48.2 West - unknown satellite - possibly Echostar

[Channel Hopper]

46N, 14.5E

Slovenia ?

 

[Satfaca]

Right in the heart.

 

[Channel Hopper]

Right in the heart.

I landed there a couple of times when there was too much fog at Treviso, a lovely part of the world.

 

[dreamsat]

The first two images are from position 47.5 west and the other two are from 48.2 west.
I'm sorry, but I don't see anything there. With my sensors, I can drive exactly to two places behind the decimal point. I also searched everything nearby. There is nothing to be received at my location.

best regards

 

[Satfaca]

Mystery of all mysteries.

 

[SatSearcher]

Something doesn't add up here! Seems nobody in western Europe can see these, probably because the 2 data signals on 12363V & 12407V on the Atlantic beam of 47.5W would interfere with 12390V. So if there is an unknown satellite at 48.2W, it seems to be targeting Eastern Europe and maybe Asia, but why would they put a satellite so far west in an Atlantic position to target Eastern Europe?

 

[John]

The two data channels on 47.5W are quite strong here on a 1.2 CM , moving across to 48.2 W position did not show any new signals with CS or the analyser, just a reduced level of the two data channels from 47.5W
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[Channel Hopper]

Mystery of all mysteries.

What is the local oscillator of your LNB that is being used ?

(Make and model might also assist.)

 

[Satfaca]

What is the local oscillator of your LNB that is being used ?

(Make and model might also assist.)

9.75 / 10.6 GHz
New Japan Radio NJRC NJR2842S

 

[Satfaca]

Mystery solved.
I called the national Agency for communication networks and services to inquire about any possible MMDS services in the area and they told me there's indeed one operator operating which might be using these exact frequencies; which he confirmed.
One can ask himself how much possibility exists to get such signal repulsion right from the Clark's belt? With antenna inclination of 10° obviously just about 100%.

Sorry for waisting your time...

 

[astra19]

Excellent! Thanks for updating. It was a very interesting mystery.

 

[Adam792]

Mystery solved.
I called the national Agency for communication networks and services to inquire about any possible MMDS services in the area and they told me there's indeed one operator operating which might be using these exact frequencies; which he confirmed.
One can ask himself how much possibility exists to get such signal repulsion right from the Clark's belt? With antenna inclination of 10° obviously just about 100%.

Sorry for waisting your time...

Very interesting! So these are MMDS using DVB-S2 modulation at Ku Band frequencies?

Presumably if you change the inclination to point at the transmitters you would be able to peak and tune them in?

I didn’t realise MMDS was used in these frequency ranges. In Ireland it used to use the 2.6GHz range with DVB-C or DVB-T, although that closed when those frequencies were required for 4G LTE mobile phone signals a few years ago. The down-converters shifted the signal there into the Superband (~230MHz+) or UHF (474MHz+) ranges so that standard digital cable or digital terrestrial receivers could tune it in.

 

[Satfaca]

Not all EU countries granted this spectrum for MMDS distribution, Slovenia did. In operation since 2005, if I am right.
It's a "wireless cable", in fact, people do receive these services with a normal 80cm satellite antennas fitted with a special LNB which also enables two-way internet service. Developed by domestic company Globtel. Antennas of course need to have complete clear sight to a transmitter...

 

[Channel Hopper]

Are you sure it is not an IF frequency clash ?

I've not heard of anyone using 11-13GHz for terrestrial stuff, (yet), it has always been high S-band, peaking out at around 2.6GHz, with the very latest mast technology that is licenced to just below 10GHz.

 

[Satfaca]

Yes, I am sure.
Found some presentation...
There was another tender in 2014 and the whole sprectrum up to 12.500 was awarded to a couple of companies in different regions.

As far as I understand, there are MMDS networks in this band in Germany as well...

 

[hvdh]

So now you can search the horizon with a small dish to probably find the real earthly direction!

 

[Satfaca]

He he, I can in fact see the (major) transmitter from here but I haven't had a clue there was a MMDS operating on 12 GHz here.

 

[anto@]

this is a signal transmitted by terrestrial transmitters, a frequency similar to satellite is used in the video you can see that the antenna almost guards the ground, here we are at 66 west, in this slot there are no satellites that can be received from my position, no blocking of the signal best regards

 

[anto@]

this signal is already present at 63 west, this time vertically, in the video you can also see the signal present at 63 west of the telstar satellite 14 - 11634 that I receive optimally