Have Vaquero and Cortes. Tested against each

[jabbo]

other on various small gold items. Placed items (ladies small gold chain bracelet, ladies thin ring, small cross, pendant) one at a time in a cardboard box at different depths. The maximum detection depth of each item was the same for both machines whether in the All Metal mode or in Disc. mode, set just above minimum. I thought that the 14 KHZ Vaquero was supposed to be more sensitive to gold than the 10 KHZ Cortes.

 

[Corteser]

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[Macaco]

Was there any small jewelry that the Vaquero could pick up that the Cortes could not?

I have a Cibola and it picks up tiny pieces of metal that my Sovereign, for instance, couldn't see at all.

Did you try testing gold or silver chains with both machines?

Thanks.

 

[Ivan]

That's a great test if your only finding targets in paper boxes.......................but in the ground the results do change. They are subtle, but in a first sweep situation.... in medium minerals.....there is a slight advantage for the higher frequency . You would however; probably get less of a hit on deep silver. I believe the the 10KHz is a much more rounded frequency...........................just my opinion. I've used both but by going too much to one end of the frequency scale, you begin to loose sensitivity on the other end. For example 5 KHZ units hit harder on silver and 15 KHZ units hit harder on gold. One of the most successful water detectors ever ..............was the original Tesoro Stingray .Bob Anderson of California; tested this unit at a very heavily mineralized lake in California. In the Western/Eastern July 1993 issue on page 29 .....you can see him pictured with about 3 lbs of gold jewelry. He was not a diver..........only searched by the waters edge and in the dry sand. In an accompanying story he did raise a concern over the frequency, that was put to bed by the results.The machine in question ran at the same frequency as the Cortes 10KHZ!!! I rest my case!!!

 

[jabbo]

only the cross deeper with increased discrimination. Maybe Ivan is right about air tests vs. buried items. All Metal mode was used to set the maximum depths, I had to reduce the depth of the items to get a hit in disc. mode with both machines. Used 9 x 8" coils. Sensitivity 7.

 

[Monte]

The reason they don't is because most comparisons are not conducted "in the field!" Don't get me wrong, I like to do simple "air tests" for some quick idea of potential under ideal conditions, but I know that the nly true test is by using two or more models, at the same site and time, on a naturally lost and located target. Not a fresh bury, but in a true field comparison.

There can be other differences as well and I have quoted your original and one follow-up post to respond to.:


[quote jabbo]Have Vaquero and Cortes. Tested against each other on various small gold items. Placed items (ladies small gold chain bracelet, ladies thin ring, small cross, pendant) one at a time in a cardboard box at different depths.[/quote]Why "put them in a cardboard box?" If it was to just control the coin-to-target distance I guess that might have worked, except for the "different depth" you said you used. If you're going to "air test" then you should, even a cardboard box can have an affect on detection depth and ability.


[quote jabbo]The maximum detection depth of each item was the same for both machines whether in the All Metal mode or in Disc. mode, set just above minimum.[/quote]IF both of them had a comparable Threshold and GB setting then the All Metal comparisons might be more 'fair.'

But they don't have the same Discriminate circuitry range, so setting them "just above minimum" means they are not going to be set the same. To be set similar, you'd have to use a control 'sample', such as an iron nail, and adjust the Disc. mode so that each model displayed a similar rejection in all three nail positions at the same nail-to-coil distance.


[quote jabbo]I thought that the 14 KHZ Vaquero was supposed to be more sensitive to gold than the 10 KHZ Cortes.[/quote]"Book Theory," as I call it, can get comical at times. The Very Low Frequency Range runs fro about 2 kHz to 30 kHz, and most detectors have been designed to operate from about 5 kHz to 20 kHz. When the same manufacturer, using the same types of coil designs and circuitry approach makes two somewhat similar models at different ends of the VLF spectrum, it is easier to see the difference. Garrett and D-Tex did that with their 5 kHz Deepseeker and 15 kHz Groundhog models. In general they were very close, in really bad ground the Deepseeker did a little better, but you could see the most difference in the responsiveness between gold and silver targets.

At the time, most brands picked frequencies between 5 & 15 kHz, such as the 6.59 kHz used by White's, Bounty Hunter and Teknetics with their VLF motion discriminators, or the Tesoro's that started out at 12.5 kHz and fluctuated between 10 kHz and 15 kHz for their land-based models.

From 1983 thru about 1994

 

[Pap]

now where is the book? Kidding of course...well sort of. Sorry I missed out on that Silver you had for sale. That was a great buy!
Pap

 

[Monte]

I might have a really decent, gently use one by next Friday. Probably the same condition as the one I just sold, but w/o a box. Big deal! And perhaps, just maybe, all of 1 -2 hours use in the woodchips. I have to look close to tell any difference between it and the one I just sold.

I'll let you know. It's going to go for about $160 or so.

Monte

 

[Pap]

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