Yes. Load assignments, fueling and routing suggestions are sent to the truck through satellite communication system. The system allows you to communicate with Fleet management and many other departments within the company without ever leaving the truck.

In a relatively short period of time, satellite communications grew from a simple but successful experiment into a complex series of networks comprising a multi-billion-dollar industry. Phone companies use satellites to carry thousands of long-distance calls, businesses use them for data communications, and all phases of the television industry employ satellites to relay their programming from point-to-point. Satellites have solved a number of problems inherent in other forms of communications.

b) Some companies use their video conferencing system's cameras and microphones as a means to acquire a signal for broadcast over a satellite network.

Today, practically any size, as antennas the size of grapefruit and weighing 5 pounds or less are available. A circumnavigating rowboat has been fitted.

No. satcoms are supplemental. National and International regulations require VHF for inter coastal waterway/bridge to bridge communications and and/or MF/HF radio for ship to ship and coastal communications of greater distances.

Satellite may be a good choice for areas where there is no other high-speed service, but the cost is generally much higher in North America than wired service. In Africa, satellite is often the less expensive choice with the exception of the cost of the Earth Station. Dedicated two-way satellite service runs from around $3,500/month for 128kbps to over $10,000/month for 512kbps. Typically you will need to pay for the first 3 months in advance along with some setup fees.

Goddard Space Flight Center in Greenbelt, Maryland is the NASA center responsible for satellite programs. It has information on satellite images, the Hubble Space Telescope, space tracking and space debris. The phone number is 301-286-5566.

Telephones are either bought on the black market at up to ?400 or your name is put on a waiting list where you can wait for anything from a week to three years, depending on availability in your area. There is a small standing charge payable annually approximately 12.00. Lines are generally good and Internet access easy and well serviced. There is a national daily newspaper printed in English, the Turkish Daily News. A short-wave radio is useful to pick up the BBC World service.

The mission of the NCS is to assist the President, the National Security Council, the Homeland Security Council, the Office of Science and Technology Policy and the Office of Management and Budget, in the coordination of the planning for and provisioning of national security and emergency preparedness communications for the Federal Government under all circumstances, including crisis or emergency, attack, recovery and reconstitution.

Ms. Sallie McDonald is Director of the NCS. She is responsible for the day-to-day policy, technical, and programmatic oversight of all Federal government-wide activities in national security and emergency preparedness communications.

Mehmet Zeytinoglu has written a MATLAB toolbox for communications. It is available via anonymous ftp from ftp.mathworks.com as /pub/contrib/misc/comm_tbx.tar

Answer - The main advantage of T-1 is cost savings over equivalent service on regular analog lines. In general the cost of most 24 channel T1s is about the same as 12 standard telephone lines. This enables a business requiring 24 phone lines to do so for the cost of 12. Another advantage is that T-1 is a digital transmission and therefore less prone than regular phone lines to loss and interference.

Answer - Speed is the primary reason for data over T1. If a company transmits large files regularly outside their office an T1 can be a great asset as well as if they receive large amounts of Data. With the expansion of the internet and the requirement to send data at higher speeds, T-1 technology has been essential for dedicated T-1 lines.

A13. We have four short range radios (VHF, 1 installed 3 handheld), 1 long range radio (SSB), and 1 satellite phone. We get Internet access through the long range radio or sat phone, but it is very slow and gets very little bandwidth, so we can only really use it to receive and transmit small, text only email. We also have an EPIRB, which is an emergency satellite transponder with a GPS.

The PCT is fairly well marked and described in the guidebook such that most experienced trekkers would find a GPS superfluous and want to avoid the extra weight. This presupposes you can read a map and compass. By all means carry a small compass and you might consider a light pocket or watch altimeter to help find your location when landmarks are obscured by clouds. Mark them on your map, then at the next phone, call the PCTA at 888-PC-TRAIL to report the problem.