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Old 12-11-2016, 12:04 AM
Robert Grant's Avatar
Robert Grant Robert Grant is offline
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Join Date: Feb 2008
Location: Monroe County, MI
Posts: 518
A fellow member of a club I'm in had his system hampered by a new 4G installation near his home.

At the time, he was able to fix the situation with an LTE filter that Radio Shack had been selling. The bad news is that RS discontinued the filter soon after.

The problem is more common in antenna systems that have a preamplifer at the antenna - the 4G itself is not directly causing the interference, but the preamplifer is overloaded by the 4G, causing the gain of the preamplifier to fall - even below unity, in some cases.

What is interesting is how the situation differs from country to country. In the UK, the government is mandating that 800 MHz LTE providers give filters to people who live near the new 800 MHz cells, and, for those residents in weak-signal areas who have preamplifiers, the LTE providers send out someone to go on the residents' rooves to install the filters!

In the USA, there's been almost no mention of these filters. One problem may be that at this time, we don't know what the low-pass frequency is going to be, until the auction is finished. Another is that the industry might not want Americans getting low-pass filters - as every viewer whose system is overloaded is more likely to become a cable or pay-per-view customer.

Last edited by Robert Grant; 12-11-2016 at 12:08 AM.
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