Newsnet on Ka Band A

[tony smith]

[Hi
Yes its high today ok, each square on the graticule is 2 dBm so running 12/13 dBm see other carrier thats doing about 8dBm18.49xxGhz

 

[tony smith]

Hi
Very interesting 30 mins later Newsnet is off, giving it a tweek ?????????
Just a comms carriers and Boarder TV (Boris) up, Arrr as I write its back up just as strong in level

 

[John]

A record for me 18.1dB on NewsnetView attachment 90148

WOW .... dare not raise my installation up as there still is a fair bit of wind blowing with the occasional strong gust that seems to come out of know where.

 

[Archive-8]

Finally got some life out of the hughesnet lnb :-) it's not a good signal but it's a start.



I guess the dish has bent, or the N.P.R.M. Is not level. But these are things that can be sorted out :-)

 

[tony smith]

Hi
Ref the high levels on Newsnet, today reads slightly higher at our location, than yesterday, part of this level , as seen on good downlinking days(and uplinking ) is to account for the loss when the weather turns bad, like high amounts of rain,
which has much more loss at K and Ka than Ku, K and Ka was always intended to work via smaller uplink dishs( 80/90 cms) and to downlink into hubs(Large dishs at around 9 metres) to keep a good link budget, in most weather operations.

 

[John]

Newsnet receive level record for me tonight, with rain falling, 19.2dB. Peaks at 19.4dB.

 

[tony smith]

Newsnet receive level record for me tonight, with rain falling, 19.2dB. Peaks at 19.4dB.

John did your receive any other signals or just Newsnet? the other signals normally uplinking trucks are now seem way down on Newsnet

 

[John]

John did your receive any other signals or just Newsnet? the other signals normally uplinking trucks are now seem way down on Newsnet

It was just by chance earlier on in the afternoon Tony that i managed to raise the dish after doing some Cband re-configuring on my lnb multi changer and the winds dropped to a safer level. I switched the analyser on first on Ka and noticed it was up in level. At that time there was only Newsnet and Penthouse coming down. Didn't spend any more time on it due to time restraints so as to get the re-config job done. I noticed a few days ago there were about three coming down, Newsnet, 'Boris' ID and one more , all at different levels. 'Boris' was at about 16dB, Newsnet and the other at about 12 dB i think.

 

[scopus]

Normally the feeds for me are around 10-14dB. Newsnet with me earlier was around 18.7dB at its peak around 5.30pm.

 

[tony smith]

Hi John
Yes thanks for the info. Boris ID uplink can be higher sometimes than the average, I have seen it's carrier towering above
Newsnet , while watching others working hard to get a usable carrier level.

Also thanks Scopus for your info

 

[Anonymous_1]

18542 V 3630 2/3
sad news...

 

[zorbua]

Yes indeed it is.

 

[John]

..... I think i am having a near death experience here.
Does this ring a bell with you Chris-1979, read on

My 18Ghz XMW pll R9215HAF +12 to +24 volt supply started to show much lower signal levels a couple of days ago to the point where yesterday there was virtually no signals at all on the band.
Dismantled from dish expecting to find water ingress through feed cap seal or elsewhere ..... Nope, not the case. Dry as a Nuns.
Put it on the analyser and immediately saw very low gain, current draw of 229mA rising to 231mA after 30 mins or so on either 12 or 17v supply which is the same as when it was brand new four months ago. Supply it with 24v as a quick stress test and it failed, runs quite happily on 12 - 18volts.
Initial switch on from cold shows 46 dBuV rising up to 54 dBuV after 30 minutes..... 40 minutes plus and it starts to die and drops and holds at just over 40 dBuV and has a warm casing .

Looks like i need to fire an email off to Jin /xmw, South Korea re: returning. , going to miss my Newsnet ladies

 

[scopus]

Oh dear.....not the thing you want to happen given the price!

 

[Vipersan]

Just out of curiosity is the newsnet newsroom feed still off air ..
Check Monday through wednesday ..
feeds ok ...but the newsroom was off air..
rgds

 

[scopus]

Just out of curiosity is the newsnet newsroom feed still off air ..
Check Monday through wednesday ..
feeds ok ...but the newsroom was off air..
rgds

Ok here VS at 14.7dB..

 

[Vipersan]

Ok here VS at 14.7dB..

Thanks Scopus ..
I'll test again this evening..

 

[Archive-8]

I have been using the newsnet feed, to try and locate the sat.

@John yes some of that does ring a bell, I am going to swap the omt, and try it on another dish.

Hope Xmw sort it out for you.

 

[Vipersan]

Still nothing here ...??
just nipped home to check ..
feed at 18558v 3629
but nothing at 18591v 3630 ..
thats with the hughes linear lnb..
What frequency and SR are you seeing it Scopus ..?
Has it moved I wonder ...or is there something more sinister going on..
rgds
VS

 

[scopus]

Still nothing here ...??
just nipped home to check ..
feed at 18558v 3629
but nothing at 18591v 3630 ..
thats with the hughes linear lnb..
What frequency and SR are you seeing it Scopus ..?
Has it moved I wonder ...or is there something more sinister going on..
rgds
VS

On the ususal 18.557V 3630 VS, just taken this shot of the lunchtime clean feed. Ignore that 32ASPK, that is a fault with the latest TM software,,,