The list below is formed of links from members where they have found them particularly useful.
General Amateur Radio:
- RSGB: www.rsgb.org – Useful for finding general information about amateur radio.
HF and VHF Propagation websites:
- DX QSL : http://dx.qsl.net/propagation/ – A really useful collection of data from NOAA and other sources.
- NOAA (National Oceanic and Atmospheric Administration): http://www.swpc.noaa.gov/communities/space-weather-enthusiasts – A good summary of solar and geomagnetic conditions, including aurora forecasts.
- Chilton Ionosonde: https://www.ukssdc.ac.uk/cgi-bin/digisondes/latest_view2gif.pl?Station=chilton – You need to register to access this. It shows the MUF for both NVIS and various single hop distances.
- AuroraWatch UK: http://wp.lancs.ac.uk/aurorawatchuk/2017/09/06/flares-and-cmes-galore/ – Summary of solar flares, CMEs, aurora data.
- DX maps: https://www.dxmaps.com/spots/mapg.php – Real time maps constructed from DX cluster data. This is particularly useful for seeing Sporadic E and Meteor Scatter QSOs plotted. This shows openings for 6m and 2m and where the openings are currently. Since Es ionization clouds move westward in the northern hermisphere, it might predicate an opening to the UK that might happen in an hour or two’s time.
- PSK Reporter: https://pskreporter.info/pskmap.html – It shows the end points for QSOs for data modes, and CW. There are at least 2 ways in which this can be very helfpful:
- You can see all stations heard for a specified band to see where propagation is open.
- You can see where you can be heard. Call CQ for some minutes on a data mode or CW and see the signal to noise ratio at monitoring stations that decode your signal.
- Reverse Beacon Network: http://www.reversebeacon.net/ – Similar to OSK reporter but more geared towards CW.
- Hepburn Tropo Ducting: http://www.dxinfocentre.com/tropo_nwe_old.html – Useful for forcasts of tropospheric ducting for VHF, UHF, and microwaves.
- Line of Sight Path tool: https://heywhatsthat.com/ (thanks G4CDF)
- Presentation from W6AER: http://w6aer.com/downloads/Digital_Modes_W6AER_NCDXC.pdf
- M0LTE: https://m0lte.uk/
Other Useful Sites:
- The Telegraph and Morse Code. A brief survey of the development of Morse Code and its revolutionary impact on communications. Includes many useful links. Thanks Corrine!