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Microwave Transmission

Viewing 9 posts - 106 through 114 (of 114 total)
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  • 2nd May 2007 at 13:20 #38418
    Imran Sabir
    Guest

    Hi JYOTI PARKASH :
    While clculating the interfernce through Pathloss you can take(in order to be on the safe site)a radius of upto 75km.Anyhow it depends upon the frequency band you are using.
    Since lower frequencies travel larger distances than the higher ones.Secondly Pathloss calculate the interfernce using Flat Earth Model (considering earth to be completely flat) so most of the interference reports generated by Pathloss does not even exists due to the reason that earth is not flat and most of interference is blocked by the earth terrain itself.

    2nd May 2007 at 13:25 #38419
    Imran Sabir
    Guest

    Hi Md. Nasir Uddin
    Higher the capacity lesser is the sensitivity.
    Sdh radios are more sensitive than PDH as you can check them by their SENSITIVITY.
    Typically PDH has a threshold of -72dbm while those for SDH is in between -67 to -69dbm.
    The reason is noise floor of the radio.Due to complex modulation techniques the noise floor is greater in higher capacity radios as a result of which their sensitivity decreases.

    13th May 2007 at 13:45 #38420
    Vivek
    Guest

    Hi all
    I have an Query that Can we calculate C/I using Pathloss 4.0 and If yes how

    31st March 2010 at 10:19 #38421
    Karan
    Guest

    Hi,

    What all are the reasons for ES, SES, UAS, BBE in a PDH microwave link?
    plz reply….

    5th April 2010 at 04:25 #38422
    Karan
    Guest

    Hi guys plz reply if any body knows?

    8th June 2010 at 03:44 #38423
    Alain Nemours
    Guest

    Hi can anybody tell me what the exact causes of a UAS alarm . In my point of view i think this alarm generated when theres a hardware failure like ODU and DRAWER faulty and sometime it is due to rain faiding. Please advice.

    9th June 2010 at 13:31 #38424
    KJ B
    Guest

    Maheen,

    As per my understanding,if RSL on both sides are OK and there is not any Error Rate alarms on MW as well.

    SES,ES may appears on site B.
    If this is Nokia PDH,this is related to Error in interface means E1 level problem.If there is any problem in patching and cabling at any point in the transmission route these ES will be appeared.

    Thx
    KJ

    31st October 2010 at 14:58 #38425
    assia
    Guest

    hello,
    I am an electrical engineer,
    Olease i want to know in details about the “Frequency Diversity” with equations.

    22nd February 2020 at 15:44 #71473
    Akbar Ali
    Guest

    Could anyone explain about 0.3 MW dish?

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Viewing 9 posts - 106 through 114 (of 114 total)
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