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  1. #1
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    communication and signal interview questions

    Hi friends

    Let us start posting some basic interview questions onCommunciations/Wireless Technologies /Mobile ........ /Antennas /Microwave ..../Electromagnetics....

    Please every contribute and share your experience in interviews by posting few basics of communications like

    What s the need for modulation ?

    Why AM range is more than FM ?


    Like these simple questions along with answers .Its very helpful to all .

    Improve our basics by this way......

    Thanking you friends,

    Regards,
    Goud

    Added after 11 minutes:



    1) What s the AM radio frequency range ? AM signal bandwidth ?
    Ans:

    AM radio ranges from 535 to 1705kHz ===> 1170 kHz

    AM signal bandWidth is 10 KHz ==> ideally speaking total 1170/10 ==> 117 different channels available for AM radio stations .

    2 ) United States can have nearly 5,000 AM radio stations on only 117 different frequencies How ?
    Ans :

    Signals of stations tend to be limited in their range, you can use some of the frequencies many times — as long as the stations are far enough apart geographically.

    3) How far an AM station's signal travels depend s on which factors ?

    Ans:

    1)Station's frequency (channel),
    2)The power of the transmitter in watts,
    3)The nature of the transmitting antenna,
    4)How conductive the soil is around the antenna (damp soil is good; sand and rocks aren't),
    5)Ionospheric refraction. (The ionosphere is a layer of heavily charged ion molecules above the earth's atmosphere.)



    Regards,
    Goud

    •   Alt1st March 2007, 17:33

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  2. #2
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    telecommunications interview questions

    can you plz give me idea that what sort of questions may be asked for core network interview?

    thank you

    dipu



    •   Alt2nd March 2007, 10:29

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  3. #3
    Member level 5
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    radio frequency technician interview questions

    1)What are the different types of internetworking/networking devices ?
    Ans:
    Repeaters,Bridges,Routers,Gateways

    2)What is MAC address?
    Ans:
    The address for a device is identified at the Media Access Control layer in the networking architecture.MAC address is usually stored in ROM on the network adapter card is unique.

    3)What is redirector?
    Ans:
    Redirector is software that intercepts file or prints I/O requests and translates them into network requests.This comes under presentation layer.


    Regards,
    Tarakapraveen Uppalapati Goud



    •   Alt2nd March 2007, 10:57

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  4. #4
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    Interview Questions on Communications - Please Contribute..

    difference between SNR and Eb/No



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