Coins in iron II - Intensity & Base Threshold

[earthmansurfer]

Hey all,

I got out for a few hours today and got three targets on video while playing around with the base threshold under intensity from 65 - 90 (and then I was rained on. ehehe). I was curious to find out if a BT of 65 would help to visually unmask targets in iron - I say visually because the BT setting should not affect sound. I didn't find that to be the case and as you'll see, the targets were not good clean hits. If anything, this video is more about working in iron (again) but I did play with the BT setting a lot.

It would be nice to know what you all think about the setting adjustments with base threshold and working in iron - both from the video and in your personal experiences. I'm still learning the machine and a video is a great way to do so. I've learned a lot myself from sharing here. While watching, I've found it really really helps to watch the spectragraph and VDI's as they are zipping by. I make some comments along the way to assist. (I want to make these videos better so feel free to put your suggestions here.)

I edited the videos down, so it's just over 6 minutes long. I tried to scan the target many times and from 2 angles.

Enjoy,
EMS

ps - I recommend watching the video on Youtube in 480 as you'll be able to see the screen better.
pss - This whole video was really inspired by Shadow on another forum who mentioned to me that he went back through an area he had hunted hard with BT at 90, but changed BT to 65 and pulled quite a few more coins. So, my testing is not finished as it worked for Shadow!

[video]http://www.youtube.com/watch?v=thXVLhUqsGQ[/video]

 

[Rob (IL)]

90 is not the base threshold in all programs. 65 is the default for high pro. A lower BT will always give a more cluttered screen because you are allowing more of the weaker signals to be seen. 65 would show a weak, deep target that 90 wouldn't. More information equals more going on on the screen. Same for resolution fewer fatter bars is less clutter than more thinner bars.

 

[earthmansurfer]

I hadn't thought of it as helping with depth but that is GREAT to know. I know about 65 and high pro. I read that Bob (is it?) did that to help in ID'ing bottle caps. But when I hit a cleaner area then running BT at 65, or there abouts, might be a good idea. But it did help one user with unmasking, and since most of my targets are less than 6" I thought to test it in that regards.

I haven't played with resolution more than for 2 minutes but perhaps I should adjust that along with BT and see how it works out.

Thx for the ideas.

 

[Rob (IL)]

Bob wants all the info he can get, hence lower BT number and a higher resolution. Fox on the other hand goes for a uncluttered screen, BT 90, resolution 7, consistency. Use what works. Also Bob runs his Hi Pro in Stereo mixed mode which would be too much in your ground I would think.

I don't like the consistency and it takes to long for the bars to build up for me.

 

[earthmansurfer]

Bob wants all the info he can get, hence lower BT number and a higher resolution. Fox on the other hand goes for a uncluttered screen, BT 90, resolution 7, consistency. Use what works. Also Bob runs his Hi Pro in Stereo mixed mode which would be too much in your ground I would think.

I don't like the consistency and it takes to long for the bars to build up for me.

Thanks again, just a note on consistency. I stopped running it for the same reason but yesterday I dropped the setting to 6 or something like that. The bars built height much quicker. I don't think I need it though as I don't have problems with foil - that is where it excels imo. I don't understand one thing about it though. Fox said that he can run his machine hotter with it in consistency as opposed to intensity. He never followed that up. Any ideas?

Did you (or anyone) ever play with resolution, I'm curious as to it's advantages/disadvantages at other settings?

I love stereo mixed mode as I learned on a Nautilus but you hit the nail on the head. It would knock me out with the iron here. But when I find a spot to run it I sure will.

 

[Rob (IL)]

The lower resolution number gives you more information. Most of the programs run 7. That means one bar is 7 VDI wide. Now to go to the ridiculous a setting of 1 and each vdi would have it's own thin bar. Bob uses 4 in his high pro. The mixed mode uses 3.

Lets say you are trying to determine if a target is a nickel and a tab. The two patterns will look a bit more varied (there will be more difference) with more thinner lines than if the you used 7.
I like 4 or 5 and BT 65 or 70. Basically the high pro settings. In bigger park areas with some space between targets I also like the Stereo mixed mode.