nilesat 7w north midlands

[michael01707]

If you've got your dish set to get the strongest signal on the 7w verticals then you can check the high powered 8w European beam frequencies without moving the dish. If you can get the verticals and not horizontals then it would be the LNB.

 

[guest poster]

to be setting up on 7w and just happen to have an lnb that is nackered on the H polarity is.. really unlucky.


6pm to 9pm = 45 degrees?

btw .. you need to upload pictures on here.. quick process.


you in N Staffs?

 

[riproaring]

I'm the engineer concerned on RR's dish, I use a Rover analyser and can get all the Vertical channels no trouble whatsoever, When I change frequencies on the meter it still comes up with the same listings as on the transponder settings, but in order to get a signal at all on that setting, I have to turn the lnb 45 degrees (move it from 6 to 9, Having never installed a 2.4m dish, but doing IRS systems the only conclusion I can now come to is that the LNB is faulty and not receiving the Horizontal channels whatsoever, we are definately on the right bird as we get all the listings for ShowCinema.

hey up mister still pulling my hair out

 

[NeroAer]

Evening RR,

Attached is a photo of the dish we've put up.

Pedro, RR is going to contact the dealer tomorrow to try and get a new LNB sent out, I'll also try the other options when I next go back.

We are in Stoke mate

 

[NeroAer]

BTW ... what numbers on the tm do you get City 7s tp? (11862v)

RR, has just checked City 7 TP and it comes up with 86% strength and green on the quality with 58 - 62 %

 

[michael01707]

Is that fixed to the wall?!!!

 

[NeroAer]

Yes it is Michael, the back plate is massive, I have to say it was not me that fixed it there. But it is above a flat roof so RR has to be careful that he didn't damage the roof.

 

[guest poster]

RR, has just checked City 7 TP and it comes up with 86% strength and green on the quality with 58 - 62 %

I guessed 84% Q 75% S... but you can't really compare .. but that does indicate lower quality / snr .. than you'd expect?

I was 10 minutes away this afternoon .. could have let you check it with another c120 (or box of lnbfs) ...

we do steel work if you get any problems with that wall mount...

 

[michael01707]

Wow, I can see how big the plate is! My 1.8m is really heavy so I can imagine the weight of a 2.4m. I personally opted to put mine on a non penetrating roof mount. I've added a picture. I need to add some patio slabs to mine soon before the strong winter gales come.

 

[satelliteman]

to be setting up on 7w and just happen to have an lnb that is nackered on the H polarity is.. really unlucky

That is a bit of bad luck too. Can be quite confusing on site but turning the LNb as said 90º and changing the polor on meter will show you the H results

 

[NeroAer]

SM, when I skewed the LNB, the signal came up on the Horizontal channels, Not sure whether you are conversant with a Rover st4, but when I then checked the Mpeg settings which gives you a list of the channels on that TP, it was exactly the same as T16 which is a Vertical TP. This is why I am pretty confident it is the LNB.

 

[BoSSpak]

Wooow !!! thats some risk you taking having it fixed to the wall. I just hope that doesn't pull the wall off during high winds!.Plate or no plate m8, andrews 2.4m dish is bloody darn heavy.

 

[rolfw]

I would perhaps consider putting an acroprop underneath it and guy wires to both sides from the mast.

 

[CROSSBONES]

Yes the 1.8m is heavy enough, I would be very concerned with a dish of that weight, and its over the flat roof!

 

[satelliteman]

SM, when I skewed the LNB, the signal came up on the Horizontal channels, Not sure whether you are conversant with a Rover st4, but when I then checked the Mpeg settings which gives you a list of the channels on that TP, it was exactly the same as T16 which is a Vertical TP. This is why I am pretty confident it is the LNB.

I have and use a Rover ST-4 daily.
You can switch V & H by holding down the 'barscan' button for more than 2 seconds. Change to H whilst still on Tp 15. Go back to trace screen and you should see just noise if the LNb is at fault.

 

[guest poster]

SM, when I skewed the LNB, the signal came up on the Horizontal channels, Not sure whether you are conversant with a Rover st4, but when I then checked the Mpeg settings which gives you a list of the channels on that TP, it was exactly the same as T16 which is a Vertical TP. This is why I am pretty confident it is the LNB.

have you tried it without the meter .. just on the tm's on screen meters and do the h to v swap on 11919h?

 

[Robbo]

I think a better way to test the LNB would be to go for a VERTICAL transponder, like 11862V for example. Then rotate the LNB 90º, and change the V to H in the tuner.

Either that or stick the LNB on the nearby minidish.


As at this point, we don't know that the dish and LNB combination and alignment are good enough for the horizontal transponders.

 

[charly20]

I just wanted to share my experience with Nilesat here in Belgium, near Brussels.

I started with a 180cm PFA Jonsa. I got good results with the vertical transponders, but weak signals on the horizontal ones.

Then I bought a 150cm Gibertini, thinking it might outperform the 180cm Jonsa, due to better build quality. Well, reception with the Gibertini was weaker than with the Jonsa...

Then I bought a 240cm PFA from Aerial Oy (Finland). There I got excellent results with very strong reception on the horizontal transponders.

Then, at the end of August, I had the chance to test Nilesat with a 110 Triax. Location: just 20km from the first location.

Results: better reception than the 150cm Gibertini and the 180cm Jonsa, even though receiver, lnb, multiswitch and cables were the same!!!

Conclusion: Nilesat really seems to have hotspots and coldspots with its out-of-footprint reception. Just 20km difference can make a big difference.

My results were posted in the German forum dxtv dot de, under the section "Extrem-DX > Inmarsat, Space-Station, SeeSat, Sat-Spionage". You will find there a map and all measurements.

 

[guest poster]

I just wanted to share my experience with Nilesat here in Belgium, near Brussels.

I started with a 180cm PFA Jonsa. I got good results with the vertical transponders, but weak signals on the horizontal ones.

Then I bought a 150cm Gibertini, thinking it might outperform the 180cm Jonsa, due to better build quality. Well, reception with the Gibertini was weaker than with the Jonsa...

Then I bought a 240cm PFA from Aerial Oy (Finland). There I got excellent results with very strong reception on the horizontal transponders.

Then, at the end of August, I had the chance to test Nilesat with a 110 Triax. Location: just 20km from the first location.

Results: better reception than the 150cm Gibertini and the 180cm Jonsa, even though receiver, lnb, multiswitch and cables were the same!!!

Conclusion: Nilesat really seems to have hotspots and coldspots with its out-of-footprint reception. Just 20km difference can make a big difference.

My results were posted in the German forum dxtv dot de, under the section "Extrem-DX > Inmarsat, Space-Station, SeeSat, Sat-Spionage". You will find there a map and all measurements.

Thanks for that excellent post there, 7w signal hotspots & coldspots are a major issue that make it difficult to predict .. local interference from a city can alter reception too.

... was that 20km nearer?

 

[charly20]

yes, I know it is crazy such differences in reception of Nilesat with such small difference in location.

Here is the map of the 2 locations, just out of Brussels. Green dot is the first location with the 240cm dish; red dot is the location with the 110cm Triax.

Of course, the 110cm does not get a as good reception as the 240cm, but netherless it outperforms the 180cm Jonsa and 150cm Gibertini just 20km away.

The second location with better results is just a bit further away from Brussels, with more green / nature around. Is this the case of the difference of reception, or simply an issue of hotspots and coldspots with out-of-footprint reception?

In any case, it is very hard to predict in advance the strength of reception with out-of-footprint reception. Only first hand experience pays off. And, yes, it can be costly to gain such experience.