https://www.retrosignals.iohttps://substackcdn.com/image/fetch/$s_!hYy8!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F81e1223d-ca59-4093-8956-01b2e5fcf864_144x144.pnghttps://www.retrosignals.ioSubstackTue, 21 Apr 2026 10:32:45 GMT