Reception of channels with horizontal polarization works, vertical not

[tom degetel]

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]

What size dish are you using?

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

 

[tom degetel]

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.

 

[Mickha]

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.

 

[Trust]

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

 

[tom degetel]

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]

Which receiver ?

Can you borrow another ?

 

[tom degetel]

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.

 

[tom degetel]

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]

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.

 

[a33]

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