Statements (20)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:technology
|
| gptkbp:antennaType |
horizontal dipole
less than 1/4 wavelength above ground |
| gptkbp:canBeBypassedBy |
line-of-sight limitations
|
| gptkbp:enables |
short-range HF radio communication
|
| gptkbp:enablesCommunicationRange |
30 to 400 miles
|
| gptkbp:frequency |
3 to 10 MHz
|
| https://www.w3.org/2000/01/rdf-schema#label |
NVIS
|
| gptkbp:notEffectiveAgainst |
long-distance communication
|
| gptkbp:propagatesVia |
gptkb:ionosphere
|
| gptkbp:requires |
high angle radiation antennas
|
| gptkbp:standsFor |
Near Vertical Incidence Skywave
|
| gptkbp:usedBy |
gptkb:military
emergency services amateur radio operators |
| gptkbp:usedIn |
gptkb:disaster_response
rural communications radio communications |
| gptkbp:bfsParent |
gptkb:Napa_Valley_Independent_Studies
|
| gptkbp:bfsLayer |
8
|