AOR ARD9800 User Guide
FAST RADIO MODEM
ARD9800
ARD9800
ARD9800ARD9800
Instruction Manual
Multi-Mode And Digital Voice Interface
AOR, LTD.
Authority On Radio communications
Thank you for purchasing the AOR ARD9800 M ultimode and Digital Voice Interface.
The ARD9800 is designed to convert your HF radio equipment to a multi mode and digital voice
capable radio without performing any modifications to your transceiver .
Please read through this instruction manual and familiarize yourself with the operation of the
We suggest you keep this instruction manual for future reference.
We believe you will enjoy using the ARD9800 as an enhancement to your enjoyment of amateur radio.
ARD9800
AOR, L TD.
.
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Features:
Digital voice communications using existing analog 2 way radios.
The ARD9800 uses the same audio frequencies (300 Hz ~ 2500 Hz) as microphone audio to
modulate the voice signal. This allows you to use an analog radio as a digital voice transceiv er.
Digital voice communications in the Single Side Band (SSB) mode.
The automatic frequency clarifier function adjusts frequency drift automatically in the SSB mode.
(Approximately up to +/- 125 Hz). Utilizes the OD FM (Multi Carrier Modulation) circuit that is ef fective
against Multi-path or Selective Fading.
Automatic digital receive
Automatic voice signal detector recognizes the received signal as analog or digital, automatically
switching to the appropriate mode.
Digital Slow Scan TV (SSTV) -- Optional memory module (VM 9800) required
Built-in video capture function (NTSC). Compresses the signal into our original adaptive JPEG format.
Send and receive images (similar to analog slow scan TV) in the Digital mode. Built-in video output
connector (NTSC) allows view ing the picture on an external monitor.
Built–in high grade Vocoder (AM BE)
Utilizing high grade digital voice compression; delivers quality digital voice communications.
Built-in FEC error correction
A powerful error correction circuit delivers stable and reliable communications.
Data communications on the HF band
Data communication is possible on the HF (High frequency) bands at no extra cost. (Speed may be
limited by regulations in certain jurisdictions.)
Small and compact unit. Easy to operate.
Simply connect the ARD9800 to the microphone jack. No complicated or risky radio modifications are
necessary .
Utilizes a uniquely designed high performance DSP (Digital Signal Processor) engine
Battery operation for field use.
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Information to the Digital Device user required by the FCC
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation.
This equipment generates, uses and can generate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that the interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the use r
is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver .
Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer for technical assistance.
Precautions
T o prevent fire, personal injury , or unit damage, please observe the following precautions:
Do not attempt to adjust this unit unless instructed to do so by this manual.
Do not expose the unit to direct sunlight or place the unit close to heating appliances.
Do not place the unit in excessively dusty , humid, wet areas.
We are not responsible for any damages to the radio equipment due to improper settings or interface.
We are not responsible for any loss of communications due to an unexpected change of propagation or
operating environment.
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T able of Contents
Supplied Accessories ----------------------------------------------------------- 5
Controls and functions --------------------------------------------------------- 5
Front Panel ------------------------------------------------------------------- 5
Rear Panel -------------------------------------------------------------------- 8
T op Panel ----------------------------------------------------------------------- 12
Internal View ------------------------------------------------------------------ 12
Bottom View ------------------------------------------------------------------ 14
Interfacing the ARD9800 ------------------------------------------------------ 15
Connection to a Radio ----------------------------------------------------- 15
Connection to a Microphone -------------------------------------------- 16
Connection to a PC -------------------------------------------------------- 16
Connection to a Power supply ----------------------------------------- 17
Connection to an External speaker ---------------------------------- 17
Level Adjustment ---------------------------------------------------------------- 17
Microphone level ------------------------------------------------------------ 17
Radio Input level ------------------------------------------------------------- 18
Microphone Balance ------------------------------------------------------- 18
Operation ----------------------------------------------------------------------------- 19
Voice Communication ----------------------------------------------------- 19
Digital Voice Communication ----------------------------------- 19
Analog Voice Communication --------------------------------- 19
Data Communication ------------------------------------------------------ 19
Receive ------------------------------------------------------------------ 19
Transmit ------------------------------------------------------------------ 20
Digital Image Communication ------------------------------------------ 21
Receive ------------------------------------------------------------------ 21
Transmit ----------------------------------------------------------------- 21
Specifications ------------------------------------------------------------------------ 22
Control Commands -------------------------------------------------------------- 23
Limited Warranty ------------------------------------------------------------------ 31
Page
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Supplied Accessories
The following items are provided in the box:
Accessory Quantity
----------------------------------------------------------------
Microphone 1
PC interface cable 1
Speaker Cable 1
DC Power cable 1
Microphone Connector 1
Instruction manual (this booklet) 1
Controls and functions
Front Panel
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a. Power on/off switch
b. TX switch
(Note: This function is available only when an optional memory module has been installed.)
Press this switch to capture and send an image.
When the Video Through Function is activated (AVT command is ON), pressing this
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switch will enable output of the video signal connected to the Video Input to also be sent
to the video output port, so that you can monitor the video image. Press this switch again
to capture and send the image through the radio equipment.
When the Video Through Function is de-activated (AVT command is OFF), pressing
this switch will automatically capture the video image and then transmit it through the
radio equipment.
Refer to : Operation -- Digital Image Communication at page 21 for details.
c. 2 color LED
Steady red display ---- The unit is in the transmit mode
Flashing red -- Flashes red while the header information is being sent when in the digital
communication mode. (approximately one second).
Lit in green -- The unit is in the receive mode
Not lit --------- The unit is in the standby receive mode or in the analog voice receive mode.
d. Status LED (ST A LED)
In the data communication mode, lit while unsent data is in the memory . It is lit when the
Video Through Function is activated (Digital Image Communication mode). When the
Video Through Function is de-activated (A VT command is OFF), this LED w ill not be lit.
e. Speaker volume adjustment
Adjustment for the internal speaker output level or the external speaker output level when it
is connected.
f. Operation Mode LED (3 colors)
Indicates the current operation mode:
Green display ----- Digital V oice mode
Red display ------- Analog Voice mode
Orange display -- Data Communication mode
Not lit ---------------- Digital Image Communication mode
g. Microphone Input Level Adjustment
Adjustment for microphone input level
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(This adjustment may be required when using a microphone other than the one that came
with your AR9800.)
Refer to Microphone Level Adjustment at page 17 for details.
In case of unbalanced levels between analog voice and digital voice, perform a
microphone balance adjustment as described below.
Microphone Balance
1. At first, set the proper microphone level in the digital voice mode.
2. Turn off the pow er to the ARD9800. Press and hold the TX switch then turn the
power back on. The Mode LED should flash in orange color indicating the
ARD9800 is in the microphone balance adjustment mode.
3. Holding the PTT switch, and w hile speaking into the microphone, adjust the
microphone level.
4. After the adjustment is completed, push the TX switch to save the new setting. The
ST ALED will light to indicate the setting process is completed.
5. T o complete the operation, turn the power of the ARD9800 off, and turn back it on.
h. Overload indicator
Lit when the microphone input is overloaded (too high).
A proper microphone input level will cause the LED to flash from time to time when
speaking into the microphone at a normal level.
The microphone level can be adjusted with the microphone level controller .
Refer to Microphone Level Adjustment at page 17 for details.
i. Mode switch
Select the Digital voice mode (10101) or the Analog voice mode (~)
When the Analog voice mode (~) is selected, ordinary analog voice communications will
be made. In the receive mode, however , the ARD9800 will automatically detect the mode
of the incoming signal and decode signals accordingly . The LED indicates the respective
operation mode.
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j. Microphone connector
Connect the supplied microphone to this connector.
Below are the pin assignments of the connector .
1. Speaker output -- Monitor output signal is present at this pin.
2. BIAS -- Power source for an electret condenser type of microphone.
5V DC through 2.2Kohm of resistor
3. GND -- Chassis ground
4. TX
T aking this pin to the ground will enable the transmit mode.
(Same operation as the TX switch on the front panel.)
5. D/A
T aking this pin to the ground will force the unit to the digital voice communication
mode. When this pin is left open, the operation mode will be set by the mode
switch on the front panel.
6. MIC PTT -- PTT (Push T o T alk) input.
7. MIC GND -- Microphone ground signal
8. MIC IN -- Microphone signal input
Rear Panel
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k. Communication Connector (mini DIN 8 pin)
A communication connector for PC (RS-232C)
Pin Number Signal Signal Direction
1 TX ARD9800 PC
2 DTR ARD9800 PC
3 DSR ARD9800 PC
4 GND GND
5 RX ARD9800 PC
6 RTS ARD9800 PC
7 CTS ARD9800 PC
8 NC No Connection
Shell FG Frame ground
Baud Rate: 9600
Start bit: 1
Stop bit : 1
Parity: None
Synchronization: Asynchronous
Flow control: Hardware
l. VIDEO - IN connector (NTSC 1V p – p, 75 ohm)
Connect a video signal source such as a video camera, VCR output, etc.
m. VIDEO – OUT connector (NTSC 1V p – p, 75 ohm)
Connect a video monitor to this connector to monitor a received image or a picture to be sent.
n. RADIO Connector
Using the supplied 8 pin connector, connect the ARD9800 to y our radio equipment. Y ou will
need to wire a cable according to the microphone connector specifications of your radio.
Below are the pin assignments of the connector on the ARD9800.
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Pin number Signal Details
1 MIC GND Microphone ground
2 MIC IN Microphone Input
3 PTT PTT (Push To T alk) input
4 GND PTT ground
5 NC No connection
6 NC No connection
7 GND Ground
8 NC No connection
Note: MIC GND and GND must not
RF feedback will result.
o. SP IN Connector (3.5 mm mono jack)
Connect to the radio equipment’s speaker jack. (Input level: 0.5 V – 5 V p-p)
Note: The output signal from a radio’s “accessory” connector may not be sufficient to use for
this purpose. Use the transceiver’s “speaker out” jack.
p. SP OUT Connector (3.5 mm mono jack)
Connect an external speaker to this jack to disable internal speaker .
q. DC IN Connector (EIAJ T ype 4)
Connect to a regulated power supply. (10.7 ~ 16.0 V DC, Center pin – positive) For lower voltage
battery operation, set the internal jumper terminal for battery operation, and then connect external
batteries .
be connected together in the ARD9800 connector, or
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