After an abysmal hunt at an old house yesterday (anyone need any antique plumbing parts?) , I hiked it over to a very active soccer field. My timing was perfect, just as I arrived, the games were ending on most of the fields, and I had them to all myself. For starters, even though I played soccer in high school, I never realized how big a soccer field was until I went to MD one . I only had three hours of daylight to go, needless to say I didn't cover as much as I'd liked to have, I barely finished a third of one soccer field, but it was enough to get a feel for the 10" concentric coil.
First off the 10" BH Magnum coil is super light, no heavier then the DD stock F4 coil, and probably lighter actually. I have a Coinstrike with a 10.5" coil, and it's a heavy coil, but not the Magnum.
The coil is really a good choice for sports fields, light, able to cover ground quickly, and for the most part the pinpointing was really precise (although I did hit a snafu, more on that later). One thing that I did notice today that I thought was interesting was that the coil choice seems to affects the TID tones (meaning depending on the coil, high coin tones, didn't always sound off as high tones on some coils and did on others, odd). Like the 8" concentric, the 10" also stumbles on zinc (TID's all over). This park isn't an old park, it was built in 1976, so I wasn't expecting to find anything too deep, but several of the coins I found were in the 6" range. I also found a local soccer pin, and one from Argentina, no jewelery this time, but I suspect this park could be a good jewelery producer if one was persisent, it certainly has the right make up IMHO.
Towards the end of my hunt, I decided to "tweak" the ground balance to see how it affected pinpointing. For some odd reason, it was all down hill from here. A lot of false signals, and it had trouble pinpointing. Now I could understand pinpointing not being accurate if the GB was off, as it affects this mode, yet I'm not sure why it would throw off the discriminate mode as it's supposed to have a fixed GB in disc mode.
Today I'm finally getting to hunt a spot that has the potential to have older coins, so I'll see how the Magnum coil does there if it's not too trashy.
First off the 10" BH Magnum coil is super light, no heavier then the DD stock F4 coil, and probably lighter actually. I have a Coinstrike with a 10.5" coil, and it's a heavy coil, but not the Magnum.
The coil is really a good choice for sports fields, light, able to cover ground quickly, and for the most part the pinpointing was really precise (although I did hit a snafu, more on that later). One thing that I did notice today that I thought was interesting was that the coil choice seems to affects the TID tones (meaning depending on the coil, high coin tones, didn't always sound off as high tones on some coils and did on others, odd). Like the 8" concentric, the 10" also stumbles on zinc (TID's all over). This park isn't an old park, it was built in 1976, so I wasn't expecting to find anything too deep, but several of the coins I found were in the 6" range. I also found a local soccer pin, and one from Argentina, no jewelery this time, but I suspect this park could be a good jewelery producer if one was persisent, it certainly has the right make up IMHO.
Towards the end of my hunt, I decided to "tweak" the ground balance to see how it affected pinpointing. For some odd reason, it was all down hill from here. A lot of false signals, and it had trouble pinpointing. Now I could understand pinpointing not being accurate if the GB was off, as it affects this mode, yet I'm not sure why it would throw off the discriminate mode as it's supposed to have a fixed GB in disc mode.
Today I'm finally getting to hunt a spot that has the potential to have older coins, so I'll see how the Magnum coil does there if it's not too trashy.
