Depht Issues

[drsmithtft]

My Cibola does not seem to be getting as deep as it used to. Not digging many deep targets or seem to be finding as much. Tried to air test it and seemed to average about4"- 6" or so on several coins. Does this seem right? Maybe I need to try it in a new spot or something.

 

[Jerry Ga.]

No, that does not seem right. I get 12 inches on a quarter,( air test) in the house with all the electrical interference going on. You may want to send it in for a checkup.

 

[marcomo]

Yep, send it in. Call Christy at Tesoro, shell give you instructions for sending it in and she's great to deal with. But then again, pretty much everybody at Tesoro is.

Make sure you send the control housing and the coil so they can retune your coil to the detector.

 

[bhcarl]

I just did an air test with my Vaq and Deleon, 5" with vaq. and 6" with the deleon, maybe mine needs to go back also, this was measured with a quarter taped to a yardstick.

 

[lurksalot]

n/t

 

[tvr]

You don't say what your settings are. They can make a large difference in air tests.

Get away from metal, take it outside, set it up on a wood chair or cardboard box or plastic trash can. Then measure with a wooden yard stick or mark off a piece of cardboard with measurements. You need to be swinging the test coin at the center of the coil to get the peak of the detection cone and not be off center or near the edges.

Set threshold so it is just audible when you push the pinpoint. Then in discriminate mode, set the discriminator at iron and sensitivity at 10 (but not into the red) Cibola should be right around 7 to 7.25 inches on a clad quarter, about 1/4 inch less on a dime and about 8 inches on a nickle.

If you max the sensitivity (full clockwise at the end of the red) while keeping the threshold just audible it should get about 11 inches on a clad quarter and 12 inches on a nickle. If you fully super tune it with discrimination at iron; about 12 inches on a quarter and 13 inches on a nickle.

If it falls well short, call the good folks at the factory and send it in to get fixed.
tvr

 

[Brokensignal]

drsmithtft make sure after you set the disc control to set the threshold all the way fully clockwise,it will get more depth.(Read the manual under super tuning).I am sure the cibola you can super tune. The tejon is factory super tuned which can not be super tuned.

 

[Neil]

My Cibola does not seem to be getting as deep as it used to. Not digging many deep targets or seem to be finding as much. Tried to air test it and seemed to average about4"- 6" or so on several coins. Does this seem right? Maybe I need to try it in a new spot or something.

How long have you been hunting with it and what were your air test readings from before, what your comparing it to now I mean. I dont think they loose depth over time, could be wrong, but maybe check your battery as one guy said or perhaps it was supertuned before like tvr says.

Neil

 

[marcomo]

Thank you lurksalot, for reminding me...

Always try new batteries first!

 

[D&P-OR]

Checking batteries first and makeing sure they are good is very good advice.---I've had a bad battery or two that came out of a brand new pack, and a bad battery can do all kinds of "goofy" things to a metal detector.---I remember Charles Garrett once said that they had different detectors sent in for repair with the owner thinking this or that was wrong with them.---All in the world that was wrong was that the detector needed new, strong batteries.---I used to test all my new batteries before I ever put them in my detectors--haven't been doing it lately but I should.--------Del

 

[bhcarl]

Put new battery in the vaq. and followed tvr's instructions and got very close to the dimensions that he gave, I quess my old battery was a little weaker than I thought, thanks.

 

[tvr]

I can not take credit for the test settings and depths. Sven has posted a more complete list of settings and air test results on his web page. I have tested at some settings with my Cibola and Tejon and with both detectors, my results track to Sven's measurements when set like he documented.

So thank you Sven.

He is posting more over on the metal detecting forum than in this Tesoro forum now. In his signature block is a link to his web page where he links to the more detailed tests he did.

Glad a new battery helped.
tvr