Astra 2D at 28.2°E-2D North footprint-sat dx : Freesat-ITV-BBC-Sky & reception quality H+V
ASTRA 2D at 28.2°E - UK SPOT BEAM
Archived measurement results from the period from 2006 to 2012
by Roman Dávid_founder of Think-Tank
►Astra 2D at 28.2°E-sat dx-Freesat-ITV-BBC-Sky : footprint , measurement point , HF system ...
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Astra 2D at 28.2°E - 2D North 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, date of measurement : 26.2.2011
d, elevation angle : 33.9°
e, weather conditions : sunny and clear sky
f, air temperature : from - 2 at 7.00 o'clock to +5 °C at 12.00 o'clock
g, altitude : 185 m /asl
h, installation period and aggregation measured data : from 07.00 a.m to 18.00 pm
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--- Astra 2D at 28.2°E-sat dx & footprint : 2D North ---
current status in EIRP levels in East European area : Prevailing local reception disparity in quality in terms of choice
of the V or H vector
- in case of receiving satellite Astra 2D in East European level, I can define the following an elementary rule : without
the initial measurements at the antenna installation is not possible to correctly define (with a high degree of probability) the
required diameter antenna to a stable reception of a TP in the plane waves H or V .
- the smallest antenna diameters for unstable carrier lock (in units of minutes to hours), depending on the geographical location
of the antenna installation location in Eastern Europe :
--- for packets broadcast in vertical polarization ---
in my point measurements : unstable from Dmin=140 cm and stable from Dmin=220-240 cm ( V pol sidelobe )
in other Eastern European reception areas : Dmin=90-270 cm
--- for packets broadcast in horizontal polarization ---
in my point measurements : unstable from Dmin=340 cm ....and stable form of reception for all TP from Dmin=???
in other Eastern European reception areas : Dmin=180-500 cm
click for enlarge
(astra 2D footprint image source : SES Astra S.A )
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--- Astra 2D-sat dx : HF system , geographical location of measurement ---
- with distance from the zone Beam peak, decreasing the probability that a stable form of reception will be sufficient for
the antenna diameter, which defines the broadcaster in this footprint > 75,90,120 cm ...
installed HF system theoretical footprint research point
a, PF Prodelin 3.7 m a, state : Slovak republic / Europe
b, dxsatcs waveguide line b, town : Lučenec
c, UNI LNB : NF=0.4-0.6 dB c, altitude : 185 m / asl
d, cable lenght : 40 m d, geo. location : 48.33°_19.72°
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Astra 2D at 28.2°E-Freesat-ITV-BBC-Sky : TP with the highest quality at the point of measurement
Freesat network-sat dx - TP 50 - 10 847 V - SR=22 000 - FEC=5/6
--- Astra 2D at 28.2°E-sat dx & qualitative point,which expresses the QPSK constellation and BER analysis ---
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a, Freesat network - TP 50 - 10 847 V : identification of the carrier in the range of vector V
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b, Freesat network - TP 50 - 10 847 V : QPSK constellation analysis
10 847 V : constellation analysis with only a slight disturbance which reflects the status of almost perfect quality
(ChBER<=6x10-6), which I cyclically identified in measurements of the transponder TP 50 in the timeframe from 12 to
13 hours,at reception point Lučenec-Slovakia . / PF 3.7 m
click for enlarge
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c, Freesat network - TP 50 - 10 847 V : quality analysis
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10 847 V : just in time frame from 12 to 13.00 pm I identify quality peaks on transponder TP 50, which is reflected a
cyclical downturn on the channel BER at levels equal to or approaching zero,with the MER values ranging from 13.4 to 14 dB.
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click for enlarge
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--- 10 847 V : BBC HD Uk & LIVE video recordings of the instantaneous changes in the quality ---
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Astra 2D at 28.2°E-sat dx : 10 714 > 10 936 MHz V+H & actual results of the measurements
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--- Astra 2D at 28.2°E-sat dx & actual measurement results of packets in the vertical and horizontal polarization ---
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 714 H Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 729 V Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 744 H Sky UK
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 758 V Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 773 H Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 788 V Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 803 H Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 818 V Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 832 H Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 847 V Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 862 H Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 891 H Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 906 V Freesat
IF data Q data NIT data
Astra 2D at 28.2°E-Freesat-ITV-BBC-BBC HD-ITV-ITV HD-Sky UK : 10 936 V Freesat
IF data Q data NIT data
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Astra 2D at 28.2°E-Freesat-ITV-BBC:live video recording of the instantaneous changes in the quality
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- Astra 2D at 28.2°E - 2D North footprint & current status in the quality of reception in the time period from 14:50 to 15:15 pm -
10 758 V-15:07 pm : ITV 1 London - Freesat network
10 788 V-14:50 pm : BBC One - Freesat network
10 847 V-14:50 pm : BBC HD - Freesat network
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