AussieMatt,
Don't wish to hijack Reg Wilson's post
But as the owner of the first Production QED serial number 001
and the user that reported
"One user indicated he couldn't get to within 50m of powerlines with the QED or a GPX he had"
I thought I would join up here and at least answer that question for you.
So to clarify,
I was conducting head to head testing with my QED and my GPX 5000 on a private property near Orange, NSW, Australia.
Initially testing was performed looking for gold on the property, later in the day due to heat we packed up and went back towards the homestead, that is transversed by 500KVA high voltage transmission line towers.
Both my QED and my GPX 5000 were unusable within 50m of these transmission lines.
It should be noted that Mobile (Cell) phone, TV, radio and other electronics are also effected by these lines, and according to the property owner, the severity of interference is dictated by many factors, Weather, long periods of dry weather causes issues, as does fog, rain, and the condition of the insulators.
Also of note was the detexnix wireless used on my QED and my Mobile (cell) phone gave up well before the detectors.
“One user on AEGPF said he couldn't ground balance until he tried a NF 12 X 7 coil?”
I believe this issue was resolved via QED settings
I've not suffered any GB issues over some pretty nasty ground in Central Victoria.
but then I'm an old school techo, that's used to manual GB.
“SMF (6) set to”
My SMF was default at 050 and I use the supplied Ferrite on the coil lead of all my coils.
Cheers,
Mal