AOR AR-ONE User manual

®
AR-ONE
Ultra Wide Band
Communications Receiver
Operating manual v.2.1
AOR, LTD.
March 1, 2010

1
Table of contents
1 Introduction ------------------------------------------------------------------------------------------------ 4
1-1 Intro uction ----------------------------------------------------------------------------------- 4
1-2 Taking care of your ra io ------------------------------------------------------------------- 5
1-3 Attention while operating ------------------------------------------------------------------ 6
1-4 Accessories supplie ----------------------------------------------------------------------- 8
1-5 Controls an functions --------------------------------------------------------------------- 8
1-5-1Keypa --------------------------------------------------------------------------- 10
1-5-2 Summary of keys ------------------------------------------------------------- 10
1-6 Computer control ---------------------------------------------------------------------------- 12
1-7 IF output an Spectrum Display Unit (SDU5600) ----------------------------------- 12
Getting Started -------------------------------------------------------------------------------------------- 13
2-1 Making the AR-ONE rea y for operation ---------------------------------------------- 13
2-1-1 LCD ------------------------------------------------------------------------------ 13
2-1-2 Connect the antenna -------------------------------------------------------- 13
2-1-3 Connect power ---------------------------------------------------------------- 13
2-2 Switching on for the first time ------------------------------------------------------------ 13
2-3 Squelch Circuit ------------------------------------------------------------------------------- 14
2-4 VFO selection -------------------------------------------------------------------------------- 15
2-4-1 Tuning frequency ------------------------------------------------------------- 15
2-4-1-1 Entering frequency using the numeric keypa --------- 15
2-4-1-2 Changing frequency using the main tuning ial -------- 16
2-4-1-3 Changing frequency using UP/DOWN arrow key ----- 16
2-5 Changing receive mo e ------------------------------------------------------------------- 16
2-5-1 Auto mo e selection --------------------------------------------------------- 17
2-5-2 Receive mo e selection ---------------------------------------------------- 18
2-6 Changing tuning step size ---------------------------------------------------------------- 18
2-7 IF ban wi th ---------------------------------------------------------------------------------- 19
2-7-1 Manually selecting IF ban wi th ----------------------------------------- 20
2-8 AGC (Automatic Gain Control) ----------------------------------------------------------- 20
2-9 ATT (Attenuator) ----------------------------------------------------------------------------- 21
2-10 RF Amplifier --------------------------------------------------------------------------------- 22
2-11 Offset ----------------------------------------------------------------------------------------- 23
2-11-1 Using pre-programme frequency offset ata ----------------------- 23
2-11-2 Entering new frequency offset ata ------------------------------------ 23

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3 Memory channels and banks ----------------------------------------------------------------------- 4
3-1 Memory channel overview -------------------------------------------------------------- 24
3-2 Storing VFO frequency an ata into memory ------------------------------------- 25
3-3 Memory rea “M.RD” --------------------------------------------------------------------- 26
3-4 Deleting memory channels -------------------------------------------------------------- 27
4 SCAN – scanning memory channels ------------------------------------------------------------- 8
4-1 SCAN – outline intro uction ------------------------------------------------------------ 28
4-2 Starting SCAN ------------------------------------------------------------------------------ 28
4-3 Selecting a SCAN bank ------------------------------------------------------------------ 29
4-4 Select SCAN -------------------------------------------------------------------------------- 29
4-4-1 A ing select scan channels in memory rea ----------------------- 29
4-4-2 Starting/Stopping select scan ------------------------------------------ 29
5 Search mode --------------------------------------------------------------------------------------------- 30
5-1 Search type --------------------------------------------------------------------------------- 30
5-1-1 Program search overview ------------------------------------------------ 30
5-2 Starting Program search ----------------------------------------------------------------- 31
5-2-1 Reversing the irection of search --------------------------------------- 31
5-2-2 Forcing the search to resume -------------------------------------------- 32
5-2-3 Stopping the search -------------------------------------------------------- 32
5-3 Selection of search bank ---------------------------------------------------- 32
5-4 Programming a search bank ----------------------------------------------------------- 32
5-5 Deleting search banks ------------------------------------------------------------------- 36
5-6 Locking out unwante active frequencies (PASS) -------------------------------- 37
5-6-1 Deleting pass channels --------------------------------------------------- 38
6 Configuration menu ----------------------------------------------------------------------------------- 39
6-1 Configure beep ---------------------------------------------------------------------------- 40
6-2 Configure lamp ---------------------------------------------------------------------------- 41
6-3 Configure immer ------------------------------------------------------------------------- 42
6-4 Configure contrast ------------------------------------------------------------------------ 42
6-5 Configure manual AGC ------------------------------------------------------------------ 42
6-6 Configure IF-GAIN (Interme iate Frequency gain) ------------------------------- 43
6-7 Configure RF-GAIN (Ra io Frequency gain) --------------------------------------- 44

3
6-8 Configure Remote BPS (Bau Rate) ------------------------------------------------- 44
6-9 Configure RMT-ID (Remote ID) -------------------------------------------------------- 45
6-10 Configure DELAY (Scan elay an Search elay) ------------------------------- 45
6-11 Configure FREE (Scan free an Search free) ------------------------------------- 46
6-12 Configure SPEAKER -------------------------------------------------------------------- 46
6-12-1 Configure rear speaker --------------------------------------------------- 47
6-12-2 Configure front speaker -------------------------------------------------- 47
6-12-3 Configure hea phones output ------------------------------------------ 47
6-13 Configure au io filters (HPF/LPF) ---------------------------------------------------- 48
6-13-1 Configure au io HPF (High Pass) ------------------------------------- 48
6-13-2 Configure au io LPF (Low Pass Filter) ------------------------------ 49
6-14 Configure Au io De-emphasis -------------------------------------------------------- 49
6-15 Configure PRIO-CH (Priority Channel) --------------------------------------------- 49
6-15-1 Engaging PRIO channel ------------------------------------------------- 50
6-16 Configure IF output frequency -------------------------------------------------------- 51
6-16-1 Selecting IF output frequency ------------------------------------------ 51
6-17 Configure reference signal source --------------------------------------------------- 51
7 Computer control --------------------------------------------------------------------------------------- 5
7-1 How to sen an RS-232C comman ------------------------------------------------- 52
7-2 Power on the AR-ONE ------------------------------------------------------------------- 52
7-3 Detaile RS-232C Comman Listing of the AR-ONE ---------------------------- 53
8 Reset -------------------------------------------------------------------------------------------------------- 66
9 Specifications -------------------------------------------------------------------------------------------- 67
10 Optional Accessories -------------------------------------------------------------------------------- 70
11 Limited Warranty (USA only) ---------------------------------------------------------------------- 71

4
1 Introduction
1-1 Introduction
Thank you for purchasing the AR-ONE Ultra Wi e Ban Communications receiver.
The AR-ONE is esigne using the very latest technology to ensure the highest levels of
performance an reliability. To get the best possible results from your AR-ONE, we
strongly recommen you to rea this manual an familiarize yourself with the receiver.
Although carefully esigne , this receiver (like all receivers) suffer from a egree of
internal noise known as spurious emissions. They are a pro uct of the receiver’s
circuitry, an therefore, o not represent a fault. Apparent faults may be ue to
acci ental misoperation of the receiver. If you believe there is a problem, carefully rea
all of the manual before eci ing to contact your ealer for a vice.
It is acknowle ge that sections of this manual are repetitive, this is to enable the
manual to be use as a reference book (you on’t have to rea it all from cover to cover
in one go).
Every effort has been ma e to make this manual correct an up to ate. Due to
continuous evelopment of the receiver, an by error or omission anomalies may be
foun an this is acknowle ge .
© This manual is protecte by copyright AOR, LTD. 2009. No information containe in
this manual may be copie or transferre by any means without the prior written consent
of AOR, LTD. AOR an the AOR logo are tra emarks of AOR, LTD. All other tra emarks
an names are acknowle ge .

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Main features:
 Super wi e coverage: 10 KHz ~ 3.3 GHz (continuous)
 1,000 memory channels
 10 VFOs
 Monitor AM, NFM, WFM, USB, LSB, CW, Data
 Ultra-stable reference frequency oscillator
 Two RS-232C ports plus control hea port
 Control up to 99 AR-ONE Units with one PC
 Triple conversion superhetero yne front en
 Antenna input level rea out
 A justable BFO
 High intercept
 IF signal output (10.7 MHz or 455KHz)
 Excellent sensitivity
 Detachable control hea (optional kit require )
1- Taking care of your radio
There are no internal operator a justments. In the unlikely event of servicing being
require , please contact your ealer for technical assistance.
Do not use or leave the receiver in irect sunlight (especially the LCD). It is best to avoi
locations where excessive heat, humi ity, ust an vibration are expecte . Always keep
the AR-ONE free from ust an moisture. Use a soft, ry cloth to gently wipe the set
clean, never use abrasive cleaners or organic solvents which may amage certain
parts. Treat the AR-ONE with care, avoi spillage or leakage of liqui s into the receiver
an associate power supply. Special care shoul be taken to avoi liqui entering
aroun the controls, through the speaker grille or via the connection jacks.
The AR-ONE is esigne for operation from a goo quality regulate DC supply of 12 to
14 V, which shoul be capable of supplying 1.5 A. Never connect the AR-ONE
irectly to the AC outlet.
The chassis of the receiver is at negative groun . Where provi e ( epen ing upon
worl market location), the power supply is pre-wire an provi es a nominal 12 V DC
output with suitable connectors being fitte as stan ar for the AC power input an
connection to the AR-ONE.

6
SAFETY NOTICE – Always disconnect the power supply from the AC outlet when
not in use. If used mobile, it should be noted that the AR-ONE has NOT been
manufactured or tested to meet any specific mobile safety requirements.
The AR-ONE has no internally user adjustable parts.
If using the AR-ONE in a base station situation, the best short wave reception is usually
achieve by the fitting of a separate external earth ro , however, consi er the
implications carefully if your AC buil ing supply uses a Protective Multiple Earth (PME)
system. If in oubt consult an expert electrician. Never earth to a gas pipe!
The AR-ONE has a single N type antenna connector for all frequencies. This is inten e
for connection to a 50 Ω (unbalance ) coaxial fe antenna such as a iscone, ipole,
unipole, Yagi, etc. When sighting the antenna, avoi power cables. Ensure that you o
not confuse the antenna an other IF output connectors as they are closely locate .
1-3 Attention while operating
1. Certain key operations are acte upon when the key is RELEASED, not while it
is presse . Allow time for the AR-ONE to register such actions before pressing
another key.
2. The key lock (LOCK) is intentionally ma e to be ifficult to operate to prevent
acci ental operation. To release key lock, the LOCK key has to be hel for
more than one secon , the key icon on the LCD confirms operation. The LOCK
is isable uring keying sequences (such as when entering frequencies).
3. If a key sequence is not complete , the microprocessor will automatically abort
most operations after about 90 secon s of keypa inactivity.
4. Currently isplaye VFO ata is save at power own (to increase spee of
operation an to re uce write cycles). For this reason, if the AR-ONE is
powere own using the PWR/VOL control or external power is remove , the
last isplaye frequency will be lost an the frequency use prior to this will be
isplaye when next powere up.
Terminology – Search & Scan
If you have not use a wi e ban receiver before or are not familiar with the terminology
use , it is very important to un erstan the ifference between SEARCH an SCAN mo es.
SEARCH: The AR-ONE provi es several operations where transmissions (active
frequencies) may be automatically locate by sweeping the receiver over a wi e

7
frequency range, either from the currently isplaye frequency traveling upwar s
(or ownwar s) in a specifie tuning increment (step) or by sweeping
over-an -over between two specifie frequency limits. This process is known as
SEARCHING, as the title implies, it can take a long time to fin transmissions ue
to their ‘often intermittent’ an brief nature. For this reason it is best to slice large
frequency ranges into smaller, more manageable pieces where they may be
intensively stu ie .
When examining large frequency ban s, it is common to fin that 90% of
frequencies are inactive an only a small number of the remaining constitute what
you really want. Searching still remains the best way to initially locate active an
interesting transmissions (in conjunction with a goo frequency listing an ban
plan).
SCAN: Once active transmission have been i entifie (either by searching or by
using a goo frequency gui e), it is more efficient to store the ata into memories
which can be rapi ly an automatically monitore in succession, stopping when
activity is encountere . This forms a much more efficient means of monitoring the
most wante frequencies as you have targete 100% what you most want to hear,
by contrast searching is very inefficient for ay-to- ay monitoring.
Note: It is very important that the squelch is advanced to cancel background
noise for the search & scan functions to operate. This is because the
AR- NE believes that it has found an active frequency when the squelch
opens and “S” ‘squelch open’ icon is displayed to the left of the signal meter.
Advance the squelch control clockwise until the background noise is just
cancelled, this is known as the threshold position. If the squelch control is
advanced too far, weaker signals may be missed.
No noise an no “S” icon isplaye (with squelch a vance clockwise
passe threshol ) = squelch closed.
Signal receive or ‘noise’ emanating from speaker (squelch fully
counterclockwise, below threshol ) with “S” icon isplaye = squelch open.

8
1-4 Accessories supplied
The following items are provi e in the carton box:
1 AR-ONE receiver
1 DC power cable
1 Operating manual
1-5 Controls & functions
Controls are locate on the front with most connectors on the rear of the AR-ONE, a brief
i entification is given here:
Front Panel
1. Volume control plus isolate power On/Off
2. Squelch control
3. Phones jack (3.5 mm mono or stereo may be use )
4. Escape key
5. Key Lock key
6. Monitor key
7. Function keys
8. LCD (Liqui Crystal Display)
9. Main keyboar (ten keys plus ecimal an enter)
10. Main tuning ial (frequency change an menu manipulation)
11. Arrow keys (frequency change an menu manipulation)

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Rear Panel
12. Antenna connector (N type)
13. Stan ar signal (10 MHz) input connector
14. IF output connector
15. Main power switch
16. DC power input connector ( esign may vary epen ing on AR-ONE
generation)
17. Remote control connector (RS-232C) -- 1
18. Remote control connector (RS-232C) – 2
19. External au io output connector (when use , the internal speaker is isable )
20. Au io output connector (speaker output without isabling the internal speaker)
21. Signal output connector (0 – 4.5 V DC maximum)
RS- 3 C connection requirements:
The REMOTE RS-232C connectors (17 & 18 above) are esigne for connection irectly to
a RS-232C serial port of a PC. By aisy chaining the units, control of up to 99 AR-ONE
receivers is possible from one PC. No interface is require , just a stan ar RS-232C straight
cable. Connections for a PC are as follows:
AR-ONE DB-9 RS-232C cable DB-25 RS-232C cable
Pin # 2 Pin # 2 Pin # 3
Pin # 3 Pin # 3 Pin # 2
Pin # 5 Pin # 5 (Groun ) Pin # 7 (Groun )
Pin # 7 Pin # 7 Pin # 4
Pin # 8 Pin # 8 Pin # 5

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1-5-1 Keypad
Keypad conventions
Most keys have secon ary functions, these are printe on the panel. However, ue to
the restrictions of available space, not all functions can be shown.
Secon ary functions of the AR-ONE are in icate with white characters above
each key. To access the secon ary function, push the FUNC key, an then push the
respective key.
1-5- Summary of keys
ESC
Cancels entry from the keypa .
LOCK
This key is intentionally small to re uce the chances of acci ental operation. Key lock is
useful when you o not wish an important frequency to be lost or the AR-ONE to be
incorrectly set to a ifferent frequency.
MON
To force the squelch open so that you may manually intervene to ensure that no weak
signals are misse .
FUNC
Selects the secon ary functions of keypa .
SCAN
Initiates SCAN.
MEMO
Push the [FUNC] key, an then push this key to go into memory rea mo e.
SRCH (SEARCH)
Initiates SEARCH.
VFO
VFO mo e selection. There are 10 VFOs (VFO-A through VFO-J).
STEP
Push the [FUNC] key, an then push this key to enable frequency step selection.
MODE
Receive mo e selection.
WIDTH
Push the [FUNC] key, an then push this key to select the IF ban wi th menu.

11
ATT
RF Attenuator. Move the cursor to select the esire parameter. The AUTO selection will
work best for most of cases.
AGC
Automatic Gain Control. Move the cursor to select the esire AGC time constant. Usually,
FAST is use to receive CW, MEDIUM for AM an FM, an SLOW for SSB. When MANU is
selecte , any esire parameter (between 0 – 255) can be selecte for manual gain control.
dBm
Toggles the incoming signal strength unit between dBm, dBuV, or or inary S units.
0 ~ 9 , .
Numeric keys.
S. SET
Push the [FUNC] key, an then push this key to select the esire memory channels to scan
in the SELECT SCAN mo e.
S.SCAN
Push the [FUNC] key, an then push this key to initiate SELECT SCAN.
DEL
Push the [FUNC] key, an then push this key to elete memory channels, a search bank or
pass frequency.
PRIO
Push the [FUNC] key, an then push this key to initiate PRIORITY CHANNEL RECEIVE.
RF AMP
Push the [FUNC] key, an then push this key to activate/ eactivate the RF amplifier
(ON/OFF/AUTO).
S PROG
Push the [FUNC] key, an then push this key to set the search bank.
CONF
Push the [FUNC] key, an then push this key to access CONFIGURATION menu to alter
beep level setting, backlight function, etc.
SQL
Push the [FUNC] key, an then push this key to select either the noise squelch mo e or
level squelch mo e.
PASS
Push the [FUNC] key, an then push this key to set pass frequencies in search mo e.

12
OFFSET
Push the [FUNC] key, an then push this key to activate/ eactivate the frequency offset in
uplex mo e.
AFC
Push the [FUNC] key, an then push this key to activate/ eactivate the AFC (Automatic
Frequency Control) function.
ENT
To vali ate ata entry.
M. in
In the manual receive mo e or search mo e, push the [FUNC] key, an then push this key
to enter the frequency into memory.
1-6 Computer control
Connect the AR-ONE to the serial port of a computer using an RS-232C serial cable
terminate in a 9-pin male connector. The RS-232C parameters may be efine using the
CONFIG menu. Bau rates (transfer spee ) can be set to 9600, 19200 ( efault) or 38400
bps. Since there are two in epen ent RS-232C ports with the AR-ONE, it is possible to set
an ‘a ress’ to facilitate connection of up to 99 AR-ONE receivers to a single PC.
The RS-232C parameters are as follows:
Bau Rate: 9600, 19200 ( efault) or 38400 bps
De-limiter: CR, LF
Data bit: 8 bit
Stop bit: 2 bit
Parity: None
X flow: None
Please refer to chapter 7 for further etails.
1-7 IF output and Spectrum Display Unit (SDU5600 )
The rear panel has a 10.7 MHz IF output esigne to rive the optional SDU5600 Spectrum
Display Unit. The SDU5600 provi es an excellent tool for locating elusive transmissions with
a PEAK capability to ‘freeze’ the briefest of transmissions for later measurement of
frequency an level after the event.
(Note: The IF output frequency is selectable in the CONFIG menu, 10.7 MHz or 455 kHz).

13
Getting started
-1 Making the AR-ONE ready for operation
-1-1 LCD (Liquid Crystal Display)
All relevant operational information is provi e via the LCD. The LCD contrast is a justable.
-1- Connect the antenna
For reception on all ban s, connect the antenna to the N connector on the rear panel of
the AR-ONE. Refer to chapter 10 for an overview of the available AOR antennas epen ing
on your target frequency range.
-1-3 Connect power
Connect power to the DC power jack on the rear panel of the AR-ONE. For optimal
performance use a regulate DC power supply (12 ~ 14 V with capacity 2A).
Do not connect to a 24 V system.
(DC power socket esign may vary epen ing on AR-ONE generation)
- Switching on for the first time
Set the squelch control to the ‘mi point’. Turn the power switch on the rear panel of the
AR-ONE. This is a main power switch. The green LED on the switch will illuminate. Then
rotate the PWR/VOL control to the ‘mi point’, as you start to rotate the PWR/VOL control, a
‘click’ will be hear as the power isolation switch contact switches on. Please be careful NOT
to switch on any receiver with an earphone connecte , there may be an au ible click when
the unit is switche on or the volume may be acci entally set too high.

14
The AR-ONE will take approximately 4 - 5 secon s before information appears on the
LCD. This is normal, while the AR-ONE microprocessor generates the ‘boot up ata’
require to control the receiver.
-3 Squelch Circuit
In normal use, NOISE SQUELCH is use . However, LEVEL SQUELCH can be selecte for
search an scan operations. The LEVEL SQUELCH parameter causes the AR-ONE to
check the signal strength of active frequencies an to only stop when the signal strength is
above a preset level (which is programmable).
To select LEVEL SQUELCH, perform the following steps:
1. Push the FUNC key.
2. Push the “8” key.

15
3. On the bottom of the LCD, a bar will be isplaye . Using the SQL control,
a just the esire signal level.
4. Push the ENT key to confirm entry.
5. Squelch will open only when the input signal strength is above this set level.
6. To select NOISE SQUELCH, repeat above steps.
-4 VFO selection
The AR-ONE has ten (10) VFOs being i entifie as “V-A” through “V-J” on the top left of the
LCD. The term VFO historically means ‘Variable Frequency scillator’ an to ay refers to
a tunable ata store which contains frequency, step, step-a just, attenuator etc. Pushing
the VFO key each time will select the one VFO out of 10. The AR-ONE has an AUTOMODE
setting, an therefore, in most cases a proper receive mo e an frequency step are
automatically selecte .
-4-1 Tuning frequency
-4-1-1 Entering a frequency using the numeric keypad
While in VFO mo e, enter the require frequency using MHz format followe by the ENT
key.
Example of frequency entry of 80.8 MHz:
Push the [8] key. Push the [0] key. Push the [.] key. Push the [8] key. Push the
[ENT] key.
Example of frequency entry of 954 kHz (0.954 MHz)
Push the [.] key. Push the [9] key. Push the [5] key. Push the [4] key. Push the
[ENT] key.
Aborting frequency input
If for some reason you o not wish to complete the frequency ata input, push the ESC key
before completing the input sequence with the ENT key.

16
-4-1- Changing frequency using the main tuning dial
While in VFO mo e, the active VFO frequency may be ‘tune ’ using the rotary main tuning
ial which is mounte on the right si e of the front panel. You may rotate the ial ‘clockwise’
to increase frequency or turn ‘counterclockwise’ to ecrease frequency.
-4-1-3 Changing frequency using UP arrow key or DOWN arrow key
The UP arrow key an DOWN arrow key provi e a convenient metho of frequency change.
The spee at which the receiver steps up or own epen s upon the STEP SIZE which is
efault to AUTO. In AUTO the step size, receiver mo e etc. is taken from the factory
pre-programme ban plan but may be overri en at any time.
Push the UP arrow key to tune the receiver upwar in whichever step size is selecte , use
the DOWN arrow key to tune the receiver ownwar in frequency.
-5 Changing receive mode
Due to the necessities of signal ban wi th, channel occupancy an transmission efficiency,
ifferent receive mo es are use by various services. Specifications being not consistent
throughout the worl , it is sometimes necessary to change receive mo e in or er to monitor
various transmissions.
For your convenience, receive mo e an tuning step size have been pre-programme into
the AR-ONE auto-mo e ban plan ata at the factory to simplify operation of the receiver,
especially while you familiarize yourself with all functions. Shoul you wish, the efaults may
be manually overri en at anytime so that you may select an alternative receive mo e an
tuning step on any frequency.
AM
Amplitu e Mo ulation – Use by broa cast services throughout the worl on long wave,
me ium wave an shortwave. AM is also use by VHF airban , UHF military airban an
some PMR (Private Mobile Ra io) an utility services.
FM
There are two common types of FM (Frequency Mo ulation), these are:
NFM – Narrow Ban Frequency Mo ulation – this provi es high quality communication for
relatively short istance operation. FM uses a greater frequency ban wi th than other
mo es such as SSB, so is less efficient.
NFM is the most common mo e use above 30 MHz with the exception of the airban s.
NFM is wi ely use on the VHF ban s: VHF marine ban , 2m amateur ban , 70 cm
amateur ban , PMR (Private Mobile Ra io) an utilities.

17
In the absence of signal, the backgroun white noise may appear quite lou . For ease of
listening, the squelch control shoul be rotate clockwise until he backgroun noise just
isappears, this shoul be carrie out while no signal is present. The point where the
backgroun noise is cancelle is known as threshol point. Do not a vance the squelch
control more than necessary or the receiver will appear to be esensitize an weaker
signals will be misse .
WFM – Wi e Ban Frequency Mo ulation – use by VHF an UHF broa cast stations as
excellent au io quality is available ue to the relatively wi e frequency ban wi th employe .
Use only for local services such as VHF ban stereo (receive as mono on the AR-ONE)
an UHF TV soun channels.
LSB – Lower Si e Ban – is form of SSB (Single Si e Ban ). LSB ten s not to be use
commercially but is extensively use by Ra io Amateurs on frequencies below 10 MHz.
This assists the separation of Commercial an Amateur users on tra itionally share ban s
an prevents them from speaking to each other.
SSB is a very efficient metho of transmission as the unwante secon si eban an carrier
have been remove . This allows the full transmitter power to be employe in carrying
useful information within the wante si eban . As a result, greater istances are possible on
SSB an a smaller frequency ban wi th is require than most other mo es.
USB – Upper Si e Ban – The same comments apply as for LSB. By convention, Ra io
Amateurs also use USB above 10 MHz.
CW - Continuous Wave – Often referre as Carrier Wave or Morse Co e. Commonly use
on the shortwave ban s by ra io amateurs towar the lower en of each ban allocation.
Some commercial use is still ma e by shipping etc although its use is being phase out ue
to the intro uction of automate stations.
-5-1 Auto-mode selection
When auto-mo e is in operation, receive mo e an tuning step size are automatically
selecte for you.
To activate auto-mo e or reconfirm its selection while in VFO mo e,
Push an hol the MODE key for more than 2 secon s.
The AUT icon appears on the top right portion of the LCD.

18
Note: Auto-mo e is cancelle as soon as the receive mo e, tuning step or other relate ata
is change . Remember that auto-STEP an auto-MODE are linke , reselect AUTO-MODE
if either have been a juste an you require the auto ban plan selection.
-5- Receive mode selection
Any receive mo e may be selecte at any frequency within the receiver’s frequency
coverage. To access the receive mo e menu, push MODE. The following mo es are
available: AUTO, WFM, NFM, USB, LSB, CW. Use the main tuning ial or arrow key to
make the selection. To accept the selection, push the ENT key.
-6 Changing tuning STEP size
Each country’s government eci es upon the specification for channel occupancy, step
(separation) an mo e.
Not surprisingly the allocation of frequency ban s are not the same all over the worl an
channel separation (step) varies from ban to ban . As an example, the channel separation
(step) for the MW (me ium wave) ban in the U.S.A. is 10 kHz while in Europe an Japan
it is 9 kHz.
For the above reasons it is necessary to sometimes alter the STEP size accor ing to local
ban plan conventions. The pre-programming of step size may be manually over-ri en so
you may choose alternative settings at will.
Shoul you wish to change the efault tuning step size, push the FUNC key an then push
the VFO key.
The thir row of the LCD will isplay the current efault size.

19
The bottom line of the LCD isplays the icon “STEP SET” to in icate that the AR-ONE is
Waiting for you to change the step size.
Use the main tuning ial or arrow key to select the esire step size. To accept the isplaye
tuning step size, push the ENT key.
The tuning step size can be programme in 1 Hz increments (via the keypa ) so unusual
step sizes are possible.
The acceptable step size range is less than 1 MHz in 1 Hz steps.
-7 IF Bandwidth
The IF ban wi th etermines how SELECTIVE the receiver will be when monitoring signals
off air. However, it is not simply a case of using the narrowest filter at all times, particular
mo es require iffering amounts of ban wi th in or er to operate, otherwise the receive
system simply will not pro uce intelligible soun . Correct receive mo e an IF ban wi th
must always be selecte for optimum reception. If the ban wi th selection is too narrow,
istortion or signal break-up may occur. If the ban wi th selection is too wi e, a jacent
interference may be encountere . For this reason, a selection of IF filter ban wi ths are
fitte as stan ar .
Typical examples of receive mo e an IF ban wi th are:
300 KHz -- VHF FM broa cast (220 KHz may be also be use – mono only).
00 KHz -- VHF FM broa cast (110 KHz may be also be use – mono only).
100 KHz or 30 KHz – Wireless mic, etc. (30 KHz for satellite FAX, too).
16 KHz – PMR, amateur ban , etc. FM 6 KHz may also be use .
8.5 KHz or 6 KHz – VHF/UHF airban , shortwave, me ium & long wave, PMR, etc.
3 KHz – Short wave amateur ban , short wave utility such as oceanic airban etc.
0.5 KHz – Morse co e use by ra io amateurs an some marine traffic on shortwave.