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 /
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°
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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 ---
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--- 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
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--- 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 - Doordarshan network : 3 763 H DD Raipur
IF data Q data 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 - Doordarshan network : 3 797 H DD Manipur
IF data Q data 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 - Doordarshan network : 3 833 H DD Bihar
IF data Q data NIT data
Insat 4B at 93.5°E - Doordarshan network : 3 842 H DD Guwahati
IF data Q data 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 /
click for enlarge
--- Insat 3A 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°
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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 ---
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--- Insat 3A at 93.5°E : 3 760 V DD Chandana & QPSK constellation ---
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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 ---
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--- 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 - DD Doordarshan network : 3 740 V DD Punjab
IF data Q data 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 - DD Doordarshan network : 3 760 V DD Chandana
IF data Q data 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 - DD Doordarshan network : 3 781 V DD Kashir
IF data Q data 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 - DD Doordarshan network : 3 812 V DD Malayalam
IF data Q data 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 - DD Doordarshan network : 3 831 V DD Podhigai
IF data Q data 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