Statements (29)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
radio propagation phenomenon
|
| gptkbp:affects |
TV signals
FM radio signals VHF radio signals |
| gptkbp:alsoKnownAs |
Es propagation
|
| gptkbp:canOccurAt |
VHF bands
lower HF bands |
| gptkbp:cause |
enhanced signal reception
signal fading unexpected radio interference |
| gptkbp:causedBy |
ionization of metallic ions
wind shear in the ionosphere |
| gptkbp:commonIn |
summer months
mid-latitudes |
| gptkbp:discoveredIn |
1930s
|
| gptkbp:distance |
hundreds to over 2000 kilometers
|
| gptkbp:enables |
long-distance radio communication
|
| gptkbp:frequency |
30 MHz to 150 MHz
|
| https://www.w3.org/2000/01/rdf-schema#label |
Sporadic E propagation
|
| gptkbp:involves |
gptkb:sporadic_E_layer
|
| gptkbp:monitors |
gptkb:ionosondes
radio enthusiasts |
| gptkbp:occurredIn |
gptkb:Earth's_ionosphere
|
| gptkbp:relatedTo |
F2 layer propagation
ionospheric propagation |
| gptkbp:studiedBy |
amateur radio operators
radio scientists |
| gptkbp:bfsParent |
gptkb:SPR
|
| gptkbp:bfsLayer |
6
|