Hi,

In the past the company OREXIS provided an online HF bandscope

Here is one of their outputs (reduced size),
http://www.astrosurf.com/lombry/Radio/hf-spectrum.gif
Their website is no more active.

Does someone know if we can find similar graphs somewhere else on the
Internet ?

Thanks in advance

Thierry, ON4SKY
http://www.astrosurf.com/lombry