Intelsat 901 / MEV1 mission

S

stone96it

New Member
Messages
5
My Satellite Setup
Channel Master 120
My Location
Italy, Tuscany
In my humble opinion, the signal has slightly decreased.
Channell Master 120 from northern Tuscany.
 
C

cocotcocot

New Member
Messages
5
My Satellite Setup
1.8m CM, 1.2m CM, T90 toroidal, 1m rotor, 1m fixed
My Location
France
In my humble opinion, the signal has slightly decreased.
Channell Master 120 from northern Tuscany.
In Berlin, on a 1m dish /SF 8008, the signal is increased by 10.2 to 11.2db
 
John777

John777

Member
Messages
52
My Satellite Setup
Icecrypte
My Location
Uk
Still know movement on flysat and they usually on the ball ?


seems like 901-907 still floating about back and forth?
 
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Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Messages
29,962
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Just a thought.

11600 is one of those frequencies that can be masked by installation anomalies, either the LNB or the cabling. I recall it being a bugbear of installations years ago on analogue reception, where CNN from Astra 1 could be covered in sparklies unless something was replaced, be it as simple as an f-plug at either end of the run.

On a DiSEqC system there is the additional internal motor circuitry (plus two other connections) that might be causing a poorer signal at this frequency.
 
Channel Hopper

Channel Hopper

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Staff member
Messages
29,962
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Will check with the analyser later today to see if I can recreate it here, but I recall 1750(MHz) as being the troublesome figure.
 
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Analoguesat

Analoguesat

Administrator
Staff member
Messages
48,092
Location
Scottish Borders
My Satellite Setup
TM 5402HD
Skybox F3
Sky+ UK.
My Location
Scottish Borders
Isnt 11600 one of the frequencies that can be affected by dect phones?
 
Channel Hopper

Channel Hopper

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Staff member
Messages
29,962
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
We don't have one of those, I do have some preliminary results though with the kit here, just running a second cable to bypass the HtoH to see if that is behind some of notches/noise in the spectrum.
 
satesco

satesco

Specialist Contributor
Messages
956
My Satellite Setup
seven antennas,one toroidal with 16 lnbs,
6 satellite receivers,2 Meters,9 PC cards(tbs6983,6903,6590,6504,6522,6209,2603,6909X,6903X,skystar hd2),2 tuners usb-tbs5927 & tbs5925,Skystar HD.
Satellite reception between 100.5E-50.0W
My Location
Romania
Besides the BBC package,whose signal we can check with standard receivers,because they use the usual parameters,the other active frequencies on this satellite are for data transmission.So you will need a device capable of detecting both the signal and the parameters used on these frequencies.And I ask then with what device do you check for anomalies in your reception system?
In case there are no signal problems at the BBC,then try a device that knows how to read the parameters(16/32APSK,mode ACM,etc) used for data transmission,such as most transponders used on this satellite.
That's what I'd do if I were you.It is true that I have a dvb card and applications that help me determine what problems I have at the reception,whether it's from your reception system(signal attenuation), or from interferences.
 
Channel Hopper

Channel Hopper

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Messages
29,962
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Ok. Preliminary checks suggest the frequency is affected by motor throughput and is increased by smaller reflectors (G/T). Pictures from the analyser in a moment
 
Channel Hopper

Channel Hopper

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Staff member
Messages
29,962
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
In each of the following tests all peripheral equipment has been switched off in the room, apart from the Satlook NIT analyser

OK, first up , imagery of the bands from a fixed 1m dish, connection directly to the LNB. As you can see there is nothing on the opposite polarity or upper band near the frequency of interest (which is white six dots up from the base of the screen)
 

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Channel Hopper

Channel Hopper

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Staff member
Messages
29,962
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Next, same dish but this time the analyser takes the incoming signal through the HtoH actuator (in this case an Alsat device)

(The three other quadrants of the universal LNB only)

Spot the small notch of 'signal' near the required frequency
 

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Channel Hopper

Channel Hopper

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Staff member
Messages
29,962
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Lastly another installation on the roof, this time an 80cm reflector on a similar H to H motor. Again the analyser is receiving signal from the LNB through the motor connections. I will double check the analyser imagery for the fourth polarity tomorrow as it is now getting late but you should be able to see the noise from the circuitry within the gearbox is - almost certainly - generating a peak at a single frequency down the incoming cable to the room.
 

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antrabe

Member
Messages
127
My Satellite Setup
dreambox7080
My Location
spain
something change on tp11495V?
 
william-1

william-1

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Staff member
Messages
9,713
Location
Epping Forest
My Satellite Setup
OP Gibertini 100 XP+ Inverto Black Ultra 0.2
Superior Dark Motor (160° max)
(50 east to 34.5 west)
TM6902HD (A/B switch) Octagon SX88+Optima

Raven 88cm Mesh Dish + TM-1 0.1
Stab100 H to H (120° max)
(53 east to 45 west)
Octagon SX88+ (A/B switch) Edision S2

45cm dish V8 Golden 28E FreeSat Quad Lnb
Virgin Media FreeSat
My Location
Epping Forest Essex
John777

John777

Member
Messages
52
My Satellite Setup
Icecrypte
My Location
Uk
I can see that why is does it keep swapping place 901-907
 
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