5g interference

iBoston

SatelliteGuys Pro
Original poster
Jul 15, 2014
2,674
2,241
North Central
I have a question. I am having jittering/stuttering across the entire TP spectrum. I'm seeing it at 4060 and 4100 and even higher. Is this a normal thing. I would have thought you would only see it on the lower frequencies closer to what was taken from Cband a few years back. This problem crept up about 3-4 months ago, and before i just throw money at the problem by investing in a filtered LNBF, i want to do a bit of checks and balance with you folk.

My stuttering appears as often as every 20-30 seconds and sometimes it doesn't happen but every 20 minutes or so. I seem to have solid locks on the signal. This is on a smaller 8' Solid Cband dish. I swapped out a different LNBF. Same result.

If the advice is to get a new filtered LNBF, would I be looking at the Titanium RED or BLUE band pass filter?
 
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5G carriers DO NOT only affect satellite signals located on the same frequency.

What does this mean?
If the LNB band pass frequency range allows signals from interfering carriers (such as 5G N77 and N78 low band & High band) to be downconverted and amplified, these strong 5G signals can affect the reliable reception any transponder within the band pass frequency range.

Why does this happen?
LNBs and LNBFs downconvert and amplify in a block (Low Noise Block) of frequencies, which are sent down the coax and tuned with the satellite STB. Filters are placed on the incoming satellite signals and the outgoing signals to determine the frequency range that will be passed and the ranges that will be blocked. If a strong signal is received within the frequency range that is allowed to pass, the LNB's automatic gain control will reduce the amplification gain across the entire block of frequencies to prevent over-amplification and receiver overload.

The STB then receives a poor signal with a reduced Signal to Noise Ratio. The STB then applies Forward Error Correction to attempt to correct the missing and damaged data in the Transport Stream. The break-up and /or loss of the video and audio happens when the number of errors become too great and the FEC no longer is able to correct and decode. When it gathers enough data to decode, then the video and /or audio is temporarily restored until the errors overcome the ability to correct.
 

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