OTHER 5G LNB Question?

[TheSatMan]

I am just wondering if anyone knows of a LNB with a 5G filter in it that does between 3900-4200, the 3800-4200 lets the 5G in and the 4000-4200 filters out the signal I am trying to get. If there is no such LNB has anyone ever modded one you do 3900-4200? Actually like 3910-4200 would be even better since I am almost sure the 5G is on 3900.

 

[Titanium]

I am just wondering if anyone knows of a LNB with a 5G filter in it that does between 3900-4200, the 3800-4200 lets the 5G in and the 4000-4200 filters out the signal I am trying to get. If there is no such LNB has anyone ever modded one you do 3900-4200? Actually like 3910-4200 would be even better since I am almost sure the 5G is on 3900.

No such LNB exists. You cannot filter out the same frequencies that you wish to receive.

N77 high band extends to 3980 MHz. If your interference was from N78 or N77 low band type 5G, the Red filter would work and you could receive satellite transponders in the 3900 range. If you are unable to receive transponders in the 3900 MHz range using a LNB with Red type filter, the 5G type of interference is N77 High band.

Likely, your best option is to use a Red filter LNB (3800 - 4200 MHz) and physically block the terrestrial 5G signals from reaching the feedhorn. Replicate what we did in the 80's to block AT&T microwave. Identify where the interference is coming from and move the dish behind a building or build a rf shielding fence out of hardware cloth or chicken wire.

 

[TheSatMan]

No such LNB exists. You cannot filter out the same frequencies that you wish to receive.

N77 high band extends to 3980 MHz. If your interference was from N78 or N77 low band type 5G, the Red filter would work and you could receive satellite transponders in the 3900 range. If you are unable to receive transponders in the 3900 MHz range using a LNB with Red type filter, the 5G type of interference is N77 High band.

Likely, your best option is to use a Red filter LNB (3800 - 4200 MHz) and physically block the terrestrial 5G signals from reaching the feedhorn. Replicate what we did in the 80's to block AT&T microwave. Identify where the interference is coming from and move the dish behind a building or build a rf shielding fence out of hardware cloth or chicken wire.

It is behind a building, can you point me to a pic of what you mean by "build a rf shielding fence out of hardware cloth or chicken wire." I just can't visualize what you mean.

 

[Titanium]

Evidently, the building is not in the right position to block the interference.

Use a spectrum analyzer, even as simple as the Tiny SA Ultra: www.amazon.com/ALIESTFDNO-Upgraded-Spectrum-Frequency-Generator/dp/B0D3GYBXMH connected to a powered C-band LNBF to determine the direction the interfering signals are coming from (directly or reflection). Build or buy chain link fence panels (frames) and affix wire mesh with small openings, such as galvanized poultry fencing or hardware cloth. Before installing the panel(s), move the panel(s) around to determine the best placement to block the interfering signal path(s), while not blocking the satellite signal path.

Instead of building a frame, one could install some tall fence posts (8, 10 or 12 ft) and install the galvanized poultry fence or hardware cloth between the posts. Best practice is to ground the wire mesh.