The amount of time it takes to transmit a signal from Mars to Earth or from Earth to Mars using the High Gain Antenna varies according to the relative positions of Earth and Mars in their orbits around the sun. At the time of the July 4th landing, it took approximately 10 minutes to transmit a signal.

Seasons are caused by the inclination of a planet's rotational axis relative to the plane of its orbit around the sun. Earth's axis is inclined 23.5 degrees. On the first day of summer in the northern hemisphere, Earth's north pole is tilted 23.5 degrees toward the sun, so the northern hemisphere receives more sunlight. Half a year later, on the first day of winter, Earth's north pole is tilted away from the sun, so the northern hemisphere receives less sunlight.

Finding life on Mars would excite researchers for a variety of reasons. Firstly, it would just be interesting to know that life did (or does) exist elsewhere in the universe. Humans have been wondering about this question almost as long as we have been in existence. Finding evidence that suggests that we may not be alone, that Earth is not the only planet capable of sustaining life, would be an amazing revelation. As for scientists, many want to know how and why life was created on Earth.

When comparing our antenna to others it is important to realize that the gain other antennas are rated in do not take in the obstruction factors in real life scenario's such as tree tops, buildings, and frenel effect. Our gain is quoted with a moderate amount of obstruction calculated in. Our 5dBi ultra-omni can out perform a 10dBi antenna in an obstructed environment. Beam or yagi style antennas using higher gain for further distance may over shoot valleys.

A common misconception is that antennas actually amplify the signal and that is what is meant by 'gain'. Antennas do not amplify signals unless they have an active component. What is normally meant is that signal strength (gain) is sacrificed in one direction to gain it in another.

There are two basic reasons: first, usually the coax length negates the advantage of the antenna; second, the antenna requires a small circuitboard to turn on the external antenna port on the Base Station.

with all things wireless, the site needs to be considered first, distance, obstacles, etc. There are two basic reasons; first, usually the coax length negates the advantage of the antenna; second, the antenna requires a small circuit to turn on the external antenna port on the Base Station.

You can always see the size of your current order in the status line at the bottom of the screen under "Order Creator". Here, you will find the number of images and the size of the order in KB or MB. The following table provides you with a minimum time for the transmission of images.

We claim to be able to up to double(+) current coverage. How far an antenna will go is a factor of how much power or gain it has and obstructions/interference. Distance is lost as gain is lost. Signal is reduced as obstruction is encountered. Our ratings takes into account calculations that assume moderate obstructions will be encountered (some tree tops, some buildings). Others use a line of site above the freznel zone in specifications.

Yes, the stock antenna is 8.5" long making mounting the antenna easy. What is more, if you prefer a shorter antenna, you can carefully cut the Spektrum receiver antenna to just 3.6" and not lose any performance. This way, you can keep the antenna inside the body.

Essentially, an analemma is the pattern the sun makes in the sky if you plot its position at noon every day in the course of a year. If one had a sextant, a chronometer set to the time and date on the prime meridian, and an analemma chart, one could determine one's position with fairly good accuracy. The shape of the analemma is influenced by the magnitude and phasing of two factors: axial inclination and orbital eccentricity.

Orbiter now includes Duncan Sharpe's TransX MFD mode, which is a great tool for setting up interplanetary routes. You need to activate the TransX module in the Orbiter Launchpad dialog to use this. TransX is quite a complex navigation tool, so to understand the concept and options, make sure you read the TransX manual (in the Doc folder) carefully.

Mars and Earth are like two cars on a racetrack as they journey around the Sun. Earth is on the inside track and travels faster than Mars, which is on the outside. When Earth laps Mars about every two years, it comes as close as 35 million miles (56 million km) or as far away as 63 million miles (101 million km) because of Mars’ highly elongated orbit.

For two reasons, an Earth calendar will not work on Mars. First of all, a Martian sol is nearly forty minutes longer than an Earth day. This may not seem like much, but over the course of a month this difference accumulates to nearly an entire day. So if one tried to use an Earth calendar on Mars, the months that contain 31 days on Earth would generally have only 30 sols on Mars, and most of our 30-day months would be only 29 sols long on Mars.

Just about any astronomy book will tell you that the rotational period of Mars is 24.6229 hours, or 24 hours, 37 minutes. However, note that the same table also gives Earth's rotational period as 23 hours 56 minutes. But isn't Earth's day 24 hours long? What happened to the missing four minutes? The difference is that the 23 hours 56 minute figure is a sidereal day, i.e., Earth's rotation is measured from the point of view of a fixed reference angle.

Just about any astronomy book will tell you that the orbital period of Mars is 686.9726 days. But this measurement is in 24-hour Earth days, not Martian sols, which are almost forty minutes longer. If you lived on Mars, you would count 668.5921 sols from one vernal equinox to the next. The axis of Mars precesses through one complete cycle over a period of 93,000 Martian years (175,000 Terran years). This causes the tropical year to be longer than the sidereal year by 0.0072 Martian day (0.

The Sun is about 93 million miles, or 150 million kilometers, away from the Earth. The speed of light is 186,000 miles per second or 300,000 kilometers per second. Therefore it takes about 500 seconds or a little over 8 minutes for the Sun's light to reach the Earth.

Some Verizon Wireless PC Cards may come with either a removable antenna or an extra connection port for an external antenna. This can be used when you are inside a building or a car to help pull in a stronger signal and improve your connection in fringe or low reception areas. Verizon Wireless provides two types of external antennas: Window Mount is mounted on the edge of a car window or attached to the window in a building. An adaptor cable will be required to connect the external antenna.

This depends on how much needs to be done for a potential centre to satisfy their approved centre criteria and how quickly any necessary measures are implemented. A GQA External Verifier/auditor will visit a potential centre to monitor approval criteria and this usually takes one day.

The unit of antenna gain is dBi. dbI means "Isotropic", a perfect POINT SOURCE, which radiates in a spherical manner. A perfect dipole radiates with a donut pattern, broadside to the long dimension of the dipole. It is a relative measurement to an ideal dipole that radiates in a perfect sphere. To achieve higher gains, antennas are constructed such that they radiate more in one direction than another.