I adjusted the disc mode pre-set ground balance trimmer pot

[jabbo]

Quote: "If you had a ground control fitted to the disc circuit and it wasn't set right then it would affect the meter readings". Would the standard bobbing method be good enough to get it set right? Or would you need to throw a coin on the ground and adjust the knob till you get an accurate meter reading.

 

[davidbat40]

jabbo
rang uk repair center this morning gb for my am mode on the HAWKEYE/DELEON can be done
asked can gb be done for disc mode on cortes/hawkeye/deleon explained that with no threshold tone in disc mode how can you set it
regarding them wires on my hawkeye i need to get a on/off/on switch then solder it on it migth give me notch mode

 

[SkiWhiz]

This will probably make alot of people laugh and hope it don't give Monte any heart problems hearing this but my way of thinking is that ground balance is like headphones, way over rated. I have had a number of different Tesoros and other brands over the years some with & some without manual adjust ground balance, and I didn't noticed any difference in performance, depth,sensitivity,etc. in them. Maybe my ground is ok for a preset and/or a manual adjust ground balance machine I don't know. Steve.

 

[JB(MS)]

It darn near got me. Seriously, if you can't tell any difference between preset and manually ground balanced detectors then you have ground that is ideal for preset detectors. My problem with preset ground balanced detectors is just the opposite of most in that the soil here is virtually mineral free. As a result preset detectors come ground balanced way too positive. I bought, sold and traded used detectors for about 15 years and as a result have had a lot of preset, manual and auto ground balanced detectors. Only one preset wasn't balanced way too positive, a Gold Mountain King Cobra that was actually balanced negative, and only one auto balance detector, a Tesoro LST, that didn't balance at least a little too positive and that was only in all metal mode as it has preset balance in disc mode. Some, including the Golden

 

[SkiWhiz]

It darn near got me. Seriously, if you can't tell any difference between preset and manually ground balanced detectors then you have ground that is ideal for preset detectors. My problem with preset ground balanced detectors is just the opposite of most in that the soil here is virtually mineral free. As a result preset detectors come ground balanced way too positive. I bought, sold and traded used detectors for about 15 years and as a result have had a lot of preset, manual and auto ground balanced detectors. Only one preset wasn't balanced way too positive, a Gold Mountain King Cobra that was actually balanced negative, and only one auto balance detector, a Tesoro LST, that didn't balance at least a little too positive and that was only in all metal mode as it has preset balance in disc mode. Some, including the Golden

 

[Geko]

Well... if no one is willing to give more details on the ground balancing procedure, please at least share how you judge the GB in Disc mode without a threshold tone...

 

[davidbat40]

GEKO thats the whole point gb in disc mode can not be done gb for notch can not be done or sum mode
gb for am yes
never haveing a detector with gb i do not know what my hawkeye will be like with gb fittered on am mode waiting to get a 3.5 turn pot that will fit inside machine and a on/off/on switch to see if notch node works

 

[Geko]

You are not following the topic. It can be done via the internal trimmer. My question is for Monte.

 

[akille68]

I would like to revive this 3d.
I think that if You think about power balancing you can understand how to ground balance in silent discrimination mode. Problem is that this could influence meter readings....so, last word is?

 

[jabbo]

akille68, Can't figure out what you're saying.

 

[akille68]

akille68, Can't figure out what you're saying.

I beg Your pardon for my bad english. I mean that there is a method to ground balance our tesoros in discr. mode (that has not threshold). Your turn counter clockwise You gb knob while pumping coil up-down, until your hear some chirps and false signals. Then you turn ground balance pot just a bit clockwise till false signals stop. This method is called "Power balancing" by Monte. There is a 3d somewhere.
So my conclusion is. It is not true that You cannot gb in discr. mode. Problem is that (in Cortes model) playing with discr. mode You will put "off balance" meter id capabilities.
All the best.
Ale

 

[akille68]

Jabbo,
Here is the link:
http://www.findmall.com/read.php?17,1052852,page=1

 

[Tfor2]

I worked with both trimmers and could not get any decent balance, ID system was still off. So I reset the trimmers back to where they originally were, detector is working as it was before. All Metal mode gets the 7" dime, but Disc mode gives only a tic at times.

Hum, that's really interesting. So you're saying in discrimination mode the Cortes only gets a CLEAR signal on a dime at 6 inches deep? That sounds a lot like the Silver uMax with 8" donut coil.

Lots of guys claim depths by coin garden tests but often they're totally misleading. In the coin garden one knows the target is there and often guys repeatedly swing the coil over the known spot until the signal builds up from almost nothing. Then they say "I got a good solid signal at ....whatever.

The way I test is I move briskly over my coin garden swinging like I would at a real site. I do make sure I go over the spots where the coins are planted but many times the machines I test get no signal even on those quarters only 6 inches deep. But the same machines will get maybe 9 inches if I force a signal by short super fast unnatural swings allowing the target signal to build. This kind of test means nothing.

To do a real life check one needs to go by signals one would normally bother with in the field.