®
ARD9800
FAST RADIO MODEM
Multi-Mode and Digital Voice Interface
Operating manual
AOR, LTD.
1
Thank you for purchasing the AOR ARD9800 Multimode And Digital Voice Interface.
The ARD9800 is designed to convert your HF radio equipment to a multi mode
and digital voice radio without performing any modifications to your transceiver.
Please read through this instruction manual and familiarize yourself with the
operation of the ARD9800. We suggest you to keep this instruction manual for future
reference.
We believe you will enjoy using the ARD9800 as an enhancement to your enjoyment
of amateur radio.
AOR, LTD.
2
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
transceiver.
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 ODFM (Multi Carrier Modulation)
circuit that is effective 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). Built-in video capture function (NTSC or PAL
depending on version). Compresses the signal into our original adaptive JPEG. Send
and receive images (similar to analog slow scan TV, but higher resolution) in the
Digital mode. Built-in video output connector (NTSC or PAL depending on version)
allows viewing the picture on an external monitor.
Built-in high grade Vocoder (AMBE). Uses high grade digital voice compression to
deliver 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 possible for field use.
3
Precautions
To 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 or 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
in propagation or the operating environment.
4
Table of Contents
Page
Supplied Accessories ---------------------------------------------------------- 5
Controls and functions -------------------------------------------------------- 6
Front Panel ------------------------------------------------------------------- 6
Rear Panel -------------------------------------------------------------------- 8
Top Panel ----------------------------------------------------------------------- 10
Internal View ------------------------------------------------------------------ 10
Bottom View ------------------------------------------------------------------ 11
Interfacing the ARD9800 ------------------------------------------------------ 12
Connection to a Radio ----------------------------------------------------- 12
Connection to a Microphone -------------------------------------------- 13
Connection to a PC -------------------------------------------------------- 13
Connection to a Power supply ----------------------------------------- 13
Connection to an external speaker ------------------------------------ 14
Presetting ----------- ------- --------- ----------------- ------------------ - -- 15
Output Level to Radio Transceiver -------------------------------------------- 15
Microphone Level ----------------------------------------------------------------- 16
User ID Setting ------------------------------------------------------------------- 17
TX Channel Setting --------------------------------------------------------------- 17
Operation ----------------------------------------------------------------------------- 19
Voice Communication ----------------------------------------------------- 19
Digital Voi ce Communication -------- ----------- -------------- --- 19
Analog Voic e Communi c atio n -- --- ---- - ---- ---- ---- - ---- --- - --- 19
Data Communication ------------------------------------------------------- 19
Receive --------------------------------------------------------------- 19
Transmit ------------------------------------------------------------------ 19
Digital Image Communication ------------------------------------------ 20
Receive ------------------------------------------------------------------ 20
Transmit ----------------------------------------------------------------- 20
Specifications ------------------------------------------------------------------------ 21
Control Commands ------------------------------------------------------------- 22
Command List -------------------------------------------------------------------------- 24
5
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
8P metal plug (for radio cable) 1
Instruction manual 1
6
Controls and Functions
Front Panel
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a. Power on/off switch
b. TX switch
Press this switch to capture image and send. When the Video Through
Function is activated (AVT command is ON), pressing this switch will
enable output of the video signal connected to the Video Input to be
bypassed to the video output so that you can monitor the video image. Press
this switch again to capture the image and then transmit it 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 20 for details.
c. 2 color LED
Illuminated red The unit is in the transmit mode
Blinking red In the digital communication mode, it blinks while
Illuminated Green The unit is in the receive mode
Unlit The unit is in the receive standby mode or in the
d. Status LED (STA LED)
It is lit when unsent data remains in the memory.
It is lit with orange color when Video Through Faction is activated in digital
video communication mode.
It is not lit when Video Through Function is deactivated by the dedicated
command (AVT_OFF) though PC. Because, TX switch activates a sequential
faction of capturing and transmission.
It is also lit with orange color when unsent data is remained in the memory in
the data transmission mode.
SSSSPPPP CCCCHHHHAAAANNNNTTTTXXXX SSSSTTTTAAAA MMMMOOOODDDDEEEE
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the header information is being sent. (approximately
one (1) second)
analog voice receive mode.
7
6
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MaxMin
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e. Speaker volume adjustment
Adjustment for internal speaker output level. When an external speaker is
connected, external speaker level is also adjusted.
f. Operation Mode LED (3 colors)
Indicates the current operation mode:
Green color Digital Voice mode
Red Color Analog Voice mode
Orange Color Data Communication mode
Not lit Digital Image Communication mode
g. Transmitting channel (Rotary Switch)
It consists of 16 channels. Each channel can be programmed with a
Transmitting ID for distant station, NetMask, etc. Freely programmable
depending on the communications scheme.
h. Overload indicator
Lit when the microphone input is overloaded.
A proper microphone input level will light the LED from time to time when
speaking into the microphone at a normal voice level. The microphone level
can be changed by adjusting the microphone level controller.
Refer to Level Adjustment - Output Level to Radio Transceiver at page16
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 appropriate operation mode.
j. Microphone connector
Connect the supplied microphone to this connector. Below are the pin
assignments of the connector.
1. Speaker output (SP-OUT)
Monitor output signal is present at this pin.
2. BIAS
Power source for an electric condenser type of microphone. 5V DC
through 2.2KΩ resistor.
3. GND
Chassis ground
4. TX
Grounding this pin will enable the transmit mode.
(Same operation as the TX switch on the front panel.)
8
5. D/A
Grounding this pin 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 To Talk) input.
7. MIC GND
Microphone ground signal
8. MIC IN
Microphone signal input
Rear Panel
AOR,LTD.
VIDEO
IN OUT
RADIO
OUT
SP
IN
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DC IN
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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: 9600bps
Data Length: 8
Start bit: 1
Stop bit: 1
Parity: None
Synchronization: Asynchronous
Flow control: Hardware
9
l. VIDEO - IN connector (75ΩΩΩΩ)
Connect a video signal source such as a digital camera.
m. VIDEO – OUT connector (75ΩΩΩΩ)
Connect a video monitor to this connector to monitor the received image or a
picture to be sent.
n. RADIO Connector
Using the supplied 8 pin connector, connect the ARD9800 to your radio
equipment. You will need to wire a cable according to the microphone
connector specifications of your radio (refer to your radio’s manual).
Below are the pin assignments of the ARD9800 connector.
Pin number Signal Details
1 MIC GND Microphone ground
2 MIC OUT Microphone Output
3 PTT (H) PTT (Push To Talk) output (High level)
4 PTT (L) PTT (Push To Talk) output (Low level)
5 NC No connection
6 NC No connection
7 GND Ground
8 NC No connection
Note: MIC GND and GND must not be connected together in the ARD9800
connector, or 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: Output signal from the accessory connector of the radio may not be
high enough to use for this purpose.
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 Type 4)
Connect to a regulated power supply. (10.7 ~ 16.0 V DC, Center pin – positive)
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