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Radio signals under 30 MHz (give or take) are reflected off the ionosphere back to Earth, whereas radio signals over 30 MHz (give or take) normally go straight through the ionosphere.
The maximum usable frequency (MUF) is the highest frequency reflected by the layers in the ionosphere. This frequency changes from day to night and with the seasons. It is also greatly affected by the 11 year sun spot cycle. Sun spots cause solar wind. This is a major cause for the ionisation of the ionosphere.
What else can I help you with?
Portions of the atmosphere used to bounce shortwave radio signals around the world?
Ionosphere
Which type of waves is not reflected by the ionosphere?
Microwaves are not reflected by the ionosphere because their wavelengths are too short for the ionosphere to effectively reflect them. This is why microwaves are commonly used for satellite communication, as they can pass through the ionosphere to reach satellites in space.
What is the type of wave is reflected by particles in the ionosphere?
Radio waves are reflected by particles in the ionosphere. These waves are commonly used in long-distance communication because they can bounce off the ionosphere and travel long distances by reflecting and refracting off the charged particles in the Earth's upper atmosphere.
What is a rf link transmitter used for?
An rf link transmitter is used to connect different repeaters together in a wireless network. A repeater is used to strengthen a wireless signal and provide better coverage.
What signals can bounce off the ionosphere and are sent back to earth?
Radio waves with frequencies below 30 MHz can bounce off the ionosphere and be sent back to Earth. This phenomenon is known as skywave propagation and is commonly used for long-distance communication. The ionosphere reflects these signals back to Earth, allowing them to travel beyond the line of sight.
Which type of electromagnet radiation is used in satellite communication networks?
Microwaves. These poke through the ionosphere to reach the satellite
What weapons were used by the Rats of Tobruk in World War 2?
Click on the link to your right for the weapons used.
Was the term ANZAC first used in world war 2?
No- it was first used in 1915- World War I. See link below-
Does the ionosphere bounce waves?
it just reflects waves radiated from the earth like telephone radiations and this is the thing that is used in satellites!
Sky wave antenna?
The term skywave is used to refer to the reflect radio waves from the ionosphere. ?æSkywave is used most frequently in shortwave radio broadcasts.
Type of radiation stopped in the ionosphere?
High-energy radiation such as gamma rays and X-rays are stopped in the ionosphere by interactions with the particles and magnetic fields present in this region of the Earth's atmosphere. The ionosphere acts as a shield, absorbing and scattering these types of radiation before they can reach the Earth's surface.
Why ground wave communication cannot be used for long distance using high frequency?
Frequencies over 30 Mhz normally travel through the ionosphere, whereas frequencies under 30 Mhz will normally bounce off the ionosphere, and back to earth.
