Thank you for your quick responce. I do get the right freqeuncy, how ever it would go up or down with maybe 100hz. This can only be seen by keeping a Hz meter atached. Even the zappicator board thats suppose to run on 1000Hz runs at 1100Hz. The 30Khz Zapper runs in my case at 29300Hz. So how close is close enough ? I use a 30 Khz zapper that was alltered to go from 30hz to 1.3Mhz I can get pretty close to any frequency inside this range.