Restart needed to display new band

[fruitofgeorge]

Hi. Thanks for making this useful piece of software. I'm using the latest release on mac OS 12.6.9 and have noticed weird behavior. When I select a new band I can see on the rf explorer's display that it takes the new frequency range but the software displays nothing and reports the range as NaN - NaN Hz. If I quit and reopen the application then it adopts that new band the rfe is set to and displays correctly. This happens any time a new band is selected. I'd also like to make a suggestion for a "manual" band which allows the user to input a start and stop frequency. This could be useful if you're using multiple bands or different brands mixed and want to see an overview of everything.