I've found that  hams are notorious for plugging in a multi pin connector and not securing the connector to be tight with the provided thumb screws.   The "I'll do it later, but I've got to get it on the air now" seems to always take precedence .     The connectors will wiggle and back out, often leaving an intermittent connection.

Likewise with PL-259 connectors.  Finger tight is simply not good enough for a reliable RF connection.  I use a pair of 4" Channel lock pliers to snug the PL-259 connectors.   And I solved many RFI issues for others just by tightening the PL-259's in the path.

73

Bob, K4TAX



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