about maestro zapper mz3c it has alot of sweep frequencies,1)classic 30khz,2)large sweep between 8khz and 16khz leaving 255 frequecies.3)the classic 2.5khz,enhanced by a narrow sweep,leaving 64 different frequencies.with the 2.5 sweep it goes from 2426 to 2516.in saying all that i remember that you said that sweep frequencies dont work as well as single frequencies,but if close together like 2426 to 2516 does that work better??i know you are a friend of antonio from maestro site,but could you give me an opinion about the above zapper without putting anyone's zapper,,,objectively.thanks again parazapper,you are a great help with zapper knowlege,and i appreciate it.