Dave, this might help you determine if it's 5G problems - make a small coax lead up, feed from your Promax into a temp Cband lnb with feed as in picture, or use a spare lnbf you might have, set LO & power to lnb etc, - go outside , point lnb horizontally , spin yourself around and direction find looking for signals from anywhere between 3.5 - 3.8 GHz that look like the ones ive posted on the video. The signals shown are from a 5G cell just 300mtrs away from me due south using a funamental centre tx freq of aprox 3.79Ghz and a tx panel looking straight at me. You can see the destructiveness it's causing the lnb up to nearly 4.190Ghz.
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