Steve Herschbach Posted March 7 Author Share Posted March 7 17 hours ago, RickUK said: Not sure what the difference is between boost mode and cache mode,would have liked the cache but they never had them on offer but i am happy with what i have got....can anyone enlighten me what the cache mode advantage is if any ??? Per designer Dave Johnson: Posted by: Dave J. Date: September 24, 2015 08:59AM "Cache mode" on most F75 and T2 versions is very similar to "Slow mode" on the F70. The response is slow, with improved sensitivity to large deep targets. However this means that the signals from shallow targets will smear, with a cost in both sensitivity and in ability to discriminate and ID targets. Shallow targets will do better in cache/slow mode if you slow down to a crawl, but the default and boost modes work better for the shallower stuff. And, if you really do want best response on deep stuff, all metals mode goes deeper than disc mode. For finding the deep stuff, an alternative to Cache/Slow mode is to search in Boost mode all metals, then switch to disc when you suspect you're fighting trash. ........Another way to deal with shallower stuff is to search in Cache/Slow mode with the searchcoil lofted several inches above the ground. This will result in a big cut in response to shallow trash, but perhaps more importantly it will achieve a large reduction in ground mineral interference (since ground itself is the shallowest target) and in mineralized ground will usually enable deeper detection than if you were scrubbing the surface in a misguided attempt to "get as close as possible to the deep targets". SUMMARIZING: Cache/Slow mode is basically for locating large deep stuff in areas where there's not so much trash as to defeat the enterprise.” 3 Link to comment Share on other sites More sharing options...
Redneck Posted March 7 Share Posted March 7 I used an F70 back in the day for about a year. I replaced it with a Safari, and never went back to Fisher. Link to comment Share on other sites More sharing options...
wltdwiz Posted March 7 Share Posted March 7 i jumped its on its way yay was 1 of my favorite machines what a deal thanks steve for posting this Link to comment Share on other sites More sharing options...
RickUK Posted March 7 Share Posted March 7 47 minutes ago, Steve Herschbach said: Per designer Dave Johnson: Posted by: Dave J. Date: September 24, 2015 08:59AM "Cache mode" on most F75 and T2 versions is very similar to "Slow mode" on the F70. The response is slow, with improved sensitivity to large deep targets. However this means that the signals from shallow targets will smear, with a cost in both sensitivity and in ability to discriminate and ID targets. Shallow targets will do better in cache/slow mode if you slow down to a crawl, but the default and boost modes work better for the shallower stuff. And, if you really do want best response on deep stuff, all metals mode goes deeper than disc mode. For finding the deep stuff, an alternative to Cache/Slow mode is to search in Boost mode all metals, then switch to disc when you suspect you're fighting trash. ........Another way to deal with shallower stuff is to search in Cache/Slow mode with the searchcoil lofted several inches above the ground. This will result in a big cut in response to shallow trash, but perhaps more importantly it will achieve a large reduction in ground mineral interference (since ground itself is the shallowest target) and in mineralized ground will usually enable deeper detection than if you were scrubbing the surface in a misguided attempt to "get as close as possible to the deep targets". SUMMARIZING: Cache/Slow mode is basically for locating large deep stuff in areas where there's not so much trash as to defeat the enterprise.” @Numero uno,Steve,many thanks for that reply,that was the information that i needed.....thanks again. Link to comment Share on other sites More sharing options...
abcoin Posted March 27 Share Posted March 27 I picked up one of these F70s even though I already have an F75 (and a Deus 2, lol) just to see what it's capable of. As others have said, the all metal mode should be excellent. There's also a lot on the forums about its nuances, from Dave J's posts to Digger27's extensive experiments and experiences. I've only gotten out one time with it so far but it found me some three-ringers at a place I'd gone over with more expensive machines. For $199, it's fun to pick one up and see just how it stacks up to machines that cost several times more. 2 Link to comment Share on other sites More sharing options...
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