can't get Signal to show on ex-sky satellite dish

Forums › Freeview (DVB-T/DVB-S) › can't get Signal to show on ex-sky satellite dish

Eitsop

584 posts

Ultimate Geek
+1 received by user: 153

ID Verified

#301969 19-Oct-2022 19:55

Hi have setup many various satellite decoders in past..

and I am trying to setup a decoder on a dish that previously had Sky on it in last few days.. it is a 10750 dual/quad type LNB

But I can't get any signal coming through from dish? I use same settings at another house.. and works fine?

What is wrong with my settings?

1 | 2

4999 posts

Uber Geek
+1 received by user: 462

Moderator

Trusted

Lifetime subscriber

#2984865 19-Oct-2022 20:00

Identical to my setup except both increased voltage and force legacy are 'no'.

Eitsop

584 posts

Ultimate Geek
+1 received by user: 153

ID Verified

#2984866 19-Oct-2022 20:03

rscole86: Identical to my setup except both increased voltage and force legacy are 'no'.

I altered this.. no change

snnet

1413 posts

Uber Geek
+1 received by user: 556

#2984867 19-Oct-2022 20:06

You're sure it's meant to be set to 10750 and not 11300 for your area?

Do you have an option for transponder frequency? this should be 12483MHz

Eitsop

584 posts

Ultimate Geek
+1 received by user: 153

ID Verified

#2984868 19-Oct-2022 20:10

snnet: You're sure it's meant to be set to 10750 and not 11300 for your area?
Do you have an option for transponder frequency? this should be 12483MHz

Tried 11300 .. but the old Sky decoder was set on 10750. tried transponder frequency differences as well?

snnet

1413 posts

Uber Geek
+1 received by user: 556

#2984874 19-Oct-2022 20:15

Not 100% myself as I haven't had to input these before but can you change LOF/L to 12268 MHz, and LOF/H to 12735 MHz - maybe that will work? Do you have an option to select the type of LNB? Typically even though they're dual or quad, setting as single will work

fe31nz

1294 posts

Uber Geek
+1 received by user: 423

#2985035 19-Oct-2022 23:31

You normally do not want to have Sky LNBs switch to the upper local oscillator as they do not have one. They do have the tone sensor and LO selection circuit however, so selecting the upper LO causes there to be no signal as the LNB switches to the non-existent upper LO. So I would be setting the Threshold to 99999 (or the largest number it will let you set), so it will only ever use the lower local oscillator. I am not sure what the Tone Mode setting does - if it prevents ever sending a tone, then that should already be preventing the use of the upper LO, but if not, then try setting it to on when you have set the Threshold correctly.

Geekzone

Want to support Geekzone and browse the site without the ads? Subscribe to Geekzone now (monthly, annual and lifetime options).

Rickles

3107 posts

Uber Geek
+1 received by user: 445

Trusted

#2985178 20-Oct-2022 10:30

Mine is set as KU Band for LNB, and both L & H as 11300.

fearandloathing

537 posts

Ultimate Geek
+1 received by user: 206

ID Verified

Lifetime subscriber

#2985242 20-Oct-2022 11:36

Is it a power issue, I know my dish only works when powered by the sky box. Sky goes through a match master Satellite Multiswitch, currently I can only get a satellite signal if power by the sky stb, I can’t a satellite signal via the stb or the tv satellite tuner, if the dish is powered by the supplied match master power supply of by the tv.

trig42

5889 posts

Uber Geek
+1 received by user: 2094

ID Verified

#2985246 20-Oct-2022 11:38

fearandloathing: Is it a power issue, I know my dish only works when powered by the sky box. Sky goes through a match master Satellite Multiswitch, currently I can only get a satellite signal if power by the sky stb, I can’t a satellite signal via the stb or the tv satellite tuner, if the dish is powered by the supplied match master power supply of by the tv.

That's a point. There isn't a splitter in the line from the dish to the receiver?

Some splitters only pass power to the dish on one leg of the splitter so if the device isn't on that leg, the LNB gets no power if the powered leg has no device, or it's unplugged.

fearandloathing

537 posts

Ultimate Geek
+1 received by user: 206

ID Verified

Lifetime subscriber

#2985257 20-Oct-2022 12:14

In my case the multiswitch isn’t at fault, if the tv is plugged directly into the dish, with the tv supplying power to the dish, I do not get a signal.

RunningMan

9185 posts

Uber Geek
+1 received by user: 4835

#2985339 20-Oct-2022 14:44

fe31nz:

You normally do not want to have Sky LNBs switch to the upper local oscillator as they do not have one. They do have the tone sensor and LO selection circuit however, so selecting the upper LO causes there to be no signal as the LNB switches to the non-existent upper LO.

Those dual throat LNBs actually switch to the other throat (4 degrees out) if 22kHz is applied.

Mighty Ape

Shop now at Mighty Ape (affiliate link).

RunningMan

9185 posts

Uber Geek
+1 received by user: 4835

#2985340 20-Oct-2022 14:44

Rickles:

Mine is set as KU Band for LNB, and both L & H as 11300.

OP has a 10750 LNB though.

RunningMan

9185 posts

Uber Geek
+1 received by user: 4835

#2985341 20-Oct-2022 14:48

@Eitsop try setting the threshold to something artificailly high like 18000 ( higher than it will ever need to be), as some STBs will be triggering the 22kHz switch to select the upper LO (which will select the wrong throat on those Sky LNBs). Alos, increased voltage shouldn't be needed unless you have a very long cable run.

Judging by the screenshot, is that an Enigma2 based RX?

Rickles

3107 posts

Uber Geek
+1 received by user: 445

Trusted

#2985344 20-Oct-2022 14:56

>OP has a 10750 LNB though.<

That's true ... I had similar problems with the original dual-throat LNB so simply replaced it with one from DishTV ... only $20 or $30 and instant working.

Eitsop

584 posts

Ultimate Geek
+1 received by user: 153

ID Verified

#2985471 20-Oct-2022 18:30

I tried threshold at 18000 & 99999.. still no luck

The old receiver said "22khz Tone Use (lnb type) = Dual/quad"

1 | 2