earthmansurfer
01-01-2012, 03:54 PM
Markg over on another forum posted this:
The following is an example of the Etrac making a thunk sound instead of a regular high tone on a coin. This thunk sound is only noticeable when the target is getting close to the maximum detection distance from the coil. Even though this example is replicated in an air test, it sounds the same on a deep target in the ground. As the distance is shortened the sounds become sharper, clearer and more defined. Pay attention to the depth meter in relations to the sounds.
Etrac sounds (http://www.youtube.com/watch?v=jRmgWLqWLSU&feature=player_embedded#)
Now, not everyone has experienced this on targets at the end of the detection depth spectrum. I have seen this thunk on some deeper targets (8) and gotten a little bit of it on video. But I got a good signal after the E-Trac locked on.
Now on another forum Markg posted this:
Update:
Changing to pitch hold changes everything I posted this week.
The thunking has completely vanished regardless of distance from the coil or in the ground. Actually I believe I've gained from 1/2 to 1 inch more depth with pitch hold.
Please bear in mind, all other settings remaining the same, change from either normal, smooth or long to pitch hold and the thunk sound now is a consistent high tone (if you are in 4 tone) regardless of depth or distance from the coil.
Now, I know I've seen it mentioned somewhere (Maybe in Andy's book) that Pitch Hold is especially nice for deeper targets. Perhaps Mark is on to something here. I'm going to play with it if I come across any deeper targets or better yet start with it and then check back to normal and see if a fringe targets starts to thunk where as was good sounding in Pitch Hold.
So, two points here: Thunking and Pitch Hold
Something for us to think about and investigate,
Albert
ps - Have any of you guys been ignoring that thunking on deep targets? :->
The following is an example of the Etrac making a thunk sound instead of a regular high tone on a coin. This thunk sound is only noticeable when the target is getting close to the maximum detection distance from the coil. Even though this example is replicated in an air test, it sounds the same on a deep target in the ground. As the distance is shortened the sounds become sharper, clearer and more defined. Pay attention to the depth meter in relations to the sounds.
Etrac sounds (http://www.youtube.com/watch?v=jRmgWLqWLSU&feature=player_embedded#)
Now, not everyone has experienced this on targets at the end of the detection depth spectrum. I have seen this thunk on some deeper targets (8) and gotten a little bit of it on video. But I got a good signal after the E-Trac locked on.
Now on another forum Markg posted this:
Update:
Changing to pitch hold changes everything I posted this week.
The thunking has completely vanished regardless of distance from the coil or in the ground. Actually I believe I've gained from 1/2 to 1 inch more depth with pitch hold.
Please bear in mind, all other settings remaining the same, change from either normal, smooth or long to pitch hold and the thunk sound now is a consistent high tone (if you are in 4 tone) regardless of depth or distance from the coil.
Now, I know I've seen it mentioned somewhere (Maybe in Andy's book) that Pitch Hold is especially nice for deeper targets. Perhaps Mark is on to something here. I'm going to play with it if I come across any deeper targets or better yet start with it and then check back to normal and see if a fringe targets starts to thunk where as was good sounding in Pitch Hold.
So, two points here: Thunking and Pitch Hold
Something for us to think about and investigate,
Albert
ps - Have any of you guys been ignoring that thunking on deep targets? :->