noise on DVSWITCH

Paul on6dp

I have a HBLINK and DVSWitch on the same VPS.
There are about 40 users oin the DVSWitch (not on same time hi)
Few users, has a bif noise when they try to receive anything. Others don't have that problem.
Anybody can help me to resolve that problem?
Anybody has already had that problem ?

73 Paul, ON6DP

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