Communication Selection Guidance - AOR ARD9900 Instruction Manual

With reference to the points above, choose the most appropriate communication mode from the table
below:

Communication Selection Guidance

The following is a list of communication modes for the ARD9900. Choose the most suitable
communication mode for your application. The factory default setting is the non encryption
mode (Communication mode : 0).
Communication Mode
Mode
Non Encryption
Mode
Digital Squelch
Mode
Fixed Encryption
Mode
Random
Encryption Mode
1
Random
Encryption Mode
2
Random
Encryption Mode
3
Random
Encryption Mode
4
(Note: Encrpt: Encryption.
•
When the flag value is set to [80], enter the algorithm value for either [00] or [01] only. No other
value must be entered.
•
When the flag value is set to [00], enter algorithm value between [00] to [79]. No other value must
be entered.
•
The scramble function is valid only in the random encryption mode when the algorithm is set
Between flags [80 – 99]. During the communication, the encryption code will be changed every 20
mSec according to the algorithm.
Setting
Flag Algorithm Encrpt.
0 80 00
1 80 01
2 00 00-79
3 40 00-79
3 40 80-99
3 50 00-79
3 50 80-99
SQ: Squelch RX : Received transmission )
Function
SQ Air Key at
RX
No No ---
No Yes ---
Yes No Pre-set
Yes Yes Received
Air Key
Yes No Received
Air Key
Yes Yes Received
Air Key
Yes Yes Received
Air Key

Air Key TX Scramble
--- ---
--- ---
No Fixed
Pre-set Fixed
Pre-set Variable
Random Fixed
number
Random Variable
number