In message , Big Bill
wrote

Yeah. Don't get a wideband as that'll pick up all kinds of unwanted
frequencies. I don't really know why they make widebands.

They make widebands because they are required for some reception

For instance Digital Terrestrial from Bluebell Hill are on channels 24,
27, 39, 42, 45 and 59 which requires a wideband aerial.

--
Alan