9” HF Round Versus 5” X 9” Elliptical

[EL NINO77]

Mike ... it will also depend on where you detect .... if you are in the US ,, on US size coins so I could be a coil 9 "X35 3.7 khz-28khz ,,, if you are from another part world and you are detecting significantly smaller hammerred coins so I would choose a 9 "HF 13khz-58 khz coil ...

These 9 "round coils have a really good 2D and 3D 360 degree separation..and a very good depth ..

5x9.5 "ellipse HF-13khz-80khz is a bit less deep, so it has and less good 3D separation .... but it can excel in 2D separation and as in certain positions of iron and coins in deep separation ..

[Mike K]

Thanks I'm on the US in Ohio so I'll have to look around and see if where I can find one of the 9" X35s. Maybe one day I'll be able to go over and hunt for some hammered silver.

[Chase Goldman]

23 hours ago, Mike K said:

So I'm not looking for depth just a coil that will benefit me when hunting in an iron infested areas. So from what I have seen from these posts the 9" X35 would be the choice....

Actually, in that case, the 9.5 x 5 would be my choice, unless you need the lower x35 frequencies.  The extra 2 inches of clearance isn't going to buy you much if the iron is really thick.  FWIW.

[detectorguy]

XP Hf 9x5 coil is the most incredible coil out there.

I went out with our club today with the use of the xp deus and the 9x5 coil. I got a squeak of a signal, no VDI or depth indicator, but was repeatable. I asked another club member to come over as he had a 11 inch coil on his machine, but he could not hear it. I again went over and found the repeatable signal, dug down 1 foot deep, could find it with my pin-pointer, and with his in the hole after digging one foot deep.

After a few more tries with the shovel I gave up on the target.

I do not know what the target was, but it was a repeatable high toned signal on the xp deus.

[Chase Goldman]

7 hours ago, detectorguy said:

XP Hf 9x5 coil is the most incredible coil out there.

I really like the 9x5, but frankly it is hard to come to any solid conclusions regarding performance in this situation since you never recovered the target nor provided information on how both machines were set up.  Likely big, rusting iron or a buried pipe/wire based on your description - perhaps high falsing ferrous with a halo.

Regarding the comparison with the 11", were you both running the same settings, especially sensitivity, disc, frequency, reactivity/silencer, etc?  Otherwise, you are really not comparing apples to apples. What were your settings and the soil conditions?  Did you ever get an ID once you got down a foot?

9x5 has better depth than you would expect, but not a foot plus (at least not for a coin sized target in normal dirt) and it generally is not going to go deeper than the 11" under identical conditions and settings.  It might outperform the 11" on shallower micro targets, though.   

[detectorguy]

I did go back to the target in question and after digging a little deeper in hard pan I found a smashed aluminum can that had given me the signal.

[brys]

using the 9 oval on a plowed field it seeme to zero in on tiny pieces of metal in the higher hertz of 30 74,wasted a lot of time digging tiny metal fragments

[palzynski]

7 minutes ago, brys said:

using the 9 oval on a plowed field it seeme to zero in on tiny pieces of metal in the higher hertz of 30 74,wasted a lot of time digging tiny metal fragments

This is normal the Deus HF coils have been designed to pick up tiny targets like very small coins ( down to 0.5g )  that we are frequent over here in Europe. I agree that it may be different with the US bigger coins .

I will post more details on the elliptical because I received it a few days ago and I already did an outing with it .  I have the round HF coil since several years now ...

[brys]

at a rally gary mentions a guy with an oval HF coil doing very welll on hammered coins 3 he found and maybe more