RTE commence broadcasting free to air on satellite at 9e on KA band

givecredit · 26-05-2011 08:45AM #1

As the title says, saorsat has begun testing.

20185 L dvbs2

More details here:

20185 L

Saorsat
DVB-S2 25000-1/2
QPSK
8564-1001
1.0

110519

RTÉ One tests MPEG-4 1101 1101 1201 E

RTÉ Two tests MPEG-4/HD 1102 1102 1202 E

RTÉ News Now MPEG-4 1105 1105 1205 E

RTÉ Radio 1 1226 1226 E

RTÉ Radio 2 FM 1227 1227 E

RTÉ Lyric FM 1228 1228 E

RTÉ Raidió na Gaeltachta 1229 1229 Ir

RTÉ Radio 1 Extra 1230 1230 E

RTÉ Pulse 1231 1231 E

RTÉ 2XM 1232 1232 E

RTÉ Choice 1233 1233 E

RTÉ Gold 1234 1234 E

RTÉ Chill
1235 1235 E

RTÉ Junior 1235 1235 E

Eutelsat Ka-Sat © Lyngemark Satellite, last updated 2011-05-20 - http://www.lyngsat.com/eka.html

bk · 26-05-2011 09:00AM

Interesting no TV3 or 3e.

watty · 26-05-2011 09:21AM

Because it's only tests. Note the SR is 25,000 FEC 1/2

alfreg · 26-05-2011 09:44AM

Can this be received in London, What gear would I need?

Apogee · 26-05-2011 09:45AM

I'll post the rest of the pics in the 'Saorsat' sticky thread...

watty · 26-05-2011 09:56AM

alfreg wrote: »

Can this be received in London, What gear would I need?

today maybe, with a 1.8m dish (guess, could be bigger) and Left hand circular Polarised Ka-Band LNBF.

But later when there are French Internet services it's very very unlikely.

http://www.techtir.ie/saortv/saorsat-coverage

This is WHY RTE can use Ka-Sat and not 28E for FTA tv.

Rick_ · 26-05-2011 11:13AM

What about in the north? I am in the process of getting a new dish installed for Freesat on 28.2E but I wonder if it might be worth sticking another dish up for 9E and get RTÉ FTA as well.

watty · 26-05-2011 11:52AM

One 90/95cm Triax like down the page here should do:

http://www.saortv.info/satellite-saorsat/saorsat-reception/

kuro_man · 26-05-2011 01:01PM

I have a 80cm dish pointed @ 5w, could I add an LNB to this - my terrestrial reception is poor.

watty · 26-05-2011 01:18PM

9E to 5W is 14 degrees... Limit is about 20

You need though to realign to 5E or 1W. So the 80cm may not be big enough as you may loose too much 5W signal. Depends how strong your 5W is.

Leaving it at 5W may make the 9E offset too weak. But we don't know yet what the levels are.

If you wait a couple of months the suitable Ka-Band LNBFs should be available cheaply. I can't say more.

So in theory it may be possible.

Also your model of dish needs a stout LNB arm and a suitable Offset bracket. Triax have suitable dishes and brackets.

liamtech · 26-05-2011 02:03PM

I think i know the answer to this question - but il ask anyway - what type of LNB is required and where can we get one... its obviously a different type to a standard Universal LNB - Also my apologies if this has been addressed elsewhere but what polarization is "L"?

watty · 26-05-2011 02:28PM

Circular comes in Left Hand or Right hand. You can of course get switchable ones. But each Ka-Sat spot is only one polarisation.
( I forget which is clockwise etc RH = Clockwise probably)

There will be plenteous supply of suitable Ka-band LNBFs by the time the service is "official". Seriously don't rush!

The general belief was that although DirecTV and Hylas are Circular polarisation that Ka-Sat would be Plane Polarisation as the Tooway on Ka Band on HB6 is. No-one actually said so.

It's obviously circular (L or R depending on spot) rather than Plane (H or V depending on spot).

Pretty pictures http://en.wikipedia.org/wiki/Circular_polarisation

rlogue · 26-05-2011 02:48PM

watty wrote: »

There will be plenteous supply of suitable Ka-band LNBFs by the time the service is "official". Seriously don't rush!

Watty, the majority of us are enthusiasts - of course we're going to rush!

liamtech · 26-05-2011 03:02PM

i might get one just to mess around with it on my spare HD Satellite box, which is currently going to waste - any links to KA LNB's would be greatly appreciated!

lawhec · 26-05-2011 03:52PM

watty wrote: »

Because it's only tests. Note the SR is 25,000 FEC 1/2

Net bit rate of 24.721 Mbps.

The Cush · 26-05-2011 04:03PM

lawhec wrote: »

Net bit rate of 24.721 Mbps.

About 1 DTT Mux worth.

chputney · 26-05-2011 04:32PM

I use a Tooway LNB that I bought from eBay. It is a VSAT LNB which requires and External 30V supply and the LO GHz. It is not standard mounting.

watty · 26-05-2011 04:38PM

rlogue wrote: »

Watty, the majority of us are enthusiasts - of course we're going to rush!

yes, well I made a little email myself ...

But for people that actually watch the program content rather than the BER graphs there will be LNBFs

watty · 26-05-2011 04:40PM

chputney wrote: »

I use a Tooway LNB that I bought from eBay. It is a VSAT LNB which requires and External 30V supply and the LO GHz. It is not standard mounting.

That's a complete ODU with a transmitter. You only need the receiver part (LNB not the BUC).

Fried eyeballs.

Apogee · 26-05-2011 04:46PM

@chputney - How did you find the frequency/parameters? Did you use a blindscanner? I put a posting on the Yahoo Feedhunters site a bit over a month ago but nobody reported back anything.

dbcool · 26-05-2011 05:17PM

watty wrote: »

That's a complete ODU with a transmitter. You only need the receiver part (LNB not the BUC).

Fried eyeballs.

yeas thats the same lnb i have and i am trying to mount it on a td110 - its massive! are you tell me that i can open it up - carve out the lnb and basically sellotape it to my ordinary lnb like you have in your set up pictures?

this will make life a lot easier!

Apogee · 26-05-2011 05:26PM

dbcool wrote: »

yeas thats the same lnb i have and i am trying to mount it on a td110 - its massive! are you tell me that i can open it up - carve out the lnb and basically sellotape it to my ordinary lnb like you have in your set up pictures?

No, the Too-way unit is integrated unfortunately.

chputney · 26-05-2011 05:51PM

The power is 24V to 30V DC into the Tx F connector. The LO of the Rx LNB is 21.2 GHz so the spectrum is inverted. The RTE signal is at 1015MHz. (21200 - 20185 = 1015) The Transmit and receive are integrated so don't take it apart. You will have to make some sort of adapter to mount it. Use a Ku LNB first to make sure you are pointing at 9E and then switch to the Ka. The transmitter is disabled without a tone on the transmit F connector (but don't stay in the area in front just in case)

The LNB spec is here http://www.viasat.com/files/assets/web/datasheets/3Watt_Ka-Band_Transceiver_102_lores.pdf

Stinicker · 26-05-2011 05:58PM

Does any one know if any of the KA Band LNBs available from the United States that are used for the Dish Network and DirecTV would work with SaorSat? I have a one Metre Satellite Dish and Technomate HD receiver etc.

Most critically my Saorview reception is not reliable enough and I am one of the 2% who will be Saorsat dependent.

mcwhirter · 26-05-2011 06:29PM

Are there for sale lnb's that receive ku and ka band for a motorised dish setup with one lnb.

watty · 26-05-2011 06:39PM

No
It's been "home brewed" for C/Ku band badly by putting a Ku LNBF waveguide (a 3/4" copper pipe) inside a C Band LNB and connecting a Ku LNB-F at rear. Reduces gain of the C-band a lot.

You'd need a mechanical change-over adaptor.

The waveguide for ku is about 19mm and I think for Ka about 11mm

Also most but not all Ku is Linear polarisation. Ka-Sat and Hylas are Circular, but HB6 Ka-Band is Linear.

chputney · 26-05-2011 07:09PM

There will be a Ka Circular LNB available later this year just for users who don't want to have satellite broadband as well.

As for the US LNBs that have Ka capability, there are a number of problems here. The mounting is different and the LNBs have multiple units. For DirecTV there is SL3 and SL5 which have 3 and 5 LNBs. The 5 LNBs are a power hog and a typical receiver cannot support this. The SL3 is specifically for 99W and 103W and the LNB has internal frequency conversion which I believe is too low. The US Ka for DirecTV is 18.3GHz to 19.8GHz.

If you want to actually watch TV, then my advice is hang on for a few months until the Irish standard Ka LNBs are available.

tmcw · 26-05-2011 07:20PM

chputney wrote: »

....If you want to actually watch TV, then my advice is hang on for a few months until the Irish standard Ka LNBs are available.

A few months! But I want one now!!

ISAA · 26-05-2011 08:11PM

All,

Did a few tests today,
74cm dish :
KA band L.N.B :
Freguson averia decoder :

no feed horn, just straight waveguide flange.

Excellent pictures :

No need for a extra PSU.used standard voltage from rx, and showed up on spectrum, no problem.

Apogee · 26-05-2011 08:55PM

tmcw wrote: »

A few months! But I want one now!!

If you're really desperate, you could get a Wildblue TRIA (Transmit Receive Integrated Assembly) - it's essentially the same thing as the Too-way device by CHPutney above. Make sure it's LEFT or LHCP. Be aware that it weights a bloody ton and requires 24-30v PSU to operate.

Ebay.com rather than ebay.ie
http://shop.ebay.com/i.html?_nkw=wildblue+tria&_sacat=0&_odkw=wildblue&_osacat=0&_trksid=p3286.c0.m270.l1313

I picked one up for about $30.

watty · 26-05-2011 10:36PM

chputney wrote: »

There will be a Ka Circular LNB available later this year just for users who don't want to have satellite broadband as well.

As for the US LNBs that have Ka capability, there are a number of problems here. The mounting is different and the LNBs have multiple units. For DirecTV there is SL3 and SL5 which have 3 and 5 LNBs. The 5 LNBs are a power hog and a typical receiver cannot support this. The SL3 is specifically for 99W and 103W and the LNB has internal frequency conversion which I believe is too low. The US Ka for DirecTV is 18.3GHz to 19.8GHz.

If you want to actually watch TV, then my advice is hang on for a few months until the Irish standard Ka LNBs are available.

Agreed. The DirecTV stuff is no use at all.

Also there are four bands of Ka LNBs for sale!
you need 19.2 to 20.2 model Or similar as Saorsat is 20.185

RTE commence broadcasting free to air on satellite at 9e on KA band

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