Still very new to the gpx. I go through the routine of EMI reduction and then GB, but even when absolutely motion less, every 5 seconds I get a warbling sound that lasts for about a second or so. When I start to swing a bit, it still does that warbling at the same interval. This is with the 11 commander DD. I haven’t tried this with the mono yet. I do have a single phase 7200V line about 200’ away. All settings are at factory presets. I have tried adjusting RX gain and stabilizer without success. The only thing that smooths it out is the cancel switch. Is this a common occurrence? I’ve searched 25 pages of Minelab forum pages (here) to root out the answer, but no luck yet.
Thank you