Saorview/Freesat Using same loft wiring

Ten Pin · 07-06-2021 10:27PM

http://www.satcure.co.uk/tech/SkyQ.htm

Spn744 · 07-06-2021 11:35PM

Ten Pin wrote: »

http://www.satcure.co.uk/tech/SkyQ.htm

Very helpful thank you. So from what I’m reading if I change the LNB to the older sky hd version I would still need to replace the wiring from the satellite to the tv or is it all the same? (Sorry if it’s a stupid question)

Spn744 · 07-06-2021 11:37PM

Elvis Hammond wrote: »

I wonder was this purely for installer convenience or is it providing a good healthy signal. If it's the former, then poor signal could be at the root of the problem, & it could still be troublesome even if changing the LNB helps out interference-wise.

I think it was definitely convenience as the satellite is on a pipe that had space for the aerial outside but he decided to put it in the loft. Thank you for the help, will call the satellite company tomorrow to see what they say

The Cush · 08-06-2021 12:20AM

Spn744 wrote: »

So from what I’m reading if I change the LNB to the older sky hd version I would still need to replace the wiring from the satellite to the tv or is it all the same? (Sorry if it’s a stupid question)

Glaceon's posts are 100% correct here, you cannot combine a SkyQ wideband LNB feed with a terrestrial feed via a diplexer, this has been posted about here and elsewhere since the launch of SkyQ.

You say you're replacing the SkyQ box with an Arris Freesat box, if you connect the SkyQ wideband LNB directly to the Freesat box you can avail of 4 tuners for recording but only 2 tuners if you connect a legacy LNB.

Best option is to run a separate cable from the aerial for the Saorview channels.

Elvis Hammond · 08-06-2021 12:53AM

The Cush wrote: »

Glaceon's posts are 100% correct here, you cannot combine a SkyQ wideband LNB feed with a terrestrial feed via a diplexer, this has been posted about here and elsewhere since the launch of SkyQ.

I mentioned in my 2nd reply that these diplexers aren't compatible with wideband LNBs, a good half hour before Glaceon chimed in.

Plus, I seem to be the only one who attempted to address the actual issue raised in the OP; Saorview failure when the Sky box is switched on. Presumably the missing satellite channels hadn't been noticed.

So enough with the backslapping ...

The Cush · 08-06-2021 12:56AM

Regarding the Arris Freesat box, can anyone confirm if this box is dSCR compatible?

I haven't really followed it much since launch but the original manual says it had legacy, wideband and MDU LNB options, I assume MDU (Multi Dwelling Units) refers to SCR or Sky's propriety dSCR, i.e. single cable capable of carrying both SkyQ and terrestrial feeds down a single cable.

If so there are wideband LNB compatible multiswitches available, outputs legacy or dSCR sat feed combined with terrestrial feed to a TV via a single cable, e.g. https://whytetechnologies.com/products/wscr504

Update: according to this post the Arris box appears to be single-cable SCR compatible - https://www.satellites.co.uk/forums/threads/single-cable-carrying-two-inputs-with-splitter-works-with-sky-but-only-half-freesat-channels-on-new-freesat-4k-pvr.177716/

Elvis Hammond · 08-06-2021 12:58AM

Spn744 wrote: »

I think it was definitely convenience as the satellite is on a pipe that had space for the aerial outside but he decided to put it in the loft.

Aerial mounted along with the dish would also tend to be done for convenience too (usually higher would be better for the aerial), & in some cases mightn't suit at all, depending on transmitter direction.

The Cush · 08-06-2021 01:03AM

Elvis Hammond wrote: »

Plus, I seem to be the only one who attempted to address the actual issue raised in the OP; Saorview failure when the Sky box is switched on. Presumably the missing satellite channels hadn't been noticed.

Can't see the issue here, when the satellite receiver is switched on the wbLNB IF frequency range that is co-channel with the the terrestrial frequency range kills Saorview down terrestrial leg of the diplexer.

I've gone back over the OP's posts but I can't see where he says he's missing the satellite channels, just the terrestrial ones in the first post?

Elvis Hammond · 08-06-2021 01:08AM

The Cush wrote: »

Can't see the issue here, when the satellite receiver is switched on the wbLNB IF frequency range that is co-channel with the the terrestrial frequency range kills Saorview down terrestrial leg of the diplexer.

So whatever filtering is in the diplexer satellite leg doesn't keep out enough of the signal below 950 MHz?

The Cush · 08-06-2021 01:14AM

Question for the OP, when was this diplexer fitted and are you missing satellite channels?

Spn744 · 08-06-2021 02:01AM

The Cush wrote: »

Question for the OP, when was this diplexer fitted and are you missing satellite channels?

The splitter was installed on Friday before the bank holiday weekend.

The only channels that I am missing (this was a problem before the aerial was fitted due to a tree blocking the satellite) is gold, W and ITV HD/ITV 2 (manually tuned) all others seem good!

Planning to cut down branches off a tree in the coming months which hopefully should resolve this as it was fixed by sky after raising the dish higher but problem reoccurred.

Should have the 4K box by Wednesday so I’ll install that and get the LNB replaced and hopefully the issue is resolved with the Saorview disconnection

thanks for the reply!

The Cush · 08-06-2021 02:11AM

Spn744 wrote: »

The splitter was installed on Friday before the bank holiday weekend.

The only channels that I am missing (this was a problem before the aerial was fitted due to a tree blocking the satellite) is gold, W and ITV HD/ITV 2 (manually tuned) all others seem good!

Thanks for the update, I assume with the splitter now installed more of the satellite channels have disappeared as would be expected due to the filtering of the splitter?

Spn744 wrote: »

Should have the 4K box by Wednesday so I’ll install that and get the LNB replaced and hopefully the issue is resolved with the Saorview disconnection thanks for the reply!

Just to repeat, with a legacy LNB you remove the option to record 4 channels simultaneously or record 3/ watch 1.

See page 14 of the manual - https://storage.googleapis.com/freesat-production-assets/box/files/PVR2020v38manual.pdf.pdf

BTW, can you link to the box purchased?

The Cush · 08-06-2021 02:17AM

Just 1 further question, something that occurred to me, wbLNB feeds require 2 cables to the SkyQ box, I assume this was for your setup also and you have split one of these cables with the splitter?

icdg · 08-06-2021 09:25AM

Theres a couple of posts on this thread that appear to be snarking at each other. I’m not calling out particular people or issuing warnings but it seems to me that someone who was only trying to help left the thread over it. Can I ask everyone to be civil please

Spn744 · 10-06-2021 04:53PM

Just to update on here. All splitters were removed today and an aerial wire was ran on the outside of the house separately to the tv so problem has been fixed :-) thank you for everybody’s help on here!

Saorview/Freesat Using same loft wiring

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