I want to personally thank Richard for taking the time last night to send me the manual for the F4. He took the time and scanned one of his manuals them emailed me a copy. Talk about a nice guy, I didn't even order my F4 from him and he still went to all that trouble for me. If it wasn't for having a dealer that I have been doing business with for along time I would of ordered from Richard. So any of you's that are looking for a new detector or an upgrade I strongly suggest Richard at Richard@BackwoodsDetectors. It is so nice knowing that there are such good people at the "business" end of metal detecting. My hat is off to you Richard. Thanks again! Steve (upstate New York).