VERY interesting idea.

Initial problems I invisage are:

1) It would require scanning of all the frequencies to produce the graph, a rough estimate John Ripley and I have just come up with is that whilst you are listening to a station building the profile of other frequencies would take about a minute.

2) If you are listening to the radio in the car the signal strengths will be constantly varying as you travel along (N.B. Most people only have tuner modules in the car (if they have one at all)) - Because the entire frequency range takes a minute or so to sample, the signal strengths would have to be carefully averaged over time.

In principle John and I think it is a workable idea, and we like it. However, we are rather busy trying to stabilise the current beta, and therefore new features will have to wait.

Toby