Should note the other half of the context.

Although the Wow! signal had no detectable modulation—a technique used to transmit information over radio waves—it remains the strongest candidate for an extraterrestrial radio transmission ever detected.[3]

Radio bursts happen and are natural, this always sounds like perfect timing and a fluke to me.

Someone microwaved their coffee that day.

The precise location in the sky where the signal apparently originated is uncertain due to the design of the Big Ear telescope, which featured two feed horns, each receiving a beam from slightly different directions, while following Earth's rotation. The Wow! signal was detected in one beam but not in the other, and the data was processed in such a way that it is impossible to determine which of the two horns received the signal. There are, therefore, two possible right ascension (RA) values for the location of the signal

Also:

The significantly more sensitive Very Large Array did not detect the signal

If it was only detected in one feed horn, is it possible that the feed horn that picked up the signal registered a false positive? Or did the feed horn that didn't pick up the signal malfunction?

Just trying to find out if we can rule out equipment failure.