I just traded for a Tejon and I put the lower Disc. in AM to GB and it is hard to set the threshold tone to barely audible. It's kind of hard to explain. When I bob the coil, all I can do is get about the same sound going down as up. Never a silence or no change going down and up. Is this normal??? Also the AM seems irratic. Sometimes I can't get it to calm down, it just howls like it is over a larger piece of metal. I can also hold it up in the air and turn in circles and it will sound off. Holding it straight out and twisting my wrist will cause it to make a noise. Should I be able to GB with the trigger pulled back also? That seems to work better. It just seems a little weird acting. Do you think I should get it tuned up??? What do you think? Shouldn't you be able to hunt in AM with just a slight threshold hum? Disc. seems to work fine. Thanks for any opinions or info.
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I've got a question for you Tejon people...
- Thread starter cspene
- Start date
rentasquid
New member
But as I mentioned recently(to another question), I never got mine to give a steady hum. It always oscillated. As for Gbing, I used the trigger method, and it worked best for me. I didnt hunt often in AM because I didnt care for the constant threshold sound. Your detector sounds slightly odd, but its hard to know what exactly you have checked and things of that sort...i.e. are the batteries fresh, is the coil and wire in good condition, are there any other hints of oddness, such as not sounding off over coins. Give a little bit more info. If you have checked these things, then it wouldnt hurt to send it off to Tesoro for a check up. They do it for free.
J.
J.
Greg (E.Tn)
Well-known member
A few weeks ago, I was digging in an area up in Virginia where I had the same things going on. Another thing my machine was doing that you didn't mention was giving off a short audible "beep" every time the toggle switch was pushed forward to Disc. II. I sent my machine in for a check up, but Tesoro couldn't find anything wrong with it.
The detector was acting erratically like yours, but whatever was causing it didn't affect depth, as I dug a Union eagle button at about 10", not counting about 2" of added leaf clutter and another 2" in coil height above the ground.
Yesterday, was digging here in East Tennessee and had trouble with the GB--couldn't get a threshold, and could not get the detector to Ground Balance properly, meaning as I lowered the coil to the ground, I would not get a steady loss or gain in tone, UNLESS I had the machine set well positive or negative. So what I did was frequently check the GB as often as possible.........
Well, I looked around and noticed that there was a cellphone tower about two hundred yards away--don't know if that was the culprit or not, but DID noticed that my machine seemed to stabilize the farther away I got from the tower.
All that being said, I think the issue is that the Tejon is set so sensitive, that some types of electrical interference confound attempts to GB the machine.
One thing you mentioned that I was not familiar with is Ground Balancing with the toggle pulled back. If that works better and is an acceptable method of getting a good Ground Balance, then I'll try that myself.
Thanks for the tip.
The detector was acting erratically like yours, but whatever was causing it didn't affect depth, as I dug a Union eagle button at about 10", not counting about 2" of added leaf clutter and another 2" in coil height above the ground.
Yesterday, was digging here in East Tennessee and had trouble with the GB--couldn't get a threshold, and could not get the detector to Ground Balance properly, meaning as I lowered the coil to the ground, I would not get a steady loss or gain in tone, UNLESS I had the machine set well positive or negative. So what I did was frequently check the GB as often as possible.........
Well, I looked around and noticed that there was a cellphone tower about two hundred yards away--don't know if that was the culprit or not, but DID noticed that my machine seemed to stabilize the farther away I got from the tower.
All that being said, I think the issue is that the Tejon is set so sensitive, that some types of electrical interference confound attempts to GB the machine.
One thing you mentioned that I was not familiar with is Ground Balancing with the toggle pulled back. If that works better and is an acceptable method of getting a good Ground Balance, then I'll try that myself.
Thanks for the tip.
doesn't GB that great. When I get a threshold and lower the coil, it gets loud right away, even with a negative GB to start with. I can only get it to give me a loud tone each way, up and down. I can't adjust the GB to keep a threshold that doesn't change much. I think I better send it in. What do you think?
I've got a Tejon also. I may not be reading your post right, but it sounds like you might be trying to set the thresh hold after ground balancing. You need to set the thresh hold first while the coils elevated to around waist high. And then go ahead and ground balance.
Ground balancing with the toggle pulled back is fine. I do it all the time while hunting, just to make sure the detector is still in tune with the soil. It's a good idea to do it fairly often while hunting. A little change in ground minerals can easily throw the balance off. In 20 feet your detector can go from being tuned to being out of tune due to mineral changes in the soil. HH
Ground balancing with the toggle pulled back is fine. I do it all the time while hunting, just to make sure the detector is still in tune with the soil. It's a good idea to do it fairly often while hunting. A little change in ground minerals can easily throw the balance off. In 20 feet your detector can go from being tuned to being out of tune due to mineral changes in the soil. HH
... You dont say what sort of hunting you do or where, but I have the Vaq, the same circuitry as the Tejon. I find the real challenge in GB'ing the instrument is just finding clean ground to GB over! Soil anomolies and of course, metal bits, make it darned near impossible to GB over what I would call "clean ground." I just find the spot with the least fluctuations, away from obvious metallic objects and GB there. I also agree with the comment that you may not have your THRESH set correctly prior to GB'ing
As The Squidster mentions, my threshold also oscillates with a whiny tone when set at the correct audio level - not loud, but just clearly heard. In fact, Ive accpeted that feature as normal, by now. This is a very fine adjustment, by the way, and you can go too far with it, real quick.
I marked my faceplate for the right spot and even a hairs movement from there and it is LOUD - or disappears entirely if it gets moved the other way. Great for SuperTuning, but not for normal hunting. On my Vaq, this mark is right at the "r" on the Tesoro logo on the faceplate label and I intend to get some small o-rings and firm up the THRESH control.
As for the osclllating whine, or seeming instability, Ive had other Tesoros that did the same, too. In fact since the uMax line hit, the overall "hotness" of the Tesoros is more pronounced. My first Tesoro was a SSII and when I got my first of several SS uMax'es, my first comment was,
"The smoothness is gone - this thing is hot!"
Sometimes the oscillating whine is a reaction to nearby EM interference, but it's mostly a factor of the hightened circuitry gain.
In fact, I read many posts that say the way to run these things is at MAX gain, 10 or more. Guess what I did? I stopped listening to others. In woods and fields, maybe that is so, but if you are a coinshooter or urban detectorist, you are just asking for trouble by doing so. You'll get better results if you back it off to between 5-7 and work it a little until you find the right point.
One more thing might help you is to get the smaller coil. This helps the detector to "see" less ground and may help some when it comes to GB'ing. Besides its a great addition to your detector set up and should be on yor Xmas wish list.
As The Squidster mentions, my threshold also oscillates with a whiny tone when set at the correct audio level - not loud, but just clearly heard. In fact, Ive accpeted that feature as normal, by now. This is a very fine adjustment, by the way, and you can go too far with it, real quick.
I marked my faceplate for the right spot and even a hairs movement from there and it is LOUD - or disappears entirely if it gets moved the other way. Great for SuperTuning, but not for normal hunting. On my Vaq, this mark is right at the "r" on the Tesoro logo on the faceplate label and I intend to get some small o-rings and firm up the THRESH control.
As for the osclllating whine, or seeming instability, Ive had other Tesoros that did the same, too. In fact since the uMax line hit, the overall "hotness" of the Tesoros is more pronounced. My first Tesoro was a SSII and when I got my first of several SS uMax'es, my first comment was,
"The smoothness is gone - this thing is hot!"
Sometimes the oscillating whine is a reaction to nearby EM interference, but it's mostly a factor of the hightened circuitry gain.
In fact, I read many posts that say the way to run these things is at MAX gain, 10 or more. Guess what I did? I stopped listening to others. In woods and fields, maybe that is so, but if you are a coinshooter or urban detectorist, you are just asking for trouble by doing so. You'll get better results if you back it off to between 5-7 and work it a little until you find the right point.
One more thing might help you is to get the smaller coil. This helps the detector to "see" less ground and may help some when it comes to GB'ing. Besides its a great addition to your detector set up and should be on yor Xmas wish list.
waterhunter
New member
They all seem to be a little unstable at threshold, but settles down some after a little - I dont even both to ground balance when hunting playground areas(new) and still get super depth - Ill both to ground balance only when Im somewhere I want extra depth,