Alex Statsenko on X: "T-3 month July, 1957, Magazine "Radio" №7 - Announcement of artificial Earth satellite frequencies and recommendations for radio amateurs"

x.com · 2026-10-06 · by Long Nguyen ·xcom
T-3 month July, 1957, Magazine "Radio" №7 - Announcement of artificial Earth satellite frequencies and recommendations for radio amateurs

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