock and Timer
To set timer run time or sleep time, press and use Mins and
To set timer start time, press and then use Hrs or Mins as required
To set clock time, press and then use Hrs or Mins as required
To start sleep mode countdown, press
To arm timer for switch-on, press

AR7030 OPERATING MANUAL PAGE 5
2-4 Menu structure

PAGE 6 AR7030 OPERATING MANUAL
2-5 Infrared remote controller - quick reference
Key
Number key 0 through to 9
Backspace key (deletes last numeric keypress)
Clear key (deletes whole numeric entry)
All keys labelled +or -will auto-repeat if held pressed.
Tuning
To enter a frequency directly, press
OR press
Frequencies can have any number of digits, with or without a decimal point, up to a maximum of 9 characters.
Resolution of entries can be to 1Hz, with the receiver rounding to the nearest tuning step.
Frequencies of 50kHz or less are taken as tuning step size, not as receiver frequency.
To tune the receiver in steps, press or (step size set as described above).
To switch between active and background VFOs, press (VFO-A is copied to VFO-B if B is not already set).
Volume
To change the volume setting, press or
Mode
Mode key selects CW mode or NFM mode if CW is already selected.
Mode key selects LSB mode or USB mode if LSB is already selected.
Mode key selects AM mode or Sync mode if AM is already selected.
Filters
To change the selected filter, press then or
To move the filter passband, press then or To clear PBS offset, press
To alter the audio tone, press or then or
Memories
To select and preview a memory, press (one or two digits may be entered).
To preview the currently selected memory, press
To select next or previous memories, press or after or have been pressed.
To select and recall a memory (into the VFO), press (one or two digits may be entered).
To recall the currently selected memory (into the VFO), press
To recall the next (and subsequent) memories (into the VFO), press . . . . etc.
To select a memory and store (from the VFO), press (one or two digits may be entered).
To store into the currently selected memory (from the VFO), press

AR7030 OPERATING MANUAL PAGE 7
3 Major Features
The new AR7030 is the result of a combined project
betweenAORandinternationallyacclaimedUKdesigner
JohnThorpe.The AR7030 represents the very latest and
bestever “JT” design concentrating on exceptional strong
signal handling with enhanced microprocessor features
and facilities. It is manufactured by AOR
MANUFACTURING LTD based in Derbyshire, UK.
¬Excellent strong signal handling
InEurope, especially at night, strong signal handling is of
primeconcern andthis is wherethe AR7030standsahead
ofthe field -offeringan IP3 greater than+30dBm(typically
+35dBm, reduced by about 10dB with the preamp
switched on) and dynamic range greater than 100dB in
AM mode with a 5.5 kHz filter and greater than 105dB in
SSBmode with a2.2kHz filter. Thisfantasticstrong signal
handlingis made possible by the innovative configuration
of a lateral DMOS FET QUAD first mixer running at 15V,
relayswitchingin the front end (instead of the more usual
diodes) and the use of shielded inductors throughout the
signalpath.
¬High sensitivity and selectivity
All this and great sensitivity - better than 0.5uV for 10dB
S/N in AM mode and better than 0.3uV for 10dB S/N in
SSB(with thepreampswitched on).Selectivitytoo israzor
sharp offering greater than 95dB @ 10kHz SSB and
almost110dB @ 20kHz.No other receiver in itsclass,nor
indeedat a considerably higherpricecan match the sheer
performance excellence of the AR7030.
¬High Tech
The receiver is built around a TCXO frequency standard
which provides the reference for all its circuitry, ensuring
the ultimate in stability and optimum alignment. A single
loop DDS system provides the clean local oscillator
essential for low reciprocal mixing levels and seamless
tuning in approximately 2.7Hz steps (no tuning “plops” at
regular intervals). The receiver is a double conversion
superheterodyne withintermediatefrequencies of 45MHz
and 455kHz.
The IF filters are self-aligned by the receiver using
advanced microprocessor control, ensuring “spot on”
alignment and symmetry of passband characteristics
essential for serious ECSS listening. The main PCB will
acceptanumber ofdifferentfiltersincludingvariousMurata
typesand Collins mechanical units,allwill be self-aligned!
The displayed filter bandwidths are not fixed but actually
measuredby thereceiverpermitting variousdisplayssuch
as 2.2kHz, 2.3kHz, 2.4kHz, 2.5kHz etc depending upon
the particular filter fitted.
¬Computer control port
Virtually every aspect of the AR7030 is controllable via
the REMOTE port. The AR7030 may be connected
directly to a host computer such as a PC (via RS232 link)
with which, for example, frequency memories may be
loaded, frequency and mode changed and signal activity
logged - expanding the listening station even further.
¬All mode receive over a wide
frequency range
Allreception modes are availableasstandard: USB, LSB,
CW, AM, Synchronous AM, NFM, DATA. The receive
coverageis0- 32MHz, theAR7030hasnotbeen disabled
below 150 or 30 kHz, or made insensitive in the medium-
wave band. The standard fitted IF filters include: 2.2kHz,
5.5kHz, 7.0kHz and 10kHz with two additional positions
available for CW or other filter options.
¬Auto synchronous tuning
The receiver is capable of tuning itself automatically in
synchronous AM mode using a new variable bandwidth
synchronousdetector. Simply select synchronous mode,
tune the receiver to approximately the correct frequency
so that intelligible audio can be heard and wait... within a
few seconds the AR7030 will sample the frequency, tune
to the carrier (its great watching it tune itself!) and lock
solidlyonto the station. Should you prefer,youmayselect
fully manual operation of the synchronous detector.
¬Pass band tuning
(even on synchronous AM)
Enhanced features include pass band tuning of approx
±4.2kHz, variable audio pitch on CW and DATA modes
andanadvanced, self tracking, synchronous detector for
AM listening to eliminate the effects of transmitter or
receiver drift as well as reducing distortion from selective
fading.The passband tuning maybe usedinsynchronous
AM mode to select synchronous USB, LSB, DSB or
anythinginbetween.
¬Full AGC control plus IF gain
A specially developed AGC release characteristic
producesoutstandingSSB qualitywith quickrecovery from
strongsignalsandnoisespikes.Gentlesignalcompression
has also been included to reduce the audible effects of
noise pulses. An IF gain control is available along with
three AGC speeds and AGC defeat.
A built-in six level attenuator provides many levels of
sensitivity:-+10dB, 0dB, -10dB, -20dB, -30dB and -40dB,
howevergiven the excellent strong signal handling of the
AR7030 this is going to be a control rarely required! The
receivercan automatically switchinthe attenuator to keep
incomingsignals within itsAGCrange. Of course youmay
manuallyselect attenuation should you prefer.
¬Aerial input including whip amplifier
The rear panel of the AR7030 has inputs for a wire aerial
withgroundconnection,50OHMSO239 connection plus
selectionof ahighimpedance whipamplifierwhich isfitted
asstandard.
¬Audio output
Audio output is of high quality and clear tone when using
the built-in top mounted speaker. A 3.5mm external
speaker jack is provided on the rear panel which mutes

PAGE 8 AR7030 OPERATING MANUAL
the internal speaker, the amplifier provides more than 2
WATTS of audio-there are even treble andbasscontrols.
A stereo 3.5mm front panel socket provides headphone
output from a separate internal stereo amplifier and may
drive mono or stereo ‘phones. The auxiliary outputs (left
and right) have separately adjustable levels and may be
used to drive an external recorder or data decoders.
¬Dot matrix LCD
A 48 character, rear illuminated dot matrix LCD with rear
panel adjustable contrast provides a huge amount of
information, a wide range accurate signal meter and text
basedmenus.
¬Assignable controls
Assignablecontrolsenableyoutoplace thefunctions YOU
wantat your fingertips -theyretain the last used operation
whenthe menus are removed, and include apressbutton
and a spin-wheel .
¬Infrared remote controller
Afull featured32 buttoninfraredremote controlis provided
as standard and provides access to all commonly used
facilities, including: tuning, volume, tone, memory
functions, pass band shift and filter selection, as well as
providing a numeric keypad for direct frequency entry.
TWO infrared sensors are employed, one on the front
panel and one on the rear, so that the controller may be
used from almost any position around the receiver.
¬Stylish strong cabinet
The AR7030 features a custom CNC machined solid
aluminium front panel with extruded aluminium shaped
sides, metal top, bottom and rear panels. The front panel
finish is brushed and anodised with the sides and other
surfaces toned in a matching textured paint. Smooth
curved lines, detailed panel breaks, top mounted domed
speakergrille and ergonomically placed controls spell out
the attention to detail of this robust, solid cabinet.
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
excessiveheat, humidity, dustandvibration are expected.
Always treat the receiver with care.
Take care to avoid spillage or leakage of liquids into the
receiver and a.c. power supply. Special care should be
takento avoid liquid entering aroundthecontrols,through
the speaker grille or via the connection jacks.
Avoidstaticdischarge fromaerial systemsespecially when
usinglongwires - earth them to a central heating radiator
or similar earthing point in order to discharge the wire
beforeconnectiontothereceiver. Always disconnect and
earth any external aerial system if an electrical storm is
expected.
Avoidarapiddisconnectionthenreconnectionof thepower
supply.Ifdisconnected, leave at least two secondsbefore
reconnectingagain. Ensurethatall powerconnectionsare
secure.
AvoidstrongRFfields fromnearbytransmitters. Ifin doubt,
disconnecttheAR7030fromtheaerial and switch the set
off.
4-2 Looking after your receiver
Alwayskeep the receiver free from dust and water.Use a
soft, dry cloth to gently wipe the set clean. Never use
abrasivecleaners or organic solvents which may damage
certainparts.
4-3 Power requirements
The AR7030 is designed for operation from its supplied
mains adapter. Operation is possible from a d.c. supply
of12 to 15V,which should be able to supply up to 800mA,
but for full performance always power the receiver from
15V d.c rather than from 12V. (The receiver’s frequency
coverageisnotguaranteed above30 MHzwhenoperating
from a 12V supply).
EMC NOTICE - This receiver may not fully comply
with the E.C. EMC directive if operated from an
external power source other than the supplied AC
adapter.
The d.c. input socket uses a 2.1mm coaxial power
connector, and a 14mm long plug is recommended. This
connectorisconfiguredCENTREPOSITIVE,thechassis
ofthe receiver is at negative ground. The low noise power
supplyprovided ispre-wiredand provides aregulated15V
d.c.outputwith suitableconnectorsbeingfittedasstandard
for the a.c. mains input and connection to the AR7030.
TheAR7030has a rear panel socket for connection of an
RFearth,allowingaseparateearth to be taken to a water
pipe,central heating system radiatororexternal earth rod.
If fitting a separate external earth rod, consider the
implicationscarefullyif yourmainssupplyusesaProtective
MultipleEarth (PME) system. If in doubt consultanexpert
electrician. Never earth to a gas pipe!
SAFETY NOTICE - Always disconnect the power
supply from the a.c mains when not in use.
4-4 Aerial (antenna) connection
TheAR7030hastwoaerialinputs,selectedbyarearpanel
switch,allowing threebasic typesofconnection (theactual
choice of suitable aerial is almost limitless).
1. 50 OHM (unbalanced) SO239 socket for connection
ofdipoles,longwireswithmatching devices,active aerials,
verticals,yagis etc.
2. WHIP may be selected to activate an impedance
matching amplifier when a telescopic aerial or very short
wire is fitted to the 50 OHM SO239 socket.
3. WIRE aerial input is used for connection of long wire
or similar relatively high impedance aerial systems.

AR7030 OPERATING MANUAL PAGE 9
5 Controls and functions
Front panel
name for a tuning mechanism, in this operating manual it
is referred to as the MAIN DIAL.
The receiver tunes in a very smooth manner with
increments as small as 2.655 Hz. Excellent tuning
dynamicsincrease the rateoftuning depending upon how
fastthetuningcontrol isrotated andthemodeofreception.
Itispossibletoelectronicallylock the main dial to prevent
accidental tuning. A lock indication (reversed L) is
displayed on the LCD in this case.
5-4 Fast tuning button
FAST tuning increases the speed of tuning when using
themaindial.TheletterFisdisplayedafterthekHzofthe
frequencydisplay whenfast tuning isselected -the
buttonswitches thismode on andoff.If tuningin automatic
synchronous AM, the fast tuning mode is cancelled
automatically when the receiver samples frequency and
locksontothe transmission.
5-5 Mode selection buttons
The mode selection buttons are located in the top right
corner of the front panel. They select all of the available
modesin sequence: Dat (datareception),CW,LSB,USB,
AM,Snc(synchronousAM)andNFM,thesequencethen
repeating. The current mode is displayed to the right of
the frequency readout on the LCD.
5-1 On/Off power switch
This button, located in the upper left corner of the front
panel,switchesthesetonandoffand selects the SETUP
menuforgeneralconfigurationofthereceiverandsetting
of the clock and timer facilities.
Toswitch thereceiveron, connectasuitable powersource
andpressthepowerswitch forabout one second.
To switch the receiver off, press the power switch
TWICE,or usethe soft-keyfromtheSETUP menu.
Whenswitched off, whilst the receiver is still connected to
its adapter, the clock time display will continue with a dim
backlight.
5-2 Liquid Crystal Display (LCD)
Display of operating condition is provided by a high
contrast, green backlit, dot matrix LCD. Information
includes frequency, mode, bandwidth etc. Menu legends
forthecontrolsbeneaththedisplayarealsoprovidedalong
with an accurate 70 segment signal strength meter
(S-meter).
5-3 Main rotary tuning control
- MAIN DIAL
The large rotary tuning control is prominently located to
the right of the front panel. This control changes the
receivedfrequencyupanddown.Often referred to as the
VFO (Variable Frequency Oscillator), a rather historic

PAGE 10 AR7030 OPERATING MANUAL
5-6 Volume control
The volume is adjusted by the rotary encoder located in
the lower left of the front panel. The volume level is
displayedas a percentageonthe top left oftheLCD whilst
the control is turned. The range is 0% (minimum) to 96%
(maximum).
Note: It is normal for very low level audio to emanate
from the speaker even when the volume is at 0%,
especially in NFM mode.
5-7 Spin-wheel
This encoder is used to make selections from various
menusand to change the values of receiver settings such
aspassbandshift(PBS),IFgain,squelchetc.Thefunction
of the spin-wheel at any instant is displayed above it on
the LCD.
5-8 General button
This button is used to make selections from menus as a
soft-key. The assigned function is displayed above it on
the LCD.
5-9 Memory menu button
Initially used to choose the MEMORY menu for selection
of memory channel, scan parameters and audio mute. It
is also used as a soft-key to make selections from other
menus.
5-10 RF and IF settings button
Initially used to choose the RF gain / attenuator, IF gain
and VFO selection menu. It is also used as a soft-key to
make selections from other menus.
5-11 Filter menu button
Initially used to choose the filter bandwidth display
/ selection menu along with pass band shift (PBS) and
audio tone control. It is also used as a soft-key to make
selections from other menus.
5-12 Headphone socket
This 3.5mm socket will provide output to either stereo or
mono headphones, no switching is required. Connection
to this socket disables the internal speaker and any
speaker connected to the rear EXT LS socket.
Headphones should be of a nominally low impedance
around 8 to 200 OHMS.
5-13 Bail bar
The front of the receiver may be lifted up clear of the
table top to allow easy access to the front panel controls
and clear visibility of the LCD. Pull the bar forward to lift
thefront of the receiver upward, rubber cushions prevent
slipping on a table top.
5-14 Internal speaker
The AR7030 is fitted with a top mounted loudspeaker
which provides excellent audio reproduction under most
conditions.
Rear panel