Image:Federal Radio Commission General Order 40 Map.png
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Federal_Radio_Commission_General_Order_40_Map.png (11KB, MIME type: image/png)
Map of USA divided into five zones used for allocating clear channnels in General Order 40 issued by the Federal Radio Commission in 1928
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- (del) (cur) 16:29, 27 February 2006 . . Hillrhpc (Talk | contribs) . . 563×377 (11,047 bytes) (Corrected zones for Maryland and Oklahoma)
- (del) (rev) 14:59, 27 February 2006 . . Hillrhpc (Talk | contribs) . . 563×377 (11,028 bytes) (Map of USA divided into five zones used for allocating clear channnels in General Order 40 issued by the Federal Radio Commission in 1928 {{GFDL}} Category:United States maps)
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