Vallon VMH3CS Mine Detector

[waltr]

Refer to Green's GEB thread and GB hole plots.
https://www.geotech1.com/forums/show....php?24120-GEB

If a Target's TC is not near the GB Hole then there should not be any deduction of the detection strength (distance).

It is only when the target TC is close to the GB Hole that the target's signal is attenuated, thus a reduction in detection distance.

[kingswood]

Just an interesting bit of info
Went out on the weekend...spot has lots of clay that is quite salty and highly mineralised. The GPZ7000 was as noisy as anything, difficult to tame it!
I have been there previously and this time took the vallon mainly just to see if it would GB...can confirm that it was able to GB to the noisy ground very well.

[pustareka]

Privet Helo !

[lytle78]

Sounds like the vallon has potential - I have finished with my activity with mine. Bought from the Polish surplus dealer on eBay - sent to the Vallon agent in the US and updated to latest civilian software. Need to move on - for sale $450 shipped US only (sorry).

[Ferric Toes]

Privet Helo !

[ATTACH]45862[/ATTACH]

If you mean the electrical connections; the centre pin is to the live side of the coil, and all six outer pins are connected together and are coil and electronics ground via the coax braid.

Eric.

[MTammet]

I use Use drilled out 20mm hole in PVC waterhose 25mm fitting endcap. For shaft tube I use electric installation tube.

[pustareka]

If you mean the electrical connections; the centre pin is to the live side of the coil, and all six outer pins are connected together and are coil and electronics ground via the coax braid.

Eric.

Thank you Eric.


I mean name/marking sockets !
Which name 7pin bayonet military connector use Vallon ?

https://www.alibaba.com/showroom/7pin-bayonet-connector.html

https://www.alibaba.com/product-deta...474d48Pl47&s=p

Thank you

[kujab]

Hello,
I am happy new owner of beast Vallon VMH3CS. Unfortunately last friday I missed UPS courier so he will come next business day and did not have any chance to try it. Someone got finally firmware cable for upgrade to new version ? Does it worth it ? What settings are you using on the beaches ? Someone recommended me mineral with sensitivity 6. Mine armrest missing and would like fix it by myself. Any recommendations ? Cheers for many questions - I am novic

[Firey10_0]

Hi everyone, I am also now the proud owner of a vallon vmh3cs, it has the 1.14 firmware confirmed by the confidence chirp every 2secs.
I live in south Australia and want to use it mainly for gold nugget detecting. The soil here can be OK in spots and quite hot in other areas but not as bad as WA from what I read about. My question is would it be worth getting the firmware upgrade to the 1.19 version which changes a few things including the soil compensation. Will this improve the ground balance in the hot areas or is it only a small improvement. The confidence chirp doesn't really bother me too Michal that change Isn't an issue. Let me know what your thoughts are.
Also can you let me know what parts are needed to do the earphone MOD and a rough wiring diagram would be great just so I know how to connect it all up.
Thanks in advance for all your help.

[MTammet]

Hi everyone, I am also now the proud owner of a vallon vmh3cs, it has the 1.14 firmware confirmed by the confidence chirp every 2secs.
I live in south Australia and want to use it mainly for gold nugget detecting. The soil here can be OK in spots and quite hot in other areas but not as bad as WA from what I read about. My question is would it be worth getting the firmware upgrade to the 1.19 version which changes a few things including the soil compensation. Will this improve the ground balance in the hot areas or is it only a small improvement. The confidence chirp doesn't really bother me too Michal that change Isn't an issue. Let me know what your thoughts are.
Also can you let me know what parts are needed to do the earphone MOD and a rough wiring diagram would be great just so I know how to connect it all up.
Thanks in advance for all your help.

No need for firmware upgrade. My opinion.

[DonCaffeDelaSkobalj]

Hi everyone, I am also now the proud owner of a vallon vmh3cs, it has the 1.14 firmware confirmed by the confidence chirp every 2secs.
I live in south Australia and want to use it mainly for gold nugget detecting. The soil here can be OK in spots and quite hot in other areas but not as bad as WA from what I read about. My question is would it be worth getting the firmware upgrade to the 1.19 version which changes a few things including the soil compensation. Will this improve the ground balance in the hot areas or is it only a small improvement. The confidence chirp doesn't really bother me too Michal that change Isn't an issue. Let me know what your thoughts are.
Also can you let me know what parts are needed to do the earphone MOD and a rough wiring diagram would be great just so I know how to connect it all up.
Thanks in advance for all your help.

Hey Firey10_0

About earphone i think it's good idea to mount small one IC FM transmitter pcb using KT0803L (or K better) with some professional bluetooth wireless headphones for example
https://www.amazon.com/Wireless-Head...F8&node=509316

IC transmitter
http://www.alldatasheet.net/datasheet-pdf/pdf/1134996/ETC2/KT0803L.html

[kingswood]

I have 3 VMH3CS's...Dont really need them now I have the 7000
Will keep one of the VMH3CS's for beach work just in case.
Happy to off load the others at $400 each with free postage ....
They all work. All have intact arm rests and the canvas bag.
PM me if you want one...

[DonCaffeDelaSkobalj]

Hey Mr.Foster

Could you do some tests of this kind of extreme low capacitance, parts of usec delay, hyper fast samplng basket coil with your VNH3CS MD ?
On the picture solid copper wire was used, but i think there should be used only multiple strands insulated litz wires. Also multi-layered dielectric waxed cardboard insulator should be used between two successive layers of coil and plastic housing. Mr Foster you have already done all impendance measurements of original VMH coil. so i think it woudn't be problem for you to test this type of coil. Also would be great if somebody could meassure big diameter Vallone coil fro 3CS.

Thanks in advance. If any case i want to hear your oppinion about.



ps: Please check your forum's e-mail.
Thank you !

[Ferric Toes]

Hey Mr.Foster

Could you do some tests of this kind of extreme low capacitance, parts of usec delay, hyper fast samplng basket coil with your VNH3CS MD ?
On the picture solid copper wire was used, but i think there should be used only multiple strands insulated litz wires. Also multi-layered dielectric waxed cardboard insulator should be used between two successive layers of coil and plastic housing. Mr Foster you have already done all impendance measurements of original VMH coil. so i think it woudn't be problem for you to test this type of coil. Also would be great if somebody could meassure big diameter Vallone coil fro 3CS.

Thanks in advance. If any case i want to hear your oppinion about.



ps: Please check your forum's e-mail.
Thank you !

This looks to be a super low capacitance coil, but I am sure that it would not show any improvement over the solid wire that Vallon used. The reason being that the Vallon electronics works in a rather different way to that of a conventional PI. Looking at JLKing's posts will give clues to some of the reasons, but a couple of important technical points are that nothing can be changed, except by Vallon, in the electronics to take advantage of a superfast coil. The performance they already get from a coil with a low resonant frequency and a lot of capacitance from a long retractable curly cable is quite surprising. I have tried stranded wire with Teflon insulation for a Vallon coil, and which works fine, but it is no better in performance than one made with the solid wire.

Eric.

[DonCaffeDelaSkobalj]

This looks to be a super low capacitance coil, but I am sure that it would not show any improvement over the solid wire that Vallon used. The reason being that the Vallon electronics works in a rather different way to that of a conventional PI. Looking at JLKing's posts will give clues to some of the reasons, but a couple of important technical points are that nothing can be changed, except by Vallon, in the electronics to take advantage of a superfast coil. The performance they already get from a coil with a low resonant frequency and a lot of capacitance from a long retractable curly cable is quite surprising. I have tried stranded wire with Teflon insulation for a Vallon coil, and which works fine, but it is no better in performance than one made with the solid wire.

Eric.

Thank you Eric. You are the best here.

Take care and good luck !