Tejon air test

[kaolinwasher]

Just got a new Tejon and did an air test . set at 10 gain, I can run this machine past the red with no falsing, but kept it at 10 for the test seems like it does good to about 7 to 9 " with a slow sweep , [video]https://www.youtube.com/watch?v=u5mJtqJpl1U[/video]

 

[Rick N. MI]

Mine power balanced hits a 9" test dime with the 9x8.

I notice depth wasn't affected when I lowered sensitivity down to around 3 or 4 And it ran smoother thru the trash. Check yours and see if you notice any difference in depth as you lower sensitivity.

Rick

 

[Monte]

since you mainly used a slow-to-moderate sweep speed motion. I honestly wish you would have NOT also added those overly-quick test sweeps you did because that's what most folks do in an 'air test,' then they wonder why they can't achieve those results afield. The Tesoro 2-filter analog circuitry is at its best with a slow, to sometimes moderate, sweep speed. Use of a brisk sweep in the field can often result in a loss of depth or even a loss of any good target response because it's forcing too much ground signal to be processed, and that's even more critical if hunting in very mineralized ground environments, especially black sand, pea gravel and rocks, etc.

Just got a new Tejon and did an air test . set at 10 gain, I can run this machine past the red with no falsing, but kept it at 10 for the test seems like it does good to about 7 to 9 " with a slow sweep ,

However, the first part was sort of clipped, and I listened several times, and couldn't hear the Disc. 1 setting you used, and I never heard mention what the Disc. 2 setting was.

Personally, I have no use for the dual Disc. system, and I don't like to "thumb" a Discriminate control or try to work in a notch or secondary rejection point. If I reject anything it will only be the annoying iron nails and lessor iron, and I'll investigate all iffy or good beeps above that. The detector can not 'Discriminate' as well as my eyes can to know what I consider to be a good or bad target. On the Tejón's I had, I set the Disc. 1 to adjust for the All Metal mode with a proper Threshold audio and Ground Balance, then I would use the Alternate Disc. [size=small](Disc. 2)[/size] as my primary Discriminate search mode set to either accept all I could, or reject no more than Iron Nails.

So, I used my Tejón's with a set-up to work the same way I hunted with my Bandido's or Eldorado, often searching some sites in the Threshold-based All Metal mode and checking in Discrimination, or just the reverse. I will say that I liked the Tejón color scheme over the multi-hued gold rods and brown control housings, and I also liked the use of AA batteries instead of 9-V batteries, but the Tejón appeal, for me, ended there.

It didn't do that much more than what my Bandido, Bandido II or Bandido II µMAX models provided, and my Eldorado would match or better the Tejón detection depth. I had 3 Tejón models to compare and one was just terrible, but the other two, in side-by-side comparisons with located and still buried coins, the Eldorado I had matched or bettered them depth wise. Each was using their own 8X9 Concentric coil, so coil sizes and type were a match.

So, for me, I really had no use for the dual Discrimination system and let the Tejón's go. The ONLY thing I missed and liked best of all about the Tejón ... and wish it was incorporated in a new top-end model ... was the variable Tone control to select a VCO audio or adjust for an operating audio frequency/pitch that worked best for my hearing and the headphones I used.

Anyway, good sweep speed use in the video, nice to point the sweep speed out to people, but I was curious what the specific Disc. settings were. Not a dot, number or name reference because that can vary unit-to-unit, but what sample target you used to set the rejection point in the two Discriminate modes. That's the important determination.

Thanks,

Monte

 

[Sven]

I'm in agreement with Monte, the thing I like about the Tejon was the switchable VCO to adjust the tone frequency.

I do honest air tests for my own reference, doesn't pay to lie to yourself.

I have it posted here. This was the last Tejon I owned back in 2008.
In the mineralized soils around Atlanta, GA, I was not impressed with its performance, after about a month got rid of it.
At the time I was also planning on the move to Canada, so I air tested CA coinage.

 

[John (Ma)]

Congrats on the new Tejon and great write ups. I like the dual discrimination as I will run low on the primary and check with a higher discrimination to guage what it may be and pending where I am hunting. Just my preference

 

[homebre]

Congratulations!! Have great hunting and lots of fun.
Andy

 

[kaolinwasher]

Monte , in ground i can not sweep fast on my 6" caldd dime i will lose it , ground hear is full of magnetite black sand and combine that with a concentric and you will lose some depth , Rick how do you power balance your Tejon ? I took the t out today to a park set the threshold to a very low humm ground balanced neutral and set the gain with no chatter disc one was to knock out Iron , disc 2 was to knock out foil and i held the trigger back to hunt in threshold all metal i found a I,d ed several big Iron abjects and did not dig them but it hit hard on coins and tabs i could tell foils , very well i really like what it can tell you . I was disappointed with its depth as i had a bliss v3 and it could hit a 8" dime like the T hits a 4" dime and 10" deep on a dime was no problem for the bliss or a 14" deep quarter but still I like the T as its very strong on small things , hits my gold nugget at 3.5" and thats good I don't expect much from the 8x9 as this ground is mineralized , saving for a DD

 

[Rick N. MI]

I don't think I power balance in black sand and would use a wide scan coil there.

My ground is very mild/

Rick

 

[kaolinwasher]

Rick I tried power balancing the TJN and now can easily hit the 7" dime in disc amazing , of course this renders the all metal unusable until its grounded neutral again, and i am not talking some wimpy signal its both ways and with the coil off the ground2" thanks for the tip . and i also set up the machine to use the slow all metal but it must be balanced neutral and with a low threshold nickel at 14" if that will not find some deep relics I don't know what will .

 

[Rick N. MI]

Power balancing is thanks to Monte who has been doing that for awhile. And you're right it messes up your all metal & pinpoint.

Rick

 

[Monte]

Just my opinions, all based on over half a century of metal detecting and doing all I can to learn and master the detectors I enjoy using, I rely on the following conclusions I have reached:

1.. I do own and use a few [size=small](4 or 5)[/size] Double-D [size=small](Wide-Scan)[/size] search coils, but most of my hunting is in very iron contaminated mineralized ground and the bulk of my search coil picks have been and are Concentric types. I just use the sizes that are best suited to the site's target condition and that means smaller-than-stock sizes to deal with the abundant discarded ferrous and non-ferrous junk.

2.. Ground mineral conditions, surface make-up and various challenges I encounter used to show a slight advantage to using a DD coil on some makes of detectors for some applications, but I do not find that to be so true today with certain detectors I prefer. The Makro and Nokta models were designed with DD coils and only have DD coils made for them, just like my old straight TR Compass Coin Hustler and 99-B detectors.

My White's and Tesoro detector preferences were designed mainly with and for Concentric search coils, and those are what I have found to provide the best all-around performance for me, and I hunt in bad ground and trashy conditions ... combined.

3.. In more gentle ground, and places where I do not anticipate deeper targets and will mainly be quickly getting coins and jewelry close to the surface [size=small](such as most tot-lots, etc.)[/size], I often grab one of my two 'preset' GB Tesoro's [size=small](the Silver Sabre II or Silver Sabre µMAX)[/size] because I have the GB set to be 'functional' for most environments. When I want more detector control, anticipate some deeper-located targets, and especially when I know the ground mineral environment is more challenging, I grab one of my three Bandido models or my Eldorado as they feature manual Ground Balance.

If I plan to mainly hunt in the Threshold-based All Metal mode, then I adjust for a functional Ground Balance in that mode.

If I am mainly hunting in the silent-search motion Discriminate mode, I also want to have the best, most functional Ground Balance for that mode, and due to Tesoro's circuitry design in most models, I achieve the best Disc. mode GB by using my 'Power Balance' technique. I learned that advantage tinkering with a couple of 4-filter models in '79 to '82, but really appreciated the improved Discriminate mode performance on Tesoro models which I started using and selling over 32 years ago. Taught avid customers and instructed in seminars since '81, and for those who are willing to learn about Ground Balance [size=small](many people aren't[/size]), this method can help.

Yes, it can usually render the conventional All Metal mode useless for searching in most cases, but with most Tesoro models, the improved depth and responsive performance in the Discriminate mode is well worth it.

Monte