Conditions: the bands

Under the space weather, the Conditions tab shows a colour bar for each band: 80, 40, 20, 15 and 10 m.

Reading a band bar

1. Each bar is one band. Next to the band it says what it is for, for example “NVIS and EU”.
2. The bar runs from left to right across five parts of the day: morning, midday, afternoon, evening and night. Diana works them out from sunrise and sunset at your position.
3. The colour is the expectation: green is good, yellow fair, red poor.
4. The thin vertical marker is now. On the right it says what applies now, for example “now: good”.

What the labels mean

Label	Reach
NVIS	Close by, up to about 400 km. Ideal to be worked within your own country.
EU	Within Europe.
DX	Further away, outside Europe.

Band	Label in Diana
80 m	NVIS, EU at night
40 m	NVIS and EU
20 m	EU and DX
15 m	DX
10 m	DX

An indication, not a promise

The bars are Diana’s own rough estimate, based on SFI, Kp, the season and the time of day at your position. It is not a NOAA forecast. A band shown as “poor” can still be open: always listen for a moment.

Example in the field

Kp 2, quiet, SFI 91, in the evening in the Ardennes: 40 m is on good and is your best chance for Belgium and Europe. 15 m is on poor in the evening; no need to start there.

Without a position, Diana still shows the bars, but without the marker for now.