hello i have the pro-137, my question iwould like to get radio shack item 273-316 universal 1000ma ac adaptor. the manuall stats the power source must be class 2. this item is class b would this still work. also could i use this for my other scanners in case something happens to the cords my other scanners are gre-500 and the uniden 996t. this adaptor would be only for the 137. just asking for the other scanners just in case, i dont want to use the wrong power cord and ruin these two. if any one has any help on this as to if this will work primarily for the 137, and also for the other two just in case.. thanks for any help, ps i didnt know how to put the link in for the adaptor, so if any one is willing to help you have to look it up at radioshack. thanks again frank