Rudy
Admin
You are welcome guys. Glad you found it helpful.
Sorry for bumping an old post, but this seems like the best place for my question.
I just bought a Sand Shark (P.I.) and I want to get as much depth as possible so I run the Pulse Width (gain?) setting maxed. When I adjust the threshold knob, I can start to hear the threshold at about 30% but it is unstable and breaking up, kind of sputtering, it isn't until I turn it up to 60% or so that the threshold hum is a stable hum. I then adjust the volume so scanning a surface quarter is loud, but the threshold is now far louder than "barely audible"...
I can lower the volume to make the threshold barely audible, but a surface quarter will be much quieter. I imagine lowering the pulse width would allow me to get a stable threshold at a lower setting, but that would defeat my purpose of max depth..
Does it matter how loud the threshold is or is it just making sure to have it at the lowest stable setting?
Anyone want to help point me in the right direction?
Edit: With it set like above with the lowest stable threshold, max gain, I can't seem to get the threshold to null in my test garden... I get good depth on normal beeps, but it goes from positive change in threshold (beep) to no threshold response as I raise the coil... I thought there would be a null area in between getting a beep and no response...
Very good information. I have been confused about this, but that helps a lot.
Wow, this was a great thread! Wish I'd read this a couple weeks back.
Dave
Threshhold is when your getting along fine with your wife, volume is when she's upset!