It's probably due to the metal case on the SDS200 and using a mobile antenna stuck to a huge car sized file cabinet versus a duck on top of the radio as on the others. The rail freqs come in pretty decently on the SDS200, unlike all the other plastic cased handhelds and the disasterous HP-1, all of which had to have a lot of VHF stuff locked out. Once I get some favorites lists set up, I will go through each band and see what's up, but right now, I'm pretty happy. But I am jealous of the RF heaven a friend has at his house. Very clean spectrum there, except for cell phone freqs. The worst scanners work well there. Playing with the SDS200 and 100 got the bug in me to buy it.