| Home |
| Search |
| Today's Posts |
|
#10
May 13th 04, 08:15 PM
|
|||
|
|||
Harris wrote:
JJ wrote: Arthur Harris wrote: The signal will decrease by 6 dB every time you double the distance. MIR was about 250 miles above Earth, and you could establish communicaion with fairly low power when it was overhead. On the other hand, Mars is about 35 million miles away! You'd need a LOT more power and antenna gain to contact Mars. Voyager 1 is just over 90 Astronomical Units or 8.4 billion miles from the sun, transmitting with approximately 2 watts and signals are still being received here on earth. How do you account for that? A steerable 12-foot dish on the spacecraft, and HUGE antenna arrays on Earth. So you don't need a LOT of power to contact Mars. |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| Attention MARS & Ex MARS Operators | Policy | |||
| What is the deal with the MARS stuff? | Policy | |||
| Attention MARS & Ex MARS Operators | Antenna | |||
| Attention MARS & Ex MARS Operators | Dx | |||
| Attention MARS & ex MARS Operators | Boatanchors | |||
Threaded Mode
