Certainly, the hum issues are valid, and obviously a concern for Uniden, but it is also apparent that the hum issue (and others as noted) is with a minority of owners. As with all electronics, there is going to be a few lemons. If you bought an SDS200 and it works great out of the box it's not because you got a 'good one', it's just that some people have a 'bad one'. The majority of SDS200 owners are satisfied customers . I have 2 SDS200s, both issue-free, and an early adopter of the SDS100, the only issue being the broken battery compartment clip. Uniden sent me the part, warrantied and free, and I installed it myself. Bada-boom-bada-bing. (Thank you, Uniden Support - Jenna!) Now I have 3 SDS scanners that I consider top of the line. With zero issues. IMO, best scanners to hit the market in a very long time.
JD
kf4anc