Update:
It now looks like the coil will not be with me before the end of Jan - mid Feb. Hopefully, by that time covid restrictions will be lifted to allow travel but my feeling is we will still be...
A concentric coil is made up of a large outer coil and a smaller inner coil. I know most will know this but just in case I thought it best to make it clear.
Am expecting to receive this coil...
Been using the GPX (Both 4500 and 5000) regularly since Feb 2012 and detecting more years than I care to remember.
My VLFs are the Nexus MP MK II, Nautilus DMC-IIB & Equinox 800. As well as the GPX pulse induction detectors I also use the Whites TDI Pro.
Interests:
Play Fiddle (badly) and English Concertina (not quite so badly).
Main Detectors:
GPX-5000/4500, Whites TDI Pro, Nexus MP MkII, Nautilus DMC-IIB. All 'deep seekers' and Equinox 800.