MAGNAVOX MX2400
STANDARD OPERATION PROCEDURES

To place calls from INMARSAT
Request Voice Call = 00
Country Code = 1 (USA)
Telephone Number = 713-241-2000
Send = #
NOTE: The # button is like the SEND button on a cell phone.

To call the INMARSAT
The INMARSAT system consists of four ocean areas. Each is covered by a satellite. Each satellite is assigned a "Country Code," thus, the international dialing.

Atlantic East - 871
Atlantic West - 874
Pacific Ocean - 872
Indian Ocean - 873

NOTE: From Houston, 874 is the code of the satellite we use.

Dial: (International outward dialing code used in the country you are calling from, for example, in the U.S., it is 011+XXX (ocean area)+XXX-XXXX (unit ID)

Screen Information Displayed Access

1 Down Link Selection F1
2 Files For Telex F2
3 Call Record F3
4 Aiming Parameters Shift F4
5 Technical Set-up Shift F5
NOTE: Shift F5 from screen 4


 

Data Calls
This is an analog channel, so modems will be required. Use modems that auto fall back to lower speeds in case the signal quality requires this. If problems occur, refer to instruction book on how to deactivate companders in the satellite.

Telex
Hit request button then hold down the number "1" until the telex screen comes up, access files, cursor to desired file, hit return. ZXZX cancels message.

Test Numbers

91# VOX 91+ Telex

Second Port
The unit has one voice channel, but two distinct I.D. numbers that it can receive calls on. They each have their own RJ-11 port marked main and aux. The main port is used for voice calls, the auxiliary port is used for direct receipt of fax or data calls.

Antenna Aiming (MX2400T / MX2400T+)
The antenna unit has a receive signal strength meter on the back. The satellites are located above the equator as indicated on the map. Set the "best guess" elevation (35 to 40 degrees in Houston) and move the antenna back and forth in the general direction of the satellite (Southeast from Houston.) If no signal, move the elevation about five degrees then try again. Then set the elevation for best signal. Remove the compass from the back of the unit before using for direction finding. Compass reliability is affected within 5 to 10 feet of the transmitter.