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Q&A about LTE/CATV interference


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#1 olo131

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Posted 19 June 2012 - 07:51 AM

Q: How is LTE different from other cellular technologies?

A: LTE is being deployed at 700 MHz, which overlaps in frequency with all cable systems in the United States. LTE also uses different modulation schemes that make ingress/egress interference more likely.



Q: Is LTE interference a serious issue?

A: Yes. Cellular network operators throughout the country are reporting 700 MHz interference due to cable egress. Cable network operators are also reporting ingress issues related to LTE uplink and downlink issues.



Q: Can I find 700 MHz LTE egress using my traditional leakage detectors?


A: No. Traditional leakage detectors can only see analog signals at low VHF frequencies. These tools cannot detect digital (QAM) signals and cannot be tuned to 700 MHz.



Q: How can 700 MHz LTE interference be reduced or eliminated?


A: Sound engineering practices used to mitigate analog aeronautical band interference can also be used for higher frequency digital signals. The key is being able to detect and locate ingress/egress locations in an accurate and efficient manner.


>Learn more about LTE/CATV interference



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