A single S5 caused the interference? Something doesn’t add up with this story.

A fleet of Antminers, perhaps, but even that would be unlikely.

Edit (addendum):

Details about the stock unit’s noise output; Antminer S5 runs at 61 to 65 dB at 4 feet. Modified S5 with a higher-quality fan dropped the measured sound intensity to 48 dB[0].

Follow-up Edit:

I just noticed that I’d clipped a section of my response...which would have made it clear that my doubt was that the S5 put out emissions that interfered with T-Mobile. I referenced sound later, but only intended that to be a point of reference.

Whoops!

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[0] https://www.ccn.com/review-bitcoin-asic-miner-bitmain-antmin...