Insat 3A/4B at 93.5°E-Asia-Europe wide beam : DD Doordarshan & reception quality

Insat 4B at 93.5°E-Doordarshan India : footprint , measurement point , HF system ...

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     Insat 4B at 93.5°E - wide SPOT : measurements taken in the town of Lučenec / central Slovakia
                                   a, geographical location :
Latitude: 48.33°  _   Longitude: 19.72°
                                   b, measurement results are derived from the 3.7 m diameter antenna
                                   c, ground without obstacles in the horizon length to 1000 m
                                   d, date of measurement : 5.2.2011
                                   e, elevation angle : 2.0°
                                   d, weather conditions : clear skies with light winds
                                   e, air temperature : from 0  to  10 °C at 13.00 p.m.
                                   f, altitude : 185 m /asl
                                  g, installation period and aggregation measured data : from 7.00 to 13.00 p.m.
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                 --- Insat 4B at 93.5°E-footprint : power levels are valid only until the beginning of a satellite failure ---
                                                            / Antrix corporation limited India /
     Insat 4B at 93.5 e-wide beam in C band-n
                                                                          click for enlarge
                 
                                   --- Insat 4B at 93.5°E : HF system , geographical location of measurement ---
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                  installed HF system                             theoretical footprint                               research point

    a, PF Prodelin 3.7 m                                                                                                 a, state : Slovak republic / Europe    
    b, LNB Norsat 8215                                                                                                  b, town : Lučenec
    d, cable lenght : 40 m                                                                                              c, geo. location : 48.33°_19.72°
Insat 4B at 93.5 e-wide beam-Doordarsham India-PF Prodelin 3.7mInsat 4B at 93.5 e-wide beam in C band-wInsat 3A-4B at 93.5 e-wide beam-DD Doordarshan India-reception point at lucenec slovakia
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Insat 4B at 93.5°E-Doordarshan : 3 725 H Packet Doordarshan & quality analysis

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                                  --- Insat 4B at 93.5°E : 3 725 H Doordarshan & spectrum analysis ---
                                                                         click for enlarge    
       Insat 4B at 93.5 e-wide beam-Doordarshan India-spectral analysis 01-n

  --- Insat 4B at 93.5°E : 3 725 H Doordarshan & QPSK constellation before and after the failure of the satellite ---                                                                          
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          1-9x10-5+++ : typical BER level currently         <1x10-6 : typical levels of BER against technical failure
  Insat 4B at 93.5 e-3 725 H Doordarshan India-QPSK constellation-02-nInsat 4B at 93.5 e-3 725 H Doordarshan India-QPSK constellation-01-n
                                        +                                                                                           +
  Insat 4B at 93.5 e-3 725 H Doordarshan India-Q analysis-current time-nInsat 4B at 93.5 e-3 725 H Doordarshan India-Q analysis-before the failure of the satellite-n

                               --- Doordarshan network & quality status of reception : 4.2.2011 ---

- during the six hour interval measurements I identified the three qualitative phase, associated with the persistent
failure of the satellite.Average level of quality within the timeframe from 7 to 9 am >MER=10-12 dB_from 10 to 11 am
>MER=8-10 dB_ from 12 to 13 pm >MER=11-13 dB .

                               --- Doordarshan network & quality status of reception : 2.10.2010 ---

3 725 H : Cyclically changing amplitude of quality ranging from 10.5 to 12.5 dB with a three-hour peak in quality to
the level of MER=14 dB,with full detection stability.Twenty-minute time frame defined cyclically recurring changes from
peak-high/MER=12.5 dB to peak-low/MER=10.5 dB.After the inclusion of HD transmission of the packet I have not
identified even once the ideal status of quality at bBER<10-6 and level of quality measurements in place fell on average
by 2 dB.In the last analysis that I have performed on 24.7.2010,the time frame of twenty minutes, often occurring
situation that lasted several minutes during which the error rate bBER did not fall below the bBER = <10-6.
In contrast with the second packet from the network DD Doordarshan at f=3 925 H I also currently identified
several ideal status of quality in bBER = <10-6 _ MERp=16.5 dB .

                               --- Doordarshan network & quality status of reception : 27.7.2010 ---

3 725 H : constantly alternating gain margin in a wide range of amplitudes from 5 dB_MER=10 dB
to 13 dB_MER=18+ dB.In the field of measurement and analysis of the quality is regularly repeated qualitative state
of absolute zero error rate BER before Viterbi decoder  >>> MER=15 + dB direct link to bBER=0 .

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Insat 4B at 93.5°E-Doordarshan network : 3 725 > 3 842 MHz H-pol & measurement results

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                                           Insat 4B at 93.5°E - Doordarshan network : 3 725 H Doordarshan
                           IF data                                                    Q data                                                    NIT data
Insat 4B at 93.5 e-3 725 H DD Doordarshan India-IF dataInsat 4B at 93.5 e-3 725 H DD Doordarshan India-Q dataInsat 4B at 93.5 e-3 725 H DD Doordarshan India-NIT data          

                                            Insat 4B at 93.5°E - Doordarshan network : 3 763 H DD Raipur
                           IF data                                                    Q data                                                    NIT data
Insat 4B at 93.5 e-3 763 H DD Raipur India-IF dataInsat 4B at 93.5 e-3 763 H DD Raipur India-Q dataInsat 4B at 93.5 e-3 763 H DD Raipur India-NIT data     

                                                 Insat 4B at 93.5°E - Doordarshan network : 3 768 H DD Ranchi
                           IF data                                                    Q data                                                    NIT data
Insat 4B at 93.5 e-3 768 H DDK Ranchi India-IF dataInsat 4B at 93.5 e-3 768 H DDK Ranchi India-Q dataInsat 4B at 93.5 e-3 768 H DDK Ranchi India-NIT data

                                              Insat 4B at 93.5°E - Doordarshan network : 3 797 H DD Manipur
                           IF data                                                    Q data                                                    NIT data
Insat 4B at 93.5 e-3 797 H DDK Manipur India-IF dataInsat 4B at 93.5 e-3 797 H DDK Manipur India-Q dataInsat 4B at 93.5 e-3 797 H DDK Manipur India-NIT data

                                            Insat 4B at 93.5°E - Doordarshan network : 3 815 H DDK Nagpur
                           IF data                                                    Q data                                                    NIT data
Insat 4B at 93.5 e-3 815 H DDK Nagpur India-IF dataInsat 4B at 93.5 e-3 815 H DDK Nagpur India-Q dataInsat 4B at 93.5 e-3 815 H DDK Nagpur India-NIT data

                                             Insat 4B at 93.5°E - Doordarshan network : 3 833 H DD Bihar
                           IF data                                                    Q data                                                    NIT data
Insat 4B at 93.5 e-3 833 H DD Bihar India-IF dataInsat 4B at 93.5 e-3 833 H DD Bihar India-Q dataInsat 4B at 93.5 e-3 833 H DD Bihar India-NIT data

                                         Insat 4B at 93.5°E - Doordarshan network : 3 842 H DD Guwahati
                           IF data                                                    Q data                                                    NIT data
Insat 4B at 93.5 e-3 842 H DDK Guwahati India-IF dataInsat 4B at 93.5 e-3 842 H DDK Guwahati India-Q dataInsat 4B at 93.5 e-3 842 H DDK Guwahati India-NIT data
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Insat 4B at 93.5°E-Doordarshan : live video recording of the instantaneous changes in the quality

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    --- Insat 4B at 93.5°E - 3 925 H DD Doordarshan : Live recordings from the reception quality ---


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  --- Insat 4B at 93.5°E - 3 725 H DD Doordarshan : Live recordings from the reception quality ---

                                                 
                                                    CZECH & SLOVAK DX SATELLITE CLUB
                                                         
international professional portal
                                                                            Think-Tank
                                                          Roman Dávid - author & founder
                                                          mail :
roman.david@dxsatcs.com

Insat 3A at 93.5°E-DD Doordarshan India : footprint , measurement point , HF system ...

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     Insat 3A at 93.5°E - wide SPOT : measurements taken in the town of Lučenec / central Slovakia  
                                   a, geographical location :
Latitude: 48.33°  _   Longitude: 19.72°
                                   b, measurement results are derived from the 3.7 m diameter antenna
                                   c, ground without obstacles in the horizon length to 1000 m
                                   d, date of measurement : 4.2.2011
                                   e, elevation angle : 2.0°
                                   d, weather conditions : clear skies with light winds
                                   e, air temperature : from +8  to  0 °C at 20.00 in the evening
                                   f, altitude : 185 m /asl
                                  g, installation period and aggregation measured data : from 15.00 to 20.00 p.m.
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     --- Insat 3A at 93.5°E-footprint : This diagram defines exactly practical signal coverage in the Asia-European scale ---
                                                            / Antrix corporation limited India /
  Insat 3A at 93.5 e-wide beam in C band-n
                                                                              click for enlarge
                 
                                   --- Insat 3A at 93.5°E : HF system , geographical location of measurement ---
.
                  installed HF system                             theoretical footprint                               research point

    a, PF Prodelin 3.7 m                                                                                                 a, state : Slovak republic / Europe    
    b, LNB Norsat 8215                                                                                                  b, town : Lučenec
    d, cable lenght : 40 m                                                                                              c, geo. location : 48.33°_19.72°
Insat 3A-4B at 93.5 e-wide beam-DD Doordarsham India-PF Prodelin 3.7mInsat 3A at 93.5 e-wide beam in C bandInsat 3A-4B at 93.5 e-wide beam-DD Doordarshan India-reception point at lucenec slovakia
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Insat 3A at 93.5°E-DD Doordarshan India : 3 760 V DD Chandana & carrier with the highest quality

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                                     --- Insat 3A at 93.5°E : 3 760 V DD Chandana & spectrum analysis ---
                                                                             click for enlarge
        Insat 3A at 93.5 e-wide beam-DD Doordarshan India-spectral analysis 01-w

                                    --- Insat 3A at 93.5°E : 3 760 V DD Chandana & QPSK constellation ---
                                                                             click for enlarge
       Insat 3A at 93.5 e-wide beam-3 760 V DD Chandana-QPSK constellation analysis-n
3 760 V DD Chanadana & QPSK Constellation : from a theoretical perspective, I almost reached the ideal status with
a peak level of quality at bBER=<1x10-6, which also defines the four carrier phases without any interference in the QPSK
quadrant.Typical error bBER level slightly oscillated at a level of 6x10-6 to <1x10-6,what is in the Central European
reception conditions satisfactory outcome !

                                         --- Insat 3A at 93.5°E : 3 760 V DD Chandana & quality analysis ---
                                                                             click for enlarge
     Insat 3A at 93.5 e-wide beam-3 760 V DD Chandana-quality analysis-n
                                      --- DD Doordarshan network & quality status of reception : 4.2.2011 ---

I have identified exceptional quality condition in which the gain level slightly oscillated in the range of quality peaks
from MER = 12.5 to 14.5 dB /in time span of 20 minutes/ which is the net gain margin of almost 10 dB at almost zero Ch BER !
Compared with recent measurements that I made in July 2010, I identified an average of about MER=2 dB higher gain level
for each carrier in the range of TP 1+2+3 .

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Insat 3A at 93.5°E-DD Doordarshan network : 3 732 > 3 831 MHz V-pol & measurement results

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                                          Insat 3A at 93.5°E - DD Doordarshan network : 3 732 V DD Bangla
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 732 V DD Bangla India-IF dataInsat 3A at 93.5 e-3 732 V DD Bangla India-Q dataInsat 3A at 93.5 e-3 732 V DD Bangla India-NIT data

                                           Insat 3A at 93.5°E - DD Doordarshan network : 3 740 V DD Punjab
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 740 V DD Punjab India-IF dataInsat 3A at 93.5 e-3 740 V DD Punjab India-Q dataInsat 3A at 93.5 e-3 740 V DD Punjab India-NIT data

                                            Insat 3A at 93.5°E - DD Doordarshan network : 3 750 V DD Girnar
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 750 V DD Girnar India-IF dataInsat 3A at 93.5 e-3 750 V DD Girnar India-Q dataInsat 3A at 93.5 e-3 750 V DD Girnar India-NIT data

                                          Insat 3A at 93.5°E - DD Doordarshan network : 3 760 V DD Chandana
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 760 V DD Chandana India-IF dataInsat 3A at 93.5 e-3 760 V DD Chandana India-Q dataInsat 3A at 93.5 e-3 760 V DD Chandana India-NIT data

                                          Insat 3A at 93.5°E - DD Doordarshan network : 3 772 V DD Oriya
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 772 V DD Oriya India-IF dataInsat 3A at 93.5 e-3 772 V DD Oriya India-Q dataInsat 3A at 93.5 e-3 772 V DD Oriya India-NIT data

                                           Insat 3A at 93.5°E - DD Doordarshan network : 3 781 V DD Kashir
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 781 V DD Kashir  India-IF dataInsat 3A at 93.5 e-3 781 V DD Kashir  India-Q dataInsat 3A at 93.5 e-3 781 V DD Kashir  India-NIT data

                                           Insat 3A at 93.5°E - DD Doordarshan network : 3 791 V DD Sahyadri
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 791 V DD Sahyadri India-IF dataInsat 3A at 93.5 e-3 791 V DD Sahyadri India-Q dataInsat 3A at 93.5 e-3 791 V DD Sahyadri India-NIT data

                                         Insat 3A at 93.5°E - DD Doordarshan network : 3 812 V DD Malayalam
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 812 V DD Malayalam India-IF dataInsat 3A at 93.5 e-3 812 V DD Malayalam India-Q dataInsat 3A at 93.5 e-3 812 V DD Malayalam India-NIT data

                                        Insat 3A at 93.5°E - DD Doordarshan network : 3 821 V DD Sapthagiri
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 821 V DD Saptagiri India-IF dataInsat 3A at 93.5 e-3 821 V DD Saptagiri India-Q dataInsat 3A at 93.5 e-3 821 V DD Saptagiri India-NIT data

                                           Insat 3A at 93.5°E - DD Doordarshan network : 3 831 V DD Podhigai
                           IF data                                                    Q data                                                    NIT data
Insat 3A at 93.5 e-3 831 V DD Podhigai India-IF dataInsat 3A at 93.5 e-3 831 V DD Podhigai India-Q dataInsat 3A at 93.5 e-3 831 V DD Podhigai India-NIT data

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Insat 3A at 93.5°E-DD Doordarshan : live video recording of the instantaneous changes in the quality

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                  --- Insat 3A at 93.5°E : 3 733 V DD Bangla & "LIVE" quality status ---

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               --- Insat 3A at 93.5°E : 3 832 V DD Podhigai  & "LIVE" quality status ---

                                                 
                                                    CZECH & SLOVAK DX SATELLITE CLUB
                                                         
international professional portal
                                                                            Think-Tank
                                                          Roman Dávid - author & founder
                                                          mail :
roman.david@dxsatcs.com