4 ms·
DXpeditions aren't based in island locations because HF propagates better over water, they're based in island locations because those are the locations that peo
by atomicthumbs 9y ago
DXpeditions aren't based in island locations because HF propagates better over water, they're based in island locations because those are the locations that people haven't tended to log, as they're entities that don't have any people (or have people, but no ham operators) living on them and thus need to be "activated" for someone to count them as contacted.
- slr555 9y agoThis a lift from a radio club slide on propagation: Types of Propagation ●Ionospheric waves (sky waves): Main portion of the radiation that leaves the antenna at angles above the horizon ●Tropospheric waves: Radiation kept close to the earth’s surface due to bending in the lower atmosphere (higher HF or lower VHF) ●Ground waves (surface waves): Radiation directly affected by the earth’s surface - Earth-guided surface wave - Vertically polarized and absorbtion increases with freq - **Travels much further over water than over land** So I agree it’s not the sole criteria for dxers. But they a better chance of hitting some distant stations for QSOs with propagation over water. I suspect it’s why the am stations in the Jersey swamps have their towers over water. 73