titanium C138

dreambox1959

dreambox1959

Specialist Contributor
My Satellite Setup
Octagon SF8008 - technomate 7100
My Location
france
A few months ago, I bought a Titanium C138 LNB;
I installed it on my dish this afternoon.But during testing, I couldn't find any channels at all!
I checked the dielectric plate and the connectors...
I ran a full scan and found a few transponders on 8° West, but not all of them!
The LNB packaging says: 3800–4200 MHz.With the 5G filter, I'm losing 400 MHz!
I used to use a cheap Chinese LNB (3400–4200 MHz range) without any issues.
Is there a good C-band LNB (PLL) that covers the full range, or at least the 3600–4200 MHz range?
 
If you bought this LNB, you should have known that it cuts off frequencies below 3800 MHz; it is doing its job correctly.
If there is no 5G in your area, then any LNB will work.
But if there is 5G around you, that is the one you have to use—you have no alternative.

That is what I did with two identical LNBs.
 
I've made some tests this week with C138 Lnb and Triax 100cm dish.
I never test C-band before but I know that a 100cm dish is highly limited for C-band reception, and I'm also surrounded by 5g towers.
Anyway the main goal of these tests was to catch some low c/n lock frequencies.
From 49e to 40.5w results are very aleatory, on 40e by example, signal can reach 8db and drop to 2 db with nearby frequencies. I think something perturbed signal but I can't say if it's 5g towers or the c138 lnb ... I need to try with another lnb
 
AtOM13 said:
I've made some tests this week with C138 Lnb and Triax 100cm dish.
I never test C-band before but I know that a 100cm dish is highly limited for C-band reception, and I'm also surrounded by 5g towers.
Anyway the main goal of these tests was to catch some low c/n lock frequencies.
From 49e to 40.5w results are very aleatory, on 40e by example, signal can reach 8db and drop to 2 db with nearby frequencies. I think something perturbed signal but I can't say if it's 5g towers or the c138 lnb ... I need to try with another lnb
Click to expand...
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>>signal can reach 8db and drop to 2 db with nearby frequencies. I think something perturbed signal but I can't say if it's 5g towers or the c138 lnb<< ...
That same symptom occurs here with me for Cband reception - in my case it's the very nearby 5G cell tower. Usually not too much of a problem when using a 5G Norsat 3.82 to 4.2GHz lnb or a Tit C138 but if the cell does any beam shifting to suit needs then it causes a bit more hassle
 
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dreambox1959 said:
A few months ago, I bought a Titanium C138 LNB;
I installed it on my dish this afternoon.But during testing, I couldn't find any channels at all!
I checked the dielectric plate and the connectors...
I ran a full scan and found a few transponders on 8° West, but not all of them!
The LNB packaging says: 3800–4200 MHz.With the 5G filter, I'm losing 400 MHz!
I used to use a cheap Chinese LNB (3400–4200 MHz range) without any issues.
Is there a good C-band LNB (PLL) that covers the full range, or at least the 3600–4200 MHz range?
Click to expand...
Since the cut-off is at 3800 MHz, a filtered C band LNB will receive nothing higher than an IF frequency of 1350 MHz. To receive anything lower in the band with it you would have to adjust, or remove the filter completely.

8W has only three transponders filtered out with the unmodified 5G LNB in place.



Yes, there are good non 5G LNBs out there, as cheap as the Titanium.
 
Do 5G cell towers affect the entire C-band, from 3.6 GHz to 4.2 GHz ?
 
AtOM13 said:
Do 5G cell towers affect the entire C-band, from 3.6 GHz to 4.2 GHz ?
Click to expand...

Long story Short , from my personal experience - if you live with a 5G cell 200 to 300mtrs from you and you are trying to use a Non 5G lnb or lnbf then Yes it can effect the entire range of C band reception
 
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Potentially of interest, if you have a mobile network using Chinese equipment.

The 6 GHz band is an important tool in satisfying demand for mobile. As shown above, it is difficult to meet demand if without it. While governments can juggle the mid-band maths, certain bands give them a much easier task in getting the job done.


What are the policy considerations?


The mobile industry is as agnostic as possible about how that 2 GHz mid-band demand can be met. In reality, countries are addressing this through a small number of bands:


  • By using the 3.5 GHz range (3.3-4.2 GHz) up to 4.2 GHz or considering below 3.3 GHz (3GPP n77 and n78)
  • By relying on adding more spectrum using 6 GHz (3GPP n104)
  • By considering parts of the 4.5-4.99 GHz range for additional capacity (3GPP n79)
Overview of mid-band spectrum bands.

 
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Ok thanks It's clearer for me now.
I will try with another C-band lnb with a larger range than C138 lnb.
 
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