Loss Of Signal - Techwatch Support Forums: Digital & Satellite TV, FTA, Cable, Computers, Mobile Phones, Apple and General Tech Forums

lenwatts · 05-06-07, 09:05 PM

I seem to be encountering something of a problem with a new LNB that I have just fitted. Previously I was using a single output LNB on a 65Cm dish pointing at Astra 1KR 19 deg E and was receiving the full range of channels

The LNB that I have fitted has a dual output for two receivers, which I have connected up and seem to work on all channels except those on frequency 10832 where these channels are showing poor or no signal.

Any ideas anybody?

Thanks. Len.

bigtee · 05-06-07, 10:43 PM

The experts will probably come up with more likely causes but two possibilities somewhat;

a) need a very very marginal increase (say, the width of a coin) in the dish elevation

b) very marginal skew adjustment

BGonaSTICK · 06-06-07, 01:25 AM

Loss of a single frequency is often down to local interference. You can use the following thread as a guide on how to calculate the actual frequency at which you might be receiving such interference, and this might in turn give you a better clue as to what it might be.

http://www.satellitehelp.co.uk/forum...ic,1065.0.html

That's due to a DECT phone, but the are several possibilities.

Are there any cables run alongside your sat coax, or any obvious visual clues as to what could be causing it?

Transmission masts for example?

Was it a cheap LNB you fitted?

lenwatts · 06-06-07, 05:12 PM

The LNB that I purchased was a Fortec Star FSKU-2V at around £30.

The only cables that run parallel to the coax are two other coax cables from a terrestrial tv aerial and a radio aerial mounted in the loft.

From the comments received I feel it may be something to do with LNB skew or slight dish re-alignment as the new LNB is a bit heavier than the previous single output model, and may be pulling the dish down enough to cause some missalignment.

Thank you anyways for you help, it looks like another trip up to the chimney this weekend.

Very best regards. Len.

05-06-07, 09:05 PM	#1 (permalink)
lenwatts Junior Member Join Date: Aug 2006 Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	Loss Of Signal I seem to be encountering something of a problem with a new LNB that I have just fitted. Previously I was using a single output LNB on a 65Cm dish pointing at Astra 1KR 19 deg E and was receiving the full range of channels The LNB that I have fitted has a dual output for two receivers, which I have connected up and seem to work on all channels except those on frequency 10832 where these channels are showing poor or no signal. Any ideas anybody? Thanks. Len.

05-06-07, 10:43 PM	#2 (permalink)
bigtee Senior Member Join Date: Oct 2006 Location: Kent Posts: 570 Thanks: 13 Thanked 74 Times in 71 Posts	Re: Loss Of Signal The experts will probably come up with more likely causes but two possibilities somewhat; a) need a very very marginal increase (say, the width of a coin) in the dish elevation b) very marginal skew adjustment __________________ Raven 90 multi lnb 1w, 7, 9, 13, 16, 19 & 28e; 1m Orbital on SG 2100 5e-34w and Various Receivers

06-06-07, 01:25 AM	#3 (permalink)
BGonaSTICK Dodgy Geezer Join Date: Nov 2005 Location: Brighton Posts: 9,718 Thanks: 3 Thanked 166 Times in 60 Posts	Re: Loss Of Signal Loss of a single frequency is often down to local interference. You can use the following thread as a guide on how to calculate the actual frequency at which you might be receiving such interference, and this might in turn give you a better clue as to what it might be. http://www.satellitehelp.co.uk/forum...ic,1065.0.html That's due to a DECT phone, but the are several possibilities. Are there any cables run alongside your sat coax, or any obvious visual clues as to what could be causing it? Transmission masts for example? Was it a cheap LNB you fitted? __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W

06-06-07, 05:12 PM	#4 (permalink)
lenwatts Junior Member Join Date: Aug 2006 Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Loss Of Signal The LNB that I purchased was a Fortec Star FSKU-2V at around £30. The only cables that run parallel to the coax are two other coax cables from a terrestrial tv aerial and a radio aerial mounted in the loft. From the comments received I feel it may be something to do with LNB skew or slight dish re-alignment as the new LNB is a bit heavier than the previous single output model, and may be pulling the dish down enough to cause some missalignment. Thank you anyways for you help, it looks like another trip up to the chimney this weekend. Very best regards. Len.