Airport radar is interfering with my circuitry
Radar Pi filters and ferrite beads in addition to shielded pairs or signals will correct your problem as long as the ground and slots in a case don't resonate the signal. 


  Murata has the right NPO caps in the &lt;50 pF range and ferrite CM filters and chokes for microwave.  All IO cable signals need capacitive to ground feedthrus and CM chokes. Exposed boards need a good ground plane or earthed box. 


Experience

Burroughs had a similar problem on the top floors of Richardson Security Exchange in Winnipeg. The tallest building still at Portage and Main. The 207 14" Disk drive was getting random errors on the read-write chain serial differential data.

Factoid: Since Bill Richardson's family had a long history of wealth and he became a Pierre Trudeau cabinet minister. he had pull.. so it is written into the city bylaws that no building in Winnipeg can be taller than his.  Little did they know about Radar.  

But then down the block, where NRC was inventing mobile 7 Tesla medical scanners, every CRT in the building when the MRI was fired up in the basement.  Metal Chairs were once reported to be once pulled in at lethal velocities across the room and any credit card anywhere inside the chamber would get demagnetized.

It needed an EMI fix ... fast.

The customer was the biggest Investment company around and data records were getting infrequently but randomly corrupted. 

It was Wpg Intl  Airport Radar. 

The field fix took a few days, to patch and weeks for general production after test verification. It was my 3rd employer and it happened just before I got there in 1982.