I use one and it does work.You have to buy a high end unit.I will try to locate the site that I bought
mine from.To be honest,I wish a person like JROB(sorry if I spelled it wrong)would do some research
and start selling them from his site.We need to support our family,Toplace,Debbie,BlueMax,etc.I hate
spending money at sites that do jack to help us.