DD HD India : the first HD broadcasts in the packet DD Direct + and an analysis of the reception
of Insat 4B satellites in Central Europe
a, Insat 4B at 93.5°E-DD HD in the packet DD Direct + : indian beam which define the satellite operator
b, Insat 4B at 93.5°E-DD HD in the packet DD Direct + : spectral analysis of the vertical wave vector
c, Insat 4B at 93.5°E-DD HD in the packet DD Direct + : Peak Memory - spectrum analysis function in practice
d, Insat 4B at 93.5°E-DD HD in the packet DD Direct + : results of quality measurement and reception conditions
e, Insat 4B at 93.5°E-DD HD in the packet DD Direct + : video recording of spectrum analysis and carrier lock with DD HD
f, Insat 4B at 93.5°E-DD HD in the packet DD Direct + : Image of HD video broadcasting
g, Insat 4B at 93.5°E-DD HD in the packet DD Direct + : videos of the Indian broadcasting HD
a, DD HD in the packet DD Direct + : indian beam which define the satellite operator
Insat 4B at 93.5°E - Indian footprint :research activities and the measurement is in town Lučenec-central Slovakia
geographical location : Latitude: 48.33° _ Longitude: 19.72°
measurement results are derived from the 3.7 m diameter antenna
ground without obstacles in the horizon length to 1000 m
date of measurement : 18.9.2010
elevation angle : only 2.0°
High Frequency Unit point measurements Insat 4B at 93.5°E
PF Prodelin 3.7 m all research and measurements Packet DD Direct Plus India
dxsatcs waveguide line+Norsat 4206 CF I carried out at this point value of the elevation angle 
--- Insat 4B at 93.5°E -Packet DD Direct plus : footprint ---
--- Insat 4B-theoretical footprint of the KU band ---
real coverage area : Asia , Middle East , part of Europe
click for enlarge
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b, DD HD in the packet DD Direct + : Insat 4B at 93.5°E-spectral analysis of the vertical wave vector
- identification of the carrier packet DD Direct + in the spectrum of the vertical vector of the satellite Insat 4B -
click for enlarge
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c, DD HD in the packet DD Direct + : Peak Memory - spectrum analysis function in practice
- function that defines the amplitude of the oscillation EIRP levels over a period of 20 min. in ideal weather conditions -
click for enlarge
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d, DD HD in the packet DD Direct + : results of quality measurement and reception conditions
- 10 990 V packet DD Direct + India : MPEG-4 /FTA - DD HD in the network information table -
click for enlarge
DD HD : Commonwealth games promo DD HD : quality analysis DD HD : NIT data
current reception status in Central Europe, after a significant decline in transmission power of 7.7.2010:
___ reception status of 15.8.2010 ___
EIRP transmission power level in the central European zone fell by an average of 40-45%,which is reflected in the quality
of reception follows.Average reception quality, expressed in the unit MER=9.5-11.5 dB (with occasional peak at MER=15+ dB)
now has fallen to a level within MER=7.5-8.5 dB with occasional peak at MER=11+ dB.Reception is significantly disturbed
by permanent oscillation, which within a period of three minutes, reaching two peaks in the range of amplitude MER from
4 dB-levels of detection to MER=8-11 dB .This is an unstable form of revenue with a high level of variable gain within
MER= +/-3.5 dB _ 180 sec .
___ reception status of 18.9.2010 ___
in ideal weather conditions for receipt of Insat 4B satellites and the elevation angle of only 2° I identify periods in length to ten
minutes, during which the gain margin did not fall below the threshold level of detection at MER=4 dB and constantly oscillated
in the "gain range" from MER=6 to 10 dB,which perfectly expresses the following spectrum analysis function Peak memory.
Subsequent slight deterioration in weather conditions have a direct relationship with increased oscillation EIRP levels and
frequent outages in the locked carrier packet DD Direct + !
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e, DD HD in the packet DD Direct + : video recording of spectrum analysis and carrier lock with DD HD
- MPEG-4 /FTA - DD HD India in the packet DD Direct + : LIVE spectrum + quality analysis , NIT -
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f, DD HD in the packet DD Direct + : Image of HD video broadcasting _ 1920x1080_interlaced
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- MPEG-4 /FTA - DD HD India in the packet DD Direct + : Delhi 2010 / Commonwealth Games promo -
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CZECH & SLOVAK DX SATELLITE CLUB
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think-tank
Roman Dávid - author & founder
mail : roman.david@dxsatcs.com