Help Required Does this transponder exist on another satellite?

dankargo

dankargo

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Hi all, Over the past few months my 80cm dish has experienced a degraded signal on the above transponders on Thor 0.8w (nearly 10% loss - 65% SNR from about 73% this time last year). I was advised to check the same transponder on another satellite which would identify whether it was the LNB at fault but I can't seem to find the above transponders active on any other satellite.

I have checked general signal rates on other satellites and they appear to be fine.

Does anyone know another satellite apart from 0.8w that use the above transponders or ones close to it?

Many Thanks
 
Last edited:
Lazarus

Lazarus

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Plenty.

Try 10906 V on 28E, for example.

3MHz difference is insignificant, especially bearing in mind the TP has around 20 MHz bandwidth.
 
Analoguesat

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The 2 on 1W are DVB-S2 so try 10911V on 13E for a comparison - thats DVB-S2 as well.

Edit - as Lazarus says 10MHz either side isnt going to make any difference.
 
dankargo

dankargo

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Thanks Lazarus.

Just scanned the above and im getting 87% intensity / 86% signal rate which I'm happy with, so the good news is my LNB seems to be ok. Could the power have just been lowered on the Nordic 0.8w beam then? I tend to watch the SVT HD channels frequently but the drop in signal means there's now more chance of break up in bad weather
 
Lazarus

Lazarus

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Good point. Complete accuracy after a bottle and a half of wine cannot be guaranteed.
 
Analoguesat

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There is also the possibility something on a similar freq has been powered up on one of the adjacent birds that hasnt been reported yet. Like Badr 26E nails some of the 28E UK spotbeam freqs for distant expats
 
dankargo

dankargo

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Thanks Analoguesat - both of you have been a great help.

Just scanned Hotbird too. Getting 88% intensity, 80% quality which I'm also happy with.

I wonder if anyone else with an 80cm would be able to scan the TPs on 0.8w, which would confirm whether its the power or interference from another bird
 
Analoguesat

Analoguesat

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Cant help you here dk - just about everything west of 5E is behind trees. :(
 
Channel Hopper

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Hi all, Over the past few months my 80cm dish has experienced a degraded signal on the above transponders on Thor 0.8w (nearly 10% loss - 65% SNR from about 73% this time last year). I was advised to check the same transponder on another satellite which would identify whether it was the LNB at fault but I can't seem to find the above transponders active on any other satellite.

I have checked general signal rates on other satellites and they appear to be fine.
Since you are on a bit of a small dish, things like skew setting, focal point and the general bore sight of the system are critical. Has the dish suffered a knock, are there any bushes creeping nearby, does the reflector need a clean?
You might even find there is some dirt on the horn cap, moisture , or a loose connector on the cable, all of which need a trip up the ladder
 
rolfw

rolfw

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Just had a look at that transponder, a little lower than some nearby ones, but solid.
 
dankargo

dankargo

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Thank you all.

I think my dish may have moved a small tad. I just thought I'd try editing the satellite position from 0.8w to 1w and that has improved things, not just on that transponder either, I'm now seeing almost a 5% increase from other channels on that bird.

Odd though as signal rates have not dropped off on other satellites.
 
Lazarus

Lazarus

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Probably because many of them are so strong that there is some margin above the AGC level, so it would take an appreciable real drop before the Receiver's metering would acknowledge that.

For weaker Birds and/or weaker TPs, the rather crude metering of most boxes would react in real-time, as it were.
 
K

Karl Wills

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Hi there,

I am located in Surrey. I have a 1m dish. Which is easier to get Arabsat 20E or Badr 26E?

Regards,

Karl
 
Analoguesat

Analoguesat

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Arabsat 20E is C-band so needs a reasonable sized dish.

You will get 26E Badr-4 frequencies without too much trouble, Badr's 5 -7 you may well struggle with.

What in particular are you looking for?
 
K

Karl Wills

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Mainly, I am trying to understand which satellite band needs a bigger dish size, can't find a guide which would let me know the answer.
Also, I am trying to watch football matches from the Middle East.
 
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Mickha

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Check lyngsat.com, or other satellite sites, and check the beam maps, for the satellite foot prints, which give you a rough guide, as to the size of dish required, for various satellites, e.g.
Code:
http://www.lyngsat.com/Badr-4.html
Code:
http://www.lyngsat-maps.com/footprints/Badr-4-BSS.html
Code:
http://www.lyngsat.com/Badr-5.html
Code:
http://www.lyngsat-maps.com/footprints/Badr-5-MENA-FSS.html
 
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