mirror of
https://github.com/f4exb/sdrangel.git
synced 2026-01-16 02:25:32 -05:00
24 lines
1.1 KiB
Plaintext
24 lines
1.1 KiB
Plaintext
UK transmitter data:
|
|
|
|
TxParamsAM.csv. TxParamsDAB.csv, TxParamsVHF.csv - https://www.ofcom.org.uk/spectrum/information/radio-tech-parameters
|
|
|
|
700-plan-clearance.xlsx - https://www.ofcom.org.uk/spectrum/information/transmitter-frequency
|
|
|
|
French transmitter data:
|
|
|
|
sites-DAB-TII-v0.10.csv - https://extranet.arcom.fr/radio/index.php
|
|
|
|
|
|
WMM (World Magnetic Model):
|
|
|
|
Download ERSI shapefiles from: https://data.ngdc.noaa.gov/geomag/wmm/wmm2025/shapefiles/
|
|
Open D_2025.shp in QGIS: https://qgis.org/
|
|
Layer > Open Attribute Table, Toggle Edit Mode, Delete unneeded contours (E.g. odd values).
|
|
Edit > Edit Geometry > Simplify feature, Draw box around all geometry, set tolerance to 0.1 and check reduction in number of verticies.
|
|
Layer > Save As...
|
|
|
|
QGIS geojson export doesn't support styles (See: https://github.com/qgis/QGIS/issues/21195) so manually edit the geojson and insert:
|
|
|
|
"stroke": "#ff0000" properties to set color. Negative blue, positive red, 0 green.
|
|
"stroke-width": 0.5, for contours that aren't multiples of 10 and 1.0 for those that are.
|