RG-6QS is a lot better than RG-58.
Cheap and compromise are two words that come to mind when I hear RG-6 discussed for scanner antennas. It cost more for LMR400 but why not do it up right?
ohh I knew I would get in troubleAt 900MHz, RG6 has about 3dB more loss than LMR400 on a 100-foot run.
I think you misunderstood me. 3dB is a difference, but not one that is going to make the difference between hearing something and not in most cases. It's not best practice, but will work reasonably well for runs under 100 feet.