Why the singnal of wireless/Tv in db value? and why it is
showing in minus(-)?

Answer Posted / reza r

Very large and very small values in mathematics can be
mentioned by dB. dB is a logarithmic calculation that
normalizes the value of a factor.

- sign in the value of a signal is because of noting that
the signal is incoming to the antenna (received signal) not
the transmitted one!

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

I've finished b tech in electronics and communication engg.Can i appaer for the nic exam

1642


I AM DOING MY ELECTRONICS AND COMMUNICATION ENGINEERING.I NEED SOME SUGGESTIONS REGARDING THE COURSES THAT I CAN STUDY SO THAT I GET BETTER CHANCES FOR JOBS..WAITING FOR SOME SUGGESTIONS IN yamini1825@yahoo.com..THANK YOU

1475


what is a tetrode transisitor ? show the structure of such a device and indicate the polarity of the biasing voltage applied to each element?

1421


What is back diode?

606


What are the maintenances of a DCS ?

1412






What are the fundamental properties of boolean algebra?

544


Which uplink/downlink spectrum is allocated to DCS-1800?

1899


1.Explain 3D radar. 2.Method of mobile signal jamming. 3.Frequency hopping spread spectrum. 4.How does op-amp works in common mode? 5.Which flip flop is known as universal flip flop and why?

1689


What are the characteristics of ideal opamp?

628


why would you like to join jindal steel and power? in 200 words

3218


Why are using 4ma to 20ma for signal transfer. Why not 0 to 20ma?

573


pls send my id for supervisor model paper qustion

1687


hi i am electronics & telecomm engg & appling 4 the AAI jr executive (electronics/ATC) written test. pls forward me the syllabus & old question papers.I will be very much thankful to you. shahrukhkhalid911@gmail.com and shahrukh_khalid911@yahoo.co.in

1429


What is a p-n junction diode?

610


State faraday`s law of induction.

593