HF Radio wave propagation
Radiowave propagation in the medium and high frequency spectrum in DOC format
Visit HF Radio wave propagation DXZone Resource Page
Download propagation%201.doc file from www.qsl.net
Radiowave propagation in the medium and high frequency spectrum in DOC format
Visit HF Radio wave propagation DXZone Resource Page
Download propagation%201.doc file from www.qsl.net