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A comment on The 'war tubas' we used to spot warplanes before radar (2018). Parent comment

Re:The 'war tubas' we used to spot warplanes before radar (2... by anamexis on Thursday May 28, 2020 @11:13AM (#23338276)
From the article, it seems like the four horns on each individual unit are enough to do the triangulation.
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