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  1. S

    addressing of a network

    MAC address is the physical address. it is pre assigned form manufacture. consider a server with built in LAN ports and Wifi. how would the hardware of server will know on which port the network is connect. Definitely it has different MAC address, Physical address which cant be change. while IP...
  2. S

    Sample and Hold Ic???

    why dont u use flip flops... it will act as buffer.
  3. S

    wireless network high distance

    definitely not 2MB/sec of transmission is enough for image and video signal transfer. The e1 will work for wireless transmission of any format.
  4. S

    Doubt in Network Addressing

    physical addressing it individual MAC address of the port where u connect to network however logical address is IP address that is assigned to you by the network. it is just like two strangers are meeting and third person is introduce them to each other. MAC address is permanent address it is...
  5. S

    need help in creating partions

    type df command in shell prompt. This will show u the all the drive that r made on ur system. Also there may be the case where u created partition on window based system first and then u tried to install it on anther drive then these drives might not been show.
  6. S

    wireless network high distance

    well we r connecting a computer with switch at remote distance exceeding the 18 miles in my organisation. we just simply used a protocol connverter that converts the ethernet into E1 and then we use wireless transmitter of e1. At receiving same transmitter system also act as receiver of E1 and...
  7. S

    Frequency and phase relationship?

    y(t)=A*sin(2*pi*f*t+phase) w=1/frequency. sin(w*t+phase) = sin(w*t)cos(phase)+sin(phase)cos(w*t) sin(phase) = cos(pi/2 - phase) Combined gives us: y1 = amp * sin(phase) y2 = amp * sin(w*t2 + phase) = amp*sin(w*t2)cos(phase) + y1 cos(w*t2) y3 = amp * sin(w*t3 + phase) = amp*sin(w*t3)cos(phase)...
  8. S

    voice recognition system for cars

    hello there i am designing a module for car security system. basically few selected people voices will be pre recorded in a system where the individuals will say e.g ENGINE START and the module compare their voice with the pre recorded voice. If their voice is same as that of already saved. The...
  9. S

    Dipole antennas gain vs length formula

    G={pi*(L/λ)²} ÷ {ε*c*(2*pi/3*ε*c)(L/λ)²} this is the formula for dipole antenna incase of its length
  10. S

    optical fibre transciever is giving problem

    we had made some connectivity of two switches (fastiron 446x) with optical fibre. the fibre was working smooth but then came a problem, one of the switch optical transceiver couldn't be able to receive the data. its transmission is good as i consulted with some network engineer. i want to know...
  11. S

    how to connect two remote computers??

    there different ways to connect computers. for example in Windows OS u can use the remote access tool. type the IP address and u could be able to connect two computers. But u have to enable the access at the other end. also u can use the telnet and ftp protocols for remote access and file...
  12. S

    The relation between frequency and range of wireless device

    a hypothetical radiating element will transmit equally in all direction but we can increase its radiation in our desired direction by using different techniques like phase shifting and using reflector to divert in one particular direction and increase its gain. Also, by making the power constant...
  13. S

    real time examples of fourier series

    take time dependent fourier analysis of radar sinusoidal pulse(pulse may differ from sinusoidal) anyways p(t)=p.'+p.''+½p.''+..................... where (p.) is the nomial range p.' is the velocity p.'' is the acceleration and so on
  14. S

    How can I know the IP address of e-mail sender?

    well u just have to type the someone@company.com.readnotify.com at the end of the email address of receiver
  15. S

    I need help, what courses do i need ?

    could u elaborate how can one improve his RTOS basic concepts. Also is there any course like, CCNA for networking, RTOS related short course.
  16. S

    How can I know the IP address of e-mail sender?

    Certified email with delivery receipts, silent tracking, proof-of-opening history, security and timestamps. can help you trace the email and also tell the nearest location from where the email originated.
  17. S

    windows xp and windows7

    check whether ur Windows 7 is 32-bit or 64-bit because most of the software work fine in 32-bit OS but when installed in 64-bit they raise compatibility issues. Also sometimes window XP software that are working fine in 32-bit OS, gave problem on windows 7 32-bit version. For this you right...
  18. S

    How to start learning antenna --- need help

    your must start from basic, the ABCs of antennas. i must say build your concepts with Hypothetical point sources, their electromagnetic field gain remains the same in all direction and their effect on each other especially when they are phase shifted and seperation between them is varied, for...
  19. S

    advantages of FM over AM

    i take my word back. "AM carrier frequency is more dependent on antenna length and orientation".
  20. S

    advantages of FM over AM

    i think, i talked about the carrier frequency which your r modulating (making changes in form of amplitude, frequency and phase).

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