[size=large]Thanks Find' for the prompt reply.
As you have indicated, using 'other' frequencies may help to better resolve those iron pieces which invariably are problematic.
UK hunters primarily seek the thin sectioned hammered silver and gold coins, which by default implies using 18 KHz.
Now under those dictates, flat rusty iron and circular rings of the same material, produce positive audio responses.
Depending on depth and ground conditions ...dampness etc. the VDI can be in the 90's.
No amount of playing with the coil orientation seems to alleviate matters on large iron at depth.
'Using the tip of the coil' was an old adage of John Lynn's, (RIP dear friend).
He developed it for the XP Goldmax series, for id'ing shot gun cartridge ends.
Alas, the Deus version didn't appear to work for the many deep iron pieces located on last Sunday's outing.
I was field testing the CS6 MXi (17 KHz) in the company of two Deus's, and cross-checking all finds.
Big, deep, damp, rusty iron is a problem to ALL detectors.....even the magical E-Trac.
The punch line being.....single frequency mode in particular, has disadvantages as well as advantages.
To have to switch frequencies...is a chore.
So the dear V3i and E-Trac, despite their weight, are not dead and buried...
Their makers simply need to re-package them and learn the ever important criteria......
No matter how good your detector performs, someone has to swing it for several hours.
The DEUS has been available now for two years.......and the day of judgement has arrived for Luddite designers.
I am anticipating some rapid and welcome responses from my favourite manufacturers.
Fisher products are an elegant example of ergonomics, display, and battery economy.....they just need to provide a better selection of 'audio recovery adjustment'
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TheMarshall