Unless you're a "dig-it-all" hunter then multi-tone is a nice feature. The key to any hunter who doesn't dig it all is to get as much information from a target before you make the decision to recover or leave it. Multi-Tone is more information than 3-4 tones. Multi-tone can give you a much better picture of the target. On the multi-tone detectors I've used being able to hear false iron signals is easier. They give that very high pitch tone that silver doesn't. The well know "silver warble" comes from having multi-tones. Full-tone on the Deus works a lot the same way. More info without having to look at the display.
Some good info,,,but most detectors,,, tone provided is tied to Vdi--- and with deeper targets,,this Vdi may be high or low depending on the detector,,,would be hard to just listen to the tone,,and know when you had a deep coin based solely on tone frequency--- now using modulation might indeed help here-- although I'm not fond of using modulation.
Sure for shallower targets-- having blocks of Vdi with tones assigned would help.
Now,, multi tone with etrac--- it works,, but it being able to have correct TID at both shallo and deeper depths is the reason it works so well.
Deus, multi tone works on it with shallower and deeper targets--- but on deeper targets,, remember Deus unusual,, as it usually throws vdi/TID to 90s range-- and this will provide high tone using 2, e, 4, or 5 tones as long as you have the 90 plus range assigned a high tone freq wise
Full tones--- basically the 90s plus are automatically assigned high/ highest tone,,so on deeper targets--- high/ highest tone is heard.
An example,, let's say wheat head comes in at 78 on White's V3i,, and we have a tone set for the following vids,,,73-80. So yes shallower wheats most of the time would show this 78 reading give or take and provide the tone assigned,,, but if you hit a 9" wheat, and let's say you don't flush it with the coil,,,what could it read??? Generally my experiences I say low,,so if the wheat read lower than 73-- you wouldn't get the tone you had assinged--- so not looking at the screen and only going by sound/ tone-- op would keep walking,,, and even if a person stooped to investigate the usual Vdi provided with associated tone,, and even if they flushed the 9" deep wheat, with multiple sweeps-- no guarantee the wheat would ever read higher than 73-- actually the deep,wheat may read at least 73 on some sweeps, and lower on others
So with a V3i detector-- and there are many others--- a deep coin hunter who is hunting by sound/ tone freq alone--is IMO missing some good deep coins.
And Minelab etrac and CTX users will most of the time-- not guaranteed ,, hear the high tone signal or high tone chirp--- and when sweeping looking at the meter-- will usually get a pretty good readout,, giving hint of high conductor.
I guarantee--- take 2 pros each a pro with their respective detector,, one a V3i and the other an Etrac,,, tape the screens up,, let both hunt by sound alone and compare signals,, and record what they think the target is, low , med or high conductor,,, go to an old park and spend the day,,, grade the targets each one finds and compares privately report to the third party (digger). With a third party actually digging the targets and recording.
At the end of the hunt--- I'll bet the farm the etrac user wins hands down.
Milder ground would help the V3i user to a degree,, but in F75 4 bars ground-- etrac would kick butt.
And btw-- the way Deus reports tone(s) it would lose too.
And I should add,, the above mention,, this is why a lot of silver coins and older deeper copper were still in the parks before minelabs made their debut.
Folks were being fooled,,using typical Vlf detector,, and remember in a park scenario., folks didn't want to dig unnecessary holes--- they could in fact get tone on a lot of these coins and Vdi-- but nowhere near accurate enough to have a very good idea what was beneath their coil,, coin wise I e high conductor coin..
Now some of the coins were out of range depth wise,, for some detectors.
To me detecting is a lot like fishing. You can buy a cane pole and fish from the bank or you can go whole hog and spend thousands on a boat and high dollar rods, reels and stuff. You will catch fish either way. It is a hobby do it the way you enjoy it the most.
You really dont need your eyes for this...except to drive over there of course!
