Motorola 8400
Activate RBS
(Note: pause means the * key held in until box appears)
To activate RBS type: [pause] [pause] [pause] 1 1 3 [pause] 1 [pause] [ok]
You now have to press the [MENU] and scroll to the 'Eng Field Options' function with the keys, and enable it.
De-activate RBS
To de-activate RBS type: [pause] [pause] [pause] 1 1 3 [pause] 0 [pause] [ok]
This only works with some versions of software.
These countries has been reported working:
IT, NL
What's the use of RBS:
Get Distance From Base Station - Place a call, when it is answered, press [MENU] until 'Eng Field Option' is displayed, press [OK], select 'Active Cell', press [OK], press [MENU] until 'Time Adv xxx' appears, where xxx is a number. Multiply this number by 550, and the result is the distance from the RBS (Radio Base Station), in meters.
Get Signal Quality - press [MENU] until 'Eng Field Option' is displayed, press [OK], select 'Active Cell', press [OK], press [MENU] until 'C1' appears. This is the signal quality. If it becomes negative for longer than 5 seconds, a new cell is selected.
Pin Outs
Numbered left to right, keypad up, battery down
1. Audio Ground
2. V+
3. True data (TD) (input)
4. Downlink - Complimentary data (CD) (input)
5. Uplink - Return data (RD) (output)
6. GND
7. Audio Out - on/off
8. Audio In
9. Manual Test - ???
10. Battery Feedback
11. Antenna connector
MOTOROLA MOBILES
Motorola 8400 SECRETS CODE
1:33 PM
NADEEM AKHTAR