Vallon VMH3CS Mine Detector

[below2doe]

Hi Lytle78

Can you tell me what the update entails and the advantages. Regards Ray.

[Riss]

Hi Lytle78

Can you tell me what the update entails and the advantages. Regards Ray.

A week ago I saw the oscillograms in a few of the most important points in the reception area on Vallon VMH3CS -very briefly .They use an input amplifier with a gated input . Between the coil and the input operational amplifier there is a key of two SMD VMOS transistors . They are opened 80 microseconds after the transmission pulse is completed. Then I saw the impulses to the analog keys that are in front of the integrators . First sample - about 2 microseconds after starting 80 microseconds reception time section . The first sample is about 2-4 microseconds long. The second sample starts about 25 microseconds after the start of the 80 microseconds period and is about 25 microseconds long . The third sample is about 25 microseconds long -It ends with the end of the 80 microseconds period. There is also a sample that integrates 80 microseconds over the entire reception period . Nothing new under the sun ! I immediately lost any interest towards Vallon VMH3CS . After the measurements I assembled and tested it -worked the same way in all modes .
3 days ago along with 3 friends we performed parallel tests on 3 detectors- Vallon VMH3CS ( 30sm /17sm original monocoil ) -but not the one I measured -I have 2 pieces Vallon VMH3CS , one just unpacked Nokta Anfibio-multi (with search head - https://www.noktadetectors.com/acces...28-cm-11-af28/ ) , and the good old ,,Madmaxovina “(search head 26cm DD ) -Geotech , Tech forum , Thread: About a hybrid , and Thread: Real tests. This is a science ... . Nokta Anfibio measure the soil - showed a figure of around 85 . The friend he brought Nokta Anfibio said that this soil is quite heavy. He also brought a stone (about 26 cm long , about 15 cm wide and about 8 cm thick , quite flat )- my magnet stuck tightly to this stone . I dragged my piece of iron ore - the same from the videos of the above mentioned topics This piece of iron ore causes a reduction of TX current at the end of 260 microseconds long TX period on Minelab GPX4500 working with 39cm/30,5cm DD Commander search head ( 43E6WF &C6073278 ) . The current is decreasing around 7-8 % , when the piece of ore is placed in the area of intersection on TX and RX coils .

. We tested the discrimination under the elongated stone , then registering targets under the two stones ( the piece of iron ore is on the elongated stone ). Under iron ore, discrimination is impossible- for now there is no detector that can do that . Then we checked the registration and discrimination of a 1 lev coin (https://profit.bg/moneti-v-obrashtenie-1-lev/ ) placed in a narrow hole on slope in the soil at a depth of about 21-22 cm . I will not talk about the test results - no video was made . Besides, I was accused of advertising , and bad behavior . I will be a polite, diplomatic and non-conflicting member of the forum. I personally returned to a great mood and a serene spirit of these parallel tests …

[lytle78]

About the software updates - see this - post 1264

https://www.geotech1.com/forums/show...allon+software

[Riss]

About the software updates - see this - post 1264

https://www.geotech1.com/forums/show...allon+software

It is post 1264 :
,,Yes you are correct. It should read VMXC1 my mistake. This is a UXO detector that has discrimination but for larger targets than I am interested in. VALLON would not allow the firmware upload as these detectors are marked with a large red label stating so. My firmware updates gave me what I most wanted as I dig all my targets where I use the VALLON. I have six additional filters I can use, to help control EMI and sweep speed, auto soil compensation, auto channel search ( it takes about two min.s to search all 40 frequencies but sure saves a lot of time, and is a joy to watch after the days of manual search ) a surf mode, and the confidence click is no longer present, which was annoying to me. “ There is no link to this miraculous software in this post ...
Where can this magical software be downloaded? I can not work anywhere in ,,normal ‘’mode-Vallon VMH3CS bellow,roar when approaching search head to the soil and the stones ! In normal mode has superior sensitivity , BUT ONLY IN AIR !!!It is absolutely impossible to work in the normal mode in the soil ! In Mineral mode , when passing in point 3.3.1 –Automatic Fine Adaptation to Mineralized Soil (http://www.vallon.de/download/Vertri..._soft_1_14.pdf ) does not react to the soil , but sensitivity to all types of targets is just tragic !!! I do not even need a shovel , when i work with Vallon VMH3CS -he responds only to the shallowest targets ! Have not you noticed this until now ? I have long not believed in miracles and miracle softwares , but please someone help me ?

[lytle78]

The updated software manual I received is Software version 1.19. Vallon in Germany sent me a link to the software but I elected to pay shipping to and from the US agent and they upgraded it for me - no cost. For my second Vallon which was a bit more beat up, I had them do the $149 service check as well as the free software upgrade.

In order to use the software myself from the link Vallon sent me, I would have had to source the proper connector for the headphone/data port and then fabricate a data link cable to either USB or RSS 232 to interface with a computer. I didn’t want the bother - round trip shipping to Pennsylvania cost me only $40.

[Riss]

The updated software manual I received is Software version 1.19. Vallon in Germany sent me a link to the software but I elected to pay shipping to and from the US agent and they upgraded it for me - no cost. For my second Vallon which was a bit more beat up, I had them do the $149 service check as well as the free software upgrade.

In order to use the software myself from the link Vallon sent me, I would have had to source the proper connector for the headphone/data port and then fabricate a data link cable to either USB or RSS 232 to interface with a computer. I didn’t want the bother - round trip shipping to Pennsylvania cost me only $40.

Share, please, what is changing in detector behavior? Improving the depth of target registration ? Support your words with measurements. You can use squares pieces of aluminum sheet about 1 mm thick. e.g. 1x1 cm , 3x3 cm , 5x5 cm and 10x10cm . Instead of coins and flying saucers… These sheets have a sufficient range of time constants . Many enthusiasts will be very grateful to you ! Sappers working with Vallon VMH3CS it is no longer possible for them to express their gratitude…

[Ferric Toes]

Share, please, what is changing in detector behavior? Improving the depth of target registration ? Support your words with measurements. You can use squares pieces of aluminum sheet about 1 mm thick. e.g. 1x1 cm , 3x3 cm , 5x5 cm and 10x10cm . Instead of coins and flying saucers… These sheets have a sufficient range of time constants . Many enthusiasts will be very grateful to you ! Sappers working with Vallon VMH3CS it is no longer possible for them to express their gratitude…

Hi Riss,
Have you read back through this forum? It is a long read, but there is much useful information which includes performance aspects of The VMH3CS. I regard it as a superb detector and good value for money, even if some are rather beat up from active army use. In my opinion the ground balancing in 'mineral' setting is very good and it even works well in Australia, which is renowned for it's hot ground. One exception is an area in Western Australia which has ironstone pebbles that have a slightly different decay from that of the surrounding ground. You can balance on one or the other but not both at the same time. Depth of detection is excellent both in 'normal' and 'mineral' modes and I have not noticed any appreciable difference in detection range between modes. Your last sentence seems to suggest that Sappers have been blown up as a result of using technically inferior product; or am I misunderstanding you?

Eric.

[Riss]

Hi Riss,
Have you read back through this forum? It is a long read, but there is much useful information which includes performance aspects of The VMH3CS. I regard it as a superb detector and good value for money, even if some are rather beat up from active army use. In my opinion the ground balancing in 'mineral' setting is very good and it even works well in Australia, which is renowned for it's hot ground. One exception is an area in Western Australia which has ironstone pebbles that have a slightly different decay from that of the surrounding ground. You can balance on one or the other but not both at the same time. Depth of detection is excellent both in 'normal' and 'mineral' modes and I have not noticed any appreciable difference in detection range between modes. Your last sentence seems to suggest that Sappers have been blown up as a result of using technically inferior product; or am I misunderstanding you?

Eric.

Hi Eric , -Yes, I went through all of them 69 pages on this topic . Yes, there is undoubtedly useful information in this topic . You are a famous authority and people believe you . But I only believe in measurements . And the undisputed facts . Here's what :- in Mineral mode , after passing the procedure in point 3.3.1 –Automatic Fine Adaptation to Mineralized Soil (http://www.vallon.de/download/Vertri..._soft_1_14.pdf ) there is a significant reduction in sensitivity . I and a few of my friends watched him repeatedly- in 4 different types of soils , for a piece of ceramics and when I tried with my piece of iron ore .Vallon can not reject the piece of iron ore -it should be more than 10 cm from the search head , so as not to be heard . We know the reason for that-too high inductance ( 1,5 mH ) on search head . So it has a criminally great time constant , but the reaction of the magnetic field of most mineralized stones is very, very fast- far faster than this too slow coil…by the way, many people in Bulgaria sell theirs VallonVMH3CS . Sites are full of ads …There is a reason to want to get rid of it .I know what detectors can and can not do . I take into account the size of search head ,whether it is DD or monocoil ,the principle of action and many other factors . I have not had higher expectations . I never make hasty conclusions . And I stand behind my allegations -I'm sure 100% of what I said . I have absolutely no financial benefit to write positive or negative feedback . About your final question -I'm afraid not only me , many owners of Vallon have come to this logical conclusion . Everything in this world is predictable , logically related . And the logic is iron – ironlogic . Hercule Poirot, Sherlock Holmes…in the tests Vallon there was absolutely no reaction a coin of BGN 1 (https://profit.bg/moneti-v-obrashtenie-1-lev/ ) placed in a narrow hole on slope in the soil at a depth of about 21-22 cm !Absolutely no signal , no reaction! 4 people watched this test simultaneously , several times . These are the undisputable facts . Anyone who has it, VALLON VMH3CS can do a similar test . The result will be the same . Science is based on repeatability of measurements, is not it?

[MTammet]

Hi Eric , -Yes, I went through all of them 69 pages on this topic . Yes, there is undoubtedly useful information in this topic . You are a famous authority and people believe you . But I only believe in measurements . And the undisputed facts . Here's what :- in Mineral mode , after passing the procedure in point 3.3.1 –Automatic Fine Adaptation to Mineralized Soil (http://www.vallon.de/download/Vertri..._soft_1_14.pdf ) there is a significant reduction in sensitivity . I and a few of my friends watched him repeatedly- in 4 different types of soils , for a piece of ceramics and when I tried with my piece of iron ore .Vallon can not reject the piece of iron ore -it should be more than 10 cm from the search head , so as not to be heard . We know the reason for that-too high inductance ( 1,5 mH ) on search head . So it has a criminally great time constant , but the reaction of the magnetic field of most mineralized stones is very, very fast- far faster than this too slow coil…by the way, many people in Bulgaria sell theirs VallonVMH3CS . Sites are full of ads …There is a reason to want to get rid of it .I know what detectors can and can not do . I take into account the size of search head ,whether it is DD or monocoil ,the principle of action and many other factors . I have not had higher expectations . I never make hasty conclusions . And I stand behind my allegations -I'm sure 100% of what I said . I have absolutely no financial benefit to write positive or negative feedback . About your final question -I'm afraid not only me , many owners of Vallon have come to this logical conclusion . Everything in this world is predictable , logically related . And the logic is iron – ironlogic . Hercule Poirot, Sherlock Holmes…in the tests Vallon there was absolutely no reaction a coin of BGN 1 (https://profit.bg/moneti-v-obrashtenie-1-lev/ ) placed in a narrow hole on slope in the soil at a depth of about 21-22 cm !Absolutely no signal , no reaction! 4 people watched this test simultaneously , several times . These are the undisputable facts . Anyone who has it, VALLON VMH3CS can do a similar test . The result will be the same . Science is based on repeatability of measurements, is not it?

And that is why we make instead of 7.5 inch diameter factory coil 12 nd 14 inch coils for Vallon.

[Rocketdemon]

Well for all its worth I acquired a 2002 1 Lev coin and tested it in free air against my Vallon fitted with DIY 12inch coil inspired by Eric, it does work extremely well! See photographs below.

Anyway I could get 2 LED's at 42 cm with my set up just for the record.

Pete

[Riss]

Well for all its worth I acquired a 2002 1 Lev coin and tested it in free air against my Vallon fitted with DIY 12inch coil inspired by Eric, it does work extremely well! See photographs below.

Anyway I could get 2 LED's at 42 cm with my set up just for the record.

Pete

Thank you, you gave me hope ! And how quickly did you get with a coin of 1 lev ?- congratulations ! I would use 2 cells Li-ION connected in parallel , standard, from a laptop .Li-Po batteries from a crashed dron are an even better option - they have extremely low internal resistance . You have very well done the staff (stick ) on Vallon. And now, please , Find a well-baked brick or tile for the roof . Or a thick piece of ceramics. Ceramics changes its magnetic properties in the baking process . - in Mineral mode , after passing the procedure in point 3.3.1 ?Automatic Fine Adaptation to Mineralized Soil (http://www.vallon.de/download/Vertri..._soft_1_14.pdf ) . Adjust Vallon to ceramics . Then again perform an air test . You in the United Kingdom you have extremely light soils- with very low reactive components . This makes you mislead about the capabilities of Vallon in Mineral mode . Оn English territory, the detectors have almost no depth loss in the soil . Measurements of my soil showed : - in the air at 36 cm ,but in the soil at 28-29 cm - coin 1 lev , VLF detector with working frequency -12 khz . The coin from 1lev to 21 cm deep in the soil is indicated as an iron target in this soil , of all detectors on the market .. Now, with eliminated ceramics-say please , what is going on with sensitivity ?

[Rocketdemon]

Thank you, you gave me hope ! And how quickly did you get with a coin of 1 lev ?- congratulations ! I would use 2 cells Li-ION connected in parallel , standard, from a laptop .Li-Po batteries from a crashed dron are an even better option - they have extremely low internal resistance . You have very well done the staff (stick ) on Vallon. And now, please , Find a well-baked brick or tile for the roof . Or a thick piece of ceramics. Ceramics changes its magnetic properties in the baking process . - in Mineral mode , after passing the procedure in point 3.3.1 ?Automatic Fine Adaptation to Mineralized Soil (http://www.vallon.de/download/Vertri..._soft_1_14.pdf ) . Adjust Vallon to ceramics . Then again perform an air test . You in the United Kingdom you have extremely light soils- with very low reactive components . This makes you mislead about the capabilities of Vallon in Mineral mode . Оn English territory, the detectors have almost no depth loss in the soil . Measurements of my soil showed : - in the air at 36 cm ,but in the soil at 28-29 cm - coin 1 lev , VLF detector with working frequency -12 khz . The coin from 1lev to 21 cm deep in the soil is indicated as an iron target in this soil , of all detectors on the market .. Now, with eliminated ceramics-say please , what is going on with sensitivity ?

Hi Riss

There just happened to be one on Ebay in UK for 2 pounds with free postage, I couldn't resist it! I am happy with the D cells, yes thanks - shaft is from an old Fisher 1210.

I 'll see what I can do for you but no promises, I only use my Vallon on the beach and never use mineral mode.

I am no electronics design engineer, all I know is that my Vallon with a 12 inch coil works very well on UK beaches! Thanks Mr Foster!

Pete

[Riss]

Hi Riss

There just happened to be one on Ebay in UK for 2 pounds with free postage, I couldn't resist it! I am happy with the D cells, yes thanks - shaft is from an old Fisher 1210.

I 'll see what I can do for you but no promises, I only use my Vallon on the beach and never use mineral mode.

I am no electronics design engineer, all I know is that my Vallon with a 12 inch coil works very well on UK beaches! Thanks Mr Foster!

Pete

Thanks for the quick response. I have always felt great sympathy to the United Kingdom , the reasons are many , one of them is your sense of humor. I remembered, a friend melted before my eyes such a coin of BGN 1 ( 1 lev ) with its lighter , which also works in the wind- makes a flame as a jet engine . The coin was made of lead , but in appearance was almost a perfect copy -but it made a different sound when you fall on the floor -fake, but so the counterfeiter ( faker ) demonstrates his Bulgarian sense of humor . From the picture clearly visible that with this search head has worked very little - under 20 hours . Plastic shells-they are from Whites TDI (top and bottom half ) -I really like , where to buy them ? With the old one Fisher 1210 it is not actually working-shaft is brand new , and the armrest (he is not from Fisher 1210 ) . You probably used a rubber insert , because the diameter of the stick of my two Vallon is 26.7 mm , and the sticks of Fisher is 22 mm , if I'm not mistaken . With this scattered design -the batteries in the pocket , with headphones on your head -you are quite slow, clumsy on the beach . Because there is no balance ( the weight of search head is small, and does not balance with the heavy one box of Vallon ) , your hand very quickly gets tired. And because I was curious , I will make a solution of sea salt in water, with concentration the same as that of the Atlantic Ocean and I will test Vallon , using river sand and salt solution -not far from my town there is a river with large deposits of sand . There is almost no soil effect (extremely light soil conditions )-there with my prehistorical VLF detectors i feel in the paradise of treasure hunters ! There I will test Vallon in the ,,NORMAL '' mode .

[Ferric Toes]

I too have a 1 Lev coin that will arrive this week from ebay, Since I can detect a 0.24gm flat gold nugget through a 40mm thick piece of Australian iron mineralised rock in 'mineral mode', I am quite confident that the Vallon will detect the 1 Lev at considerable range in this mode with the standard coil. The Vallon has been tested for detection range in highly mineralised soils in Cambodia and Laos by professional bodies working with humanitarian demining organisations. It came out as one of the best detectors in these conditions. Australian soil and rock is much worse than anything yet tested; maybe Bulgarian ground is worse still. If I can get a 10gm sample, I can test for magnetic susceptibility and viscosity. True scientific methods that are repeatable.

Eric.

[Ferric Toes]

I will make a solution of sea salt in water, with concentration the same as that of the Atlantic Ocean and I will test Vallon , using river sand and salt solution

This test is useless unless you have a huge volume of salt solution. What container volume will you be using? Even a small swimming pool with enough salt to bring it to the concentration in seawater gives little noticeable signal. Been there, done that.

Eric.