Which C-BAND lnb, 5g ?

Lexzie

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Still no-one gave an advice on which LNB to buy and where?
 
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Lexzie said:
Still no-one gave an advice on which LNB to buy and where?
Click to expand...


For a dual probe LNBF the Titaniun C138 or C238 are supposed to be good.
There are also other LNBF available from Ali Express.
I have also had some success with a Titanium C1PLL Wimax LNBF.

For a single probe LNB, possibly the best solution is to use a normal LNB with an external band pass filter between the LNB and the feed.
If you want an LNB with internal 5G filtering there are some available from Norsat.

What works for one person might not be as good for another person.
It can depend on how close any how many 5G towers there are with respect to your dish installation.
There is no "best" solution, it is what solution works for you.

The best way forward might be to start with the cheaper options to see if they work for you?
 
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I had a Titanium C238 LNBF delivered yesterday (pics below).

This model has a frequency range of 3.8 - 4.2 GHz, described as "5G RED 2"
I think the "red" part of the description relates to the frequency cut off point?

When time permits, the plan is to do a direct comparison with the Titanium 3.7 - 4.2 GHz "WiMax" LNBF followed by comparison with an ALGA RED band pass filter with WR229 LNB attached.


.
Titanium C238 p0.JPG Titanium C238 p1.JPG Titanium C238 p2.JPG
 
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moonbase said:
I had a Titanium C238 LNBF delivered yesterday (pics below).

This model has a frequency range of 3.8 - 4.2 GHz, described as "5G RED 2"
I think the "red" part of the description relates to the frequency cut off point?

When time permits, the plan is to do a direct comparison with the Titanium 3.7 - 4.2 GHz "WiMax" LNBF followed by comparison with an ALGA RED band pass filter with WR229 LNB attached.


.
View attachment 153942 View attachment 153943 View attachment 153944
Click to expand...

And we can add the Chinese 3.9 to 4.2GHz 5G external filter into the comparison mix Dave once it arrives here to me - interesting times to come
 
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yang sat said:
I don't have room for a C-band antenna. I have a 3.7-4.2 LNB. But I don’t have a 3.8-4.2 3.9-4.2 LNB. If you want to try it I'll give it to you for free.View attachment 153945
Click to expand...


The design shape of your 3.7 - 4.2 GHz 5G LNBF is almost identical to the Titanium C238 I just received.
Same pair of indents on each side where the screws are and same four x 90 degree angled corner shapes that enclose the area for the label.

Probably made in the same factory in China and priced according to the label/brand name of the retailer?
 
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yang sat said:
I don't have room for a C-band antenna. I have a 3.7-4.2 LNB. But I don’t have a 3.8-4.2 3.9-4.2 LNB. If you want to try it I'll give it to you for free.View attachment 153945
Click to expand...


Generous offer yang but not for me at the moment thankyou. Would be interesting to see it with the cover off with a hi res shot of the pcb :) .
 
MCelliotG

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Just a dumb question: Do these LNBs cut off completely anything below 3.8Ghz? If for instance, I would want to watch the Russian satellites, will these not work?
 
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MCelliotG said:
Just a dumb question: Do these LNBs cut off completely anything below 3.8Ghz? If for instance, I would want to watch the Russian satellites, will these not work?
Click to expand...


It can depend on the specific LNB(F) as to how aggressive it is with the cut off. Different manufacturer models might vary.
I have some 4.5 - 4.8 GHz LNB's for extended C-Band but they scan and lock frequences as far down as the 3.9GHz range.

Some of the Russian satellites are very powerful, 40E for instance has huge signal levels.
A normal C-Band LNB might still be OK but it also depends on the proximity of any 5G towers as to how much impact they have.
 
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yang sat said:
I don't have room for a C-band antenna. I have a 3.7-4.2 LNB. But I don’t have a 3.8-4.2 3.9-4.2 LNB. If you want to try it I'll give it to you for free.View attachment 153945
Click to expand...
That picture reminds me of something I should have posted before Christmas..Imagery of the shielding for C band and Ku band, in case the tower is in view. One panel can be installed in direct line to mask invasive 5G signals.

The Sky dish looks to have similar hole diameters to provide a reasonable filter, so all you need is a bulk buy of reflectors and cut to shape.

I also have imagery of K band filtering (8-14 GHz), used on airfields (military) near built up areas.
 

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yang sat

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Channel Hopper said:
That picture reminds me of something I should have posted before Christmas..Imagery of the shielding for C band and Ku band, in case the tower is in view. One panel can be installed in direct line to mask invasive 5G signals.

The Sky dish looks to have similar hole diamters to provide a reasonable filter, so all you need is a bulk buy of reflectors and cut to shape.

I also have imagery of K band filtering (8-14 GHz), used on airfields (military) near built up areas.
Click to expand...
Satellite Dish Love these shields.
 
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MCelliotG said:
Just a dumb question: Do these LNBs cut off completely anything below 3.8Ghz? If for instance, I would want to watch the Russian satellites, will these not work?
Click to expand...
3.4-4.2 3.6-4.2 3.7-4.2 3.8-4.2 3.9-4.2 4.0-4.2 LNB are all in stock. what do you need. It should be possible to ask the salesperson. If you receive 40 degree satellite TV programs. It is recommended that ordinary 3.4-4.2 is enough. But stay away from 5G mobile phone base stations, add satellite antennas and shielding nets

IMG_9410.jpg
 
Manikm909

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thats quite the construction
 
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Just an observation and a bit of info to share for today re: 70 West PAL transmissions / 5G battle.
The usual fairly weak Vertical PAL signals are not present this morning, the Hor ones are still there.
An update to come soon re: the battle with C-band 5G interference at my location in Central UK comprising of comparison results for different LNB, not LNBF types, and also between various ranges of Chinese made 5G external range units through to the excellent Canadian ALGA RED~3.82 to 4.2 GHz External 5G filter, with eventually a comparison test on one of the new Norsat 5G 3.820-4.2GHz lnb's without using the ALGA RED 5G filter.
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
70WEST~PAL Ver Sigs missing.....jpg
 
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Have verticals been shut down or weakened? Can you still get any digital transmissions?
 
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Here's a scan using an EF Data 35K LNA with a vertical linear feed and scalar ring at 1.5m above ground, no dish. The location is surrounded by trees, near Chelmsford, Essex.

The analyser was set to max hold for about 10 minutes.

Marker 1 3.8GHz, 2 4.2GHz and 3 peak level

Radar altimeters are visible around 4.3GHz

EFData_35K_LNA_V_feed+scalar_31-3-24.png
 
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Captain Jack said:
Have verticals been shut down or weakened? Can you still get any digital transmissions?
Click to expand...

4.010 V. PAL & 4.170 V PAL are very very weak just above noise signals showing on the analyser - the LT8700 rx running flat out does not see anything at all.
3.970 V. PAL & 3.850 V PAL showing no sign at all on analyser.
3.790 V. PAL and below is lost to 5G filter attenuation.
Digital Vertical signals highlighted and seem normal level but are just under lock.... they were very slightly better Pre 5G destruction days but still under lock on my 2.2m PF.
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

70WEST~ Digital Ver Sigs.png
s-band said:
Here's a scan using an EF Data 35K LNA with a vertical linear feed and scalar ring at 1.5m above ground, no dish. The location is surrounded by trees, near Chelmsford, Essex.

The analyser was set to max hold for about 10 minutes.

Marker 1 3.8GHz, 2 4.2GHz and 3 peak level

Radar altimeters are visible around 4.3GHz

View attachment 155224
Click to expand...
 
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s-band said:
Here's a scan using an EF Data 35K LNA with a vertical linear feed and scalar ring at 1.5m above ground, no dish. The location is surrounded by trees, near Chelmsford, Essex.

The analyser was set to max hold for about 10 minutes.

Marker 1 3.8GHz, 2 4.2GHz and 3 peak level

Radar altimeters are visible around 4.3GHz

View attachment 155224
Click to expand...


Interesting G , forgot to reply to the email yesterday due to distractions
 
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s-band said:
Here's a scan using an EF Data 35K LNA with a vertical linear feed and scalar ring at 1.5m above ground, no dish. The location is surrounded by trees, near Chelmsford, Essex.

The analyser was set to max hold for about 10 minutes.

Marker 1 3.8GHz, 2 4.2GHz and 3 peak level

Radar altimeters are visible around 4.3GHz

View attachment 155224
Click to expand...


Is marker 3 area showing local 5G tx ?.
 
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John said:
Is marker 3 area showing local 5G tx ?.
Click to expand...
Possibly but the scan was done where I used to have a dish i.e. shielded by the house and trees to the north and by trees in every other direction. There are no cell sites within about 1/2 mile and none line of sight. Using a portable analyser, the levels were 10-20dB higher outside the tree screen.
 
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