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Did some detailed work in my test garden yesterday using theTDI Sl.First results are verypromising.Settings were, pulse delay10, ground balance 7 ½, gain max threshold just audible.
I have a copper rivet buried at 7” about the size of the endof a pencil eraser a 6 ½” quarter, dime, nickel and penny along with each at 4½” deep in a different part of the test bed.In addition to these I purposely left nails where they were when Iplanted the garden over 7 years ago.Please keep in mind these were the depths when I put them in the ground,so the exact depth is not known after 7 years.
Starting off in high conductor mode each (except thenickels) gave a very good, smooth audio in every direction except the nailswhich gave a completely different sound, very much different.Keep in mind I’m still in a steep learningcurve, by no means close to experienced but having a fantastic time on myjourney.
After listening to the differences between the coins andnails I reduced the gain to about half and listen to each target again.I continued reducing the gain little bylittle until the deep coins and rivet ceased giving a audio response and thatwas about gain 3 ½.Raising the gainback to 4 and the coins gave a very faint, low volume tone.
Wanting to play a little I raised the pulse rate, re-groundbalanced and checked each target with a gain setting of 6.The biggest difference came when the pulserate was set above 20.The coins still gavea good audio, but the rivet, which is very small compared to the coins, becamedifficult to hear, very statically, extremely low in volume.All in all I had a very enjoyable evening,very educational.
More to come..........
Mark Gillespie
I have a copper rivet buried at 7” about the size of the endof a pencil eraser a 6 ½” quarter, dime, nickel and penny along with each at 4½” deep in a different part of the test bed.In addition to these I purposely left nails where they were when Iplanted the garden over 7 years ago.Please keep in mind these were the depths when I put them in the ground,so the exact depth is not known after 7 years.
Starting off in high conductor mode each (except thenickels) gave a very good, smooth audio in every direction except the nailswhich gave a completely different sound, very much different.Keep in mind I’m still in a steep learningcurve, by no means close to experienced but having a fantastic time on myjourney.
After listening to the differences between the coins andnails I reduced the gain to about half and listen to each target again.I continued reducing the gain little bylittle until the deep coins and rivet ceased giving a audio response and thatwas about gain 3 ½.Raising the gainback to 4 and the coins gave a very faint, low volume tone.
Wanting to play a little I raised the pulse rate, re-groundbalanced and checked each target with a gain setting of 6.The biggest difference came when the pulserate was set above 20.The coins still gavea good audio, but the rivet, which is very small compared to the coins, becamedifficult to hear, very statically, extremely low in volume.All in all I had a very enjoyable evening,very educational.
More to come..........
Mark Gillespie