Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the mechanisms of propagation of radio communication.
Radio communication deals along with electronic radiation of electromagnetic energy from one point to other by the atmosphere or free space. This is possible only in a definite position of the electromagnetic frequency spectrum. Currently, this portion involves frequencies from 9 kHz to 400 GHz. Though there are international allocations for the radio spectrum up to 275 GHz, mainly the commercial uses take place among 100 kHz and 20 GHz. Very little experimental systems have been operated beyond 100 GHz.
Various layers of the atmosphere play a task in propagating radio waves. The atmosphere contains four layers. Of the four layers, the troposphere and ionosphere are helpful for radio communication in definite frequency ranges. Certain another radio frequency passes straight by the atmosphere and can be beamed towards satellites replaced into the interplanetary space. Depending upon the mechanism of propagation, radio communication can be placed in four categories:
1. Sky wave or ionosphere communication
2. Line-of-sight (LOS) microwave communication limited through horizon.
3. Troposphere scatter communication
4. Satellite communication.
Would you like to easily automate your MS Access database through menu driven selections? This can be accomplished by producing a form with customized buttons that point to macr
Tell me which queue having present queue depth should be greater than zero? Ans) Event queues Open MQ Explorer by selecting Start > Programs > IBM WebSphere MQ > WebSphere
Iterative Deepening Search: So, breadth first search is always guaranteed to find a solution (if one exists), actually it eats all the memory. For the depth first search, ther
Explain new services of CPU Based Exchange. These new services are termed as supplementary services and several of the prominent ones are given below as: Category 1:
What is Supply Chain Management? Supply Chain Management: Supply Chain Management includes developing the performance of an organization's supply chain from its suppliers to
what is polymorphism
Channel means logical communication link. There are two parts of channels a) Message channel, b) MQI channel 1) Mesage channel use for communication among QMgr to Q
Explain the Architectural framework for electronic commerce. An application independent framework to categorize service interaction relies on four basic dimensions 1. Ser
What are advantages and drawbacks of flip-flop? Usually area of a Flip-flop for features in more than a latch. Power consumption is normally higher, because of the area and
What are the two different ways of building a match code object? A match code can be built in two dissimilar ways: Logical structure: The matchcode data is set up not pe
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd