Mike Hillis
Well-known member
The F5 with the 11" Triangulated (teardrop) Concentric coil is a great combination, and the Pro Star headphones match it perfectly.
I have become a big fan of the Pro Star headphones. To set them up, I put the F5 in all metal mode, turn my good ear off, and adjust my bad ear to the threshold hum first, then tune in my good ear and I'm back to hearing in stereo. Then switch to Disc mode and I'm good to go, hearing wise. The Pro Stars work great with the F5 high conductive high tones in the multi-audio modes.
I ran the F5 in 3 tone and 4 tone modes with the 11" Triangulated concentric coil a couple of hours Sunday morning and I can say this is a coin hunter's combination. You can tell the coins from iron falsing by the audio characteristics. And the occasional EMI high tone falsing sounds different too so once you get used to it you do less second checking. I attribute some of this to the headphones but the coil attributes come into play as well.
At this location at this time of morning I was able to run this large coil with the Gain on 85 and the threshold on +6. I was easily digging coins resting on the base dirt down to about 6" to 7". I'll have to try it in some area's where the dirt is deeper. To explain this statement, here, in order to grow grass, we bring in fill dirt and spread it on top of the alluvial, granite gravel fans, and then lay sod on it. Nothing sinks into the granite gravel below this fill dirt layer and I rarely find anything buried in that outside of a flattened can that got buried during dirt moving operations.
But down at the river I can get into better dirt and get in some deeper ground, in fact that sounds exactly what I'm going to do next week, the good Lord willing.
Anyway....my quarter collection grew by four dollars Sunday morning with this setup and I was pleased with it as a coin hunter.
Not so pleased with the 11" triangulated coil as a jewelry hunter, though. It exhibited less sensitivity to smaller low conductors than the stock 10" elliptical concentric coil. So while I was quite pleased with it for hunting high conductors, and feel it would be ok for most yellow gold rings, it wouldn't be my pick for focused jewelry hunting.
Balance was ok. It felt a little lighter than the 11" DD coil.
I came home happy, but again, I always come home happy when I swing the F5.
Mike
I have become a big fan of the Pro Star headphones. To set them up, I put the F5 in all metal mode, turn my good ear off, and adjust my bad ear to the threshold hum first, then tune in my good ear and I'm back to hearing in stereo. Then switch to Disc mode and I'm good to go, hearing wise. The Pro Stars work great with the F5 high conductive high tones in the multi-audio modes.
I ran the F5 in 3 tone and 4 tone modes with the 11" Triangulated concentric coil a couple of hours Sunday morning and I can say this is a coin hunter's combination. You can tell the coins from iron falsing by the audio characteristics. And the occasional EMI high tone falsing sounds different too so once you get used to it you do less second checking. I attribute some of this to the headphones but the coil attributes come into play as well.
At this location at this time of morning I was able to run this large coil with the Gain on 85 and the threshold on +6. I was easily digging coins resting on the base dirt down to about 6" to 7". I'll have to try it in some area's where the dirt is deeper. To explain this statement, here, in order to grow grass, we bring in fill dirt and spread it on top of the alluvial, granite gravel fans, and then lay sod on it. Nothing sinks into the granite gravel below this fill dirt layer and I rarely find anything buried in that outside of a flattened can that got buried during dirt moving operations.
But down at the river I can get into better dirt and get in some deeper ground, in fact that sounds exactly what I'm going to do next week, the good Lord willing.
Anyway....my quarter collection grew by four dollars Sunday morning with this setup and I was pleased with it as a coin hunter.
Not so pleased with the 11" triangulated coil as a jewelry hunter, though. It exhibited less sensitivity to smaller low conductors than the stock 10" elliptical concentric coil. So while I was quite pleased with it for hunting high conductors, and feel it would be ok for most yellow gold rings, it wouldn't be my pick for focused jewelry hunting.
Balance was ok. It felt a little lighter than the 11" DD coil.
I came home happy, but again, I always come home happy when I swing the F5.
Mike