Astra 1N tests - latest chat

[Analoguesat]

the next astra 2e,2f,2g will be uk beam like astra 1n ?

Yup very much like 1N.

 

[satelliteman]

the next astra 2e,2f,2g will be uk beam like astra 1n ?

Yes but more than likely a narrower beam. Exactly how; we will have to wait.

 

[welshman234]

A really interesting documentary, the expertise that goes in to manufacturing is somewhat amazing. Whilst I appreciate they simplified terms for everyone non-technical to understand it would be interesting to have seen the various hardware stages in uplink Rx through to IF transposition and then amplification and re-transmission.

Maybe if someone's got a PC card and can do HD screen grabs of some of the shots they could be posted in a seperate thread?

That Antenna Engineer responsible for antenna design will be the one to ask about spotbeams! He'll already know exactly what the UK spotbeam on 2E, 2F and 2G will look like!

Yes wasn`t his name Mr De`Ath (really!!!!)... little does he realise he has the power of life and death over ex pat viewing.

 

[yan75]

the next astra 2e,2f,2g will be uk beam like astra 1n ?

Solly, I would suggest prepare for the worst! If it doesn't materialise then its a bonus for us, although it looks highly unlikely there will be a bonus! I asked the question last week sometime and was told we will still have some widebeam access which will more than likely be paid for services. Better than nothing and you can supplement with some ipTV.

There will always be a workaround one way or another! You may just have to receive some of your viewing in ways other than a dish!

 

[Huevos]

isnt it the same?, beyond my knowledge of satilletes

No, it's not the same. The satellite is at 28E, that is the orbital slot. Elevation is the angle the above the horizon that the receiving dish points towards. Elevation changes based on your location. Elevation for London is 25º, whereas for me here it is 36º, and 29º is a south-west/north-east stripe somewhere between the two (see the map).

 

[Huevos]

Yes wasn`t his name Mr De`ath (really!!!!)... little does he realise he has the power of life and death over ex pat viewing.

Well one thing is for sure, Dr Death is not trying to get fired. His job is to make sure the coverage area is fully illuminated to the correct EIRP, and not that the non-coverage area is not illuminated. And seeing as he is dealing with a 100 million GBP asset I'm sure he is going to err on the side of caution, rather than let the satellite owner find out at a later stage that everyone in Scotland needs a bigger dish.

 

[welshman234]

Did anybody notice that Mr De`Ath said that they try and suppress unwanted power over the sea and even the smallest manipulation of the reflector surface by10s of millimeters can have a subtle afffect on thebeam shape. Beam technology shaping has moved on... What this tells me is that they will try and avoid too much spillage in the sea North of Scotland and West Of Ireland.

 

[radioagogo]

what sort of meter have you got ,can it tell what is what or is it just signal

Hi again Thortenerife, sorry didn't post sooner, think I've got goat flu. Meter is nothing fancy, got it from Kong Hong, it's a CY70358 officially called a Satfinder monitor. If I remember rightly it cost 85€ including postage. It has a 3.5" lcd screen, reads signal strength and quality and BER and some other things I haven't fathomed out yet, It's all in Chineese. Very good tuner, equally as good as the openbox, which is the best i've come across on a cheapie so far. It isn't a spectrum analyzer but does the job and you can watch telly too.

 

[radioagogo]

Thanks for that radioagogo. C4 was pixellating until around mid-day. Nothing now.

Very interesting Milestone 11, perhaps we should meet. What LNB are you using?

 

[Analoguesat]

Well one thing is for sure, Dr Death is not trying to get fired. His job is to make sure the coverage area is fully illuminated to the correct EIRP, and not that the non-coverage area is not illuminated. And seeing as he is dealing with a 100 million GBP asset I'm sure he is going to err on the side of caution, rather than let the satellite owner find out at a later stage that everyone in Scotland needs a bigger dish.

Put enough power down over Scotland and we might be able to grow tomatoes outside in the "summer"

 

[PaulR]

Put enough power down over Scotland and we might be able to grow tomatoes outside in the "summer"

That would be the Death Star satellite then.

 

[radioagogo]

what sort of meter have you got ,can it tell what is what or is it just signal

Hi Again, Sorry for the delay in reply, think I have Goat flu. The meter is nothing special, just a cheapie from Kong Hong. Officially it's a Satfinder/Monitor CY70358 only cost me €85, reads frequency, signal strength and quality in % and BER and some other things I haven't fathomed out yet, it's in Chineese. It's not a spectrum analyzer but it is perfectly adequate for my needs. Runs for 4 hours on a charge, has a 3.5" LCD display so you can see what's going on. Tuner is very sensitive as good as my Openbox which is the best I've come across so far for weak sat watching. Hope that's of some use. Sorry if this post appears twice, didn't seem to go first time

 

[Dan Dan]

sorry just cant find correct thread...
BBC SPORT 11.954H - other channels on SKY box CHANGE LANG. TO WELSH

 

[milestone 11]

Very interesting Milestone 11, perhaps we should meet. What LNB are you using?

Radioagogo, you are now entering realms of which I know nothing. I won't prove my total ignorance of the subject by saying it's grey with a white cap. I will however prove that I'm capable of looking for something on the internet. Below is make and spec:

LNBTW02BOS+ BOSHMANN Universal Twin LNB, Noise Figure 0.2 dB

La más amplia gama de LNBs del mercado.
Figura de ruido de 0.2 dB garantizado por estrictos controles de calidad.


Type Offset
Outputs 2
Output Nº 1 All
Output Nº 2 All
Output Nº 3 /
Output Nº 4 /
Input Frequency (Low Band) GHz 10.7 - 11.70
Input Frequency (High Band) GHz 11.7 - 12.75
Output Frequency (Low Band) MHz 950 - 1950
Output Frequency (High Band) MHz 1100 - 2150
Input Signal Level dBm /
Noise Figure dB 0.2
Gain dB 53 (Min.) - 63 (Max.)
Gain Variation dB /
Gain Linearity dB <0.5 / 26 MHz
L.O. Frequency (Low Band) GHz 9.75
L.O. Frequency (High Band) GHz 10.6
L.O. Phase Noise @1 kHz dBc/Hz -50
L.O. Phase Noise @10 kHz dBc/Hz -75
L.O. Phase Noise @100 kHz dBc/Hz -95
L.O. Stability MHz ±1 MHz @25ºC Low B. / ±2 MHz @-40ºC/+60ºC High B.
Consumption mA 220 (Max.)
Image Rejection dB >40
Cross Polar Isolation dB 25 (Typ.)
Output Impedance Ω /
Return Loss dB /
Operational Temperature ºC -40 / +60
Vertical High Control Signal 14.0 V & 22 kHz ±4 kHz
Vertical Low Control Signal 10.5 - 14.0 V & 0 kHz
Horizontal High Control Signal 16.0 - 20.0 V & 22 kHz ±4 kHz
Horizontal Low Control Signal 16.0 - 20.0 V & 0 kHz

Whether these numbers prove that it's good, bad or indifferent is waaaaay beyond my knowledge of such things. Now, if it had wheels...

 

[satesco]

How About: "Astra 1N - The Facts" !!

New transponder started:
Feed: Data
Channel Name:651
Channel Data:11185 V,sr.21666,3/5
Typ: Dvb-S2/8psk
Coding Mode:ACM
Sat Name:Astra 1N
Pos: 28.2 E
Date: 28.10.2011
Time: 20:30 GMT
S/N:15.1 dB
Beaman-European

 

[Huevos]

Channel Data:11185 V,sr.21666,3/5

Just appears as an unmodulated carrier for me.

 

[Llew]

That's using ACM coding. I get it on the TBS 6925, which can resolve those streams.

 

[andrewcrawford]

ive gota signal on it but it not locking i think i have the symbol rate wrong i have set it at 21666

 

[Analoguesat]

ive gota signal on it but it not locking i think i have the symbol rate wrong i have set it at 21666

Its ACM modulation - most kit wont resolve it

 

[andrewcrawford]

what is a acm modulation then?? i assume qbox wont do it but i aint scanning just trying to use satfinder to confirma singal the agc is flicking which is usually what happens when it detects a signal but cant get a snr if therre nothing it sits at 56% consant no moving it happen with one of the other transponders when they whre litting up but not fully lit up