Reception of channels with horizontal polarization works, vertical not

T

tom degetel

New Member
Messages
5
My Satellite Setup
Hellas 39
My Location
Belgium
Hi,

I have a new dish pointed corectly toward HELLAS2 (39E) but I can't receive ANY channel sent with vertical polarization. Channels with horizontal polarization works perfectly.
The signal strength shows 90% for all channels with horizontal polarization but 0 for all those with vertical polarization.
The LNB is universal and I have also tried to replace it by another one. Its rotation (skew) is correctly set, according to my location (24 degrees clockwise). I have tried to turn it to different positions all around 360 but no luck with reception of channels with vertical polarization.
Any idea what to do?

Thanks in advance
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
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28,011
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK South
What size dish are you using?

Can you get signals on both polarities from the nearby satellites (42 E ) ?
 
T

tom degetel

New Member
Messages
5
My Satellite Setup
Hellas 39
My Location
Belgium
What size dish are you using?

Can you get signals on both polarities from the nearby satellites (42 E ) ?
The dish is 90 cm. I haven't tried other satellites; I cannot move the dish because it has been fixed on the neighbour's roof.
 
M

Mickha

Super Moderator
Staff member
Messages
5,393
My Satellite Setup
1.2M Channel Master, 1224 motor, VU+ Duo 2
My Location
North West
Either your receiver isn't changing the polarity, or more likely the LNB is faulty.
Try your receiver on a different dish, and check you can get vertical polarity channels.
If your receiver is fine check the connections, and cable, then try the LNB on a different set up.
 
Trust1

Trust1

Specialist Contributor
Messages
846
My Satellite Setup
1.8 m CM at SMR 1224 + Elev. with 7 lnb changer Ku (lin - circ) - Ka (lin - circ) C (lin - circ)
My Location
Nijmegen Netherlands
Faulty lnb I dont think because it was changed by another one .
Maybe wrong lnb setting , should be "universal"
Or receiver is sending lnb voltage over 14 volt at Vertical mode
 
T

tom degetel

New Member
Messages
5
My Satellite Setup
Hellas 39
My Location
Belgium
LNB was changed, indeed.
The setting is correct, Universal LNB.
I checked the voltage, the receiver is sending 12,8V at all time.
Tried to put a little Sat finder device between the LNB and the receiver, at receiver side. It shows a proper signal at all time. When I switch to horizontal polarity, a led is shortly flashing and then it lights up, indicating the H polarity. When I switch to vertical polarity channels, the led is flashing every 3 seconds.
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Messages
28,011
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK South
Which receiver ?

Can you borrow another ?
 
T

tom degetel

New Member
Messages
5
My Satellite Setup
Hellas 39
My Location
Belgium
Faulty lnb I dont think because it was changed by another one .
Maybe wrong lnb setting , should be "universal"
Or receiver is sending lnb voltage over 14 volt at Vertical mode
The setting is correct, Universal LNB.
I checked the voltage, the receiver is sending 12,8V at all time.
 
T

tom degetel

New Member
Messages
5
My Satellite Setup
Hellas 39
My Location
Belgium
Which receiver ?

Can you borrow another ?
I took the receiver to my mom's apartment and mount it on her dish. It works perfectly there.
I wonder if the length of the cable has anything to do with this. It reaches 150 ft (45m). I've added an amplifier which boosts the signal to 99% on the horizontal channels but doesn't change anything on vertical ones.
 
scopus

scopus

Specialist Contributor
Messages
2,157
My Satellite Setup
Primesat/Famaval 1.8 PF C/ku/Ka, Octagon SX8HD1, SX88, Openbox S3 Mini HD-V8S Freesat V7 HD-V8 Finder, Amiko A4K Combo, Satlook Colour HD Spectrum, Sansui A909 Amp and BOSE Acoustimass speakers for the audio.
My Location
Staffs UK
LNB was changed, indeed.
The setting is correct, Universal LNB.
I checked the voltage, the receiver is sending 12,8V at all time.
Tried to put a little Sat finder device between the LNB and the receiver, at receiver side. It shows a proper signal at all time. When I switch to horizontal polarity, a led is shortly flashing and then it lights up, indicating the H polarity. When I switch to vertical polarity channels, the led is flashing every 3 seconds.
If the receiver is ending out 13V all the time even in Horizontal mode then it is faulty. It should switch to 18V when a Horizontal channel is selected.
 
A

a33

Specialised Contributor
Messages
524
My Satellite Setup
XSAT410
Rebox RE-9000
My Location
NL
I've added an amplifier which boosts the signal to 99% on the horizontal channels but doesn't change anything on vertical ones.
Maybe the amplifier is cause of the problem, then? Or was this just a test, and you didn't have it permanently?

Was the voltage still the same (12,8V) at your mom's appartment?

BTW: Tom started a parallel-thread here: Reception of channels with horizontal polarization works, vertical not
So to not do unneccesay work: check there also.

greetz,
A33
 
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