blisstool ltc64x v2i

[joop]

Like Mrand, I'd like to know how to do a depth test to an accuracy of 2 decimal places.

This is caused by the conversion calculations from centimeters to inches.

[slomobi]

If I had a FISHER1235 available for 2-3 hours will do it with the same parameters as is BLISSTOOL LTC64X v3, of course, will replace and search coil of 1235 . Unfortunately this depth is at the expense of increased instability.

[slomobi]

The first picture in reply # 27, is an early version of blistool metaldetector, and the second picture (which is blurry, unfortunately) is "Enigma".

Blah blah blah
All these versions were invented for fools to take their money. Blistool metaldetector a complete copy of the Bulgarian metal detector ,,Enigma,,. Please see the attached pictures and see that the integrated circuits on all versions of LTC48 to LTC64xV2 are identical, the differences are that the resistors in the new versions have been replaced with potentiometers or trimmer potentiometers.


EGIGMA produced 1998

BLISSTOOL LTC42

BLISSTOOL LTC64X

BLISSTOOL LTC64xV2

[enrique81]

Looks like 48 is better than 64
According to this test,64 can not detect roman dupondius at 18cm

http://www.metalldetektortest.de/Belgientest/Blisstool/blisstool.html

[Skippy]

Is it just me, or are none of those depths in the table above really challenging? For example, the silver coin, 2.6 grams, it sounds similar to a U.S dime, or a British sixpence. 5.5 inches isn't a challenge for any machine, is it? Decent modern machines will find one of them at 8 to 9 inches, I think, and multi-freq machines maybe 10 - 12 inches.

[Qiaozhi]

Below you have a depth overwiew from the as serious known
"belgium test" 1.5 years ago (the capture of the attached jpg
was on August 2010).

The green v means OK - found, and not alot machines have
almost everywhere that v! The LTC48 was the model before
the LTC64 came out but very similar concerning depth.

Like Mrand, I'd like to know how to do a depth test to an accuracy of 2 decimal places.

And what is the goal now?
Do you like to reverse engineer the LTC64 v3 so you can
have this machine for (almost) free?
Is this the reason of the new interest?

Although some people will inevitably be interested in reverse-engineering, the main interest here is to verify (or otherwise) the performance of this machine. Is this actually something new, or just a re-hash of someone else's design with a level of amplification that is unusable in practice?

Well, well - it's always the same problem...
500 or even 1000 bucks is alot of money and can I trust
those who are saying it's worth the price... ???

Because shops wanna make money and persons wanna
look better than in real, and the whole showbiz is a huge
fake world, too.

Exactly the point. Can you take the demo at face value? Dealers will always demonstrate their products to show them in the best possible light, and there's nothing wrong with that of course. But it is how they answer any questions, or react to criticism, that reveals the most information.

@ Qiaozhi
>find a real live Blisstool user

What's "real live" for you?

By using the term "a real live user", I'm referring to an unbiased user. That is, someone who is not a dealer, not connected to the manufacturer in any way, and does not have a vested interest. Although you have given us some feedback on this detector, it would be good to hear from at least one of the many other users out there.

[Mrand]

Please tell me, how one can measure the target depth to within 0.01 inch?
Mrand

[Funfinder]

Immediatly sold at ebay if offered or not is no criterium for exotic MD
machines and selling an used MD doesn't always means it was bad,
so please stop rumors and assumptions and work serious by tests.

And it has to do with the circuit and the used parts if a machine
works at highly amplified limits or not. The Garrett GTI 1500 or
2500 for shure is not better as the Blisstool if it comes to electro-
smog sensitivity.

If they are using OPAMP chips in series containing FETs it's really
no wonder this stuff reacts on powerlines like hell. The coil works
as an high-gain antenna for alot of stuff...

And persons like WM6 shall not disguise themselves as serious
technical working specialist after all the unbelievable nonsense
they have spreaded here! Those have lost already completly all
credibility and are not capable in finding realistic assessments!


Below you have a depth overwiew from the as serious known
"belgium test" 1.5 years ago (the capture of the attached jpg
was on August 2010).

The green v means OK - found, and not alot machines have
almost everywhere that v! The LTC48 was the model before
the LTC64 came out but very similar concerning depth.

btw. the oh so famous XP Deus is not able to find very tiny
gold-chains because those are very close to very small iron.


And what is the goal now?
Do you like to reverse engineer the LTC64 v3 so you can
have this machine for (almost) free?
Is this the reason of the new interest?

As we can see already from the PCB pictures, it uses some
opamps like the Fisher 123x or 126x and it has the same
audio target response, too. Motion is same, voltage also.

I guess the coil has been optimized by the DD-shape and
perhaps more inductivity and the detection circuit has been
improved or changed somehow. The old Fishers are extremly
sensitive to electromagnetical disturbances and forces, too.


Well, well - it's always the same problem...
500 or even 1000 bucks is alot of money and can I trust
those who are saying it's worth the price... ???

Because shops wanna make money and persons wanna
look better than in real, and the whole showbiz is a huge
fake world, too.

I have tested my Blisstool LTC64 directly where I bought
it before and if those tests haven't been convincing I haven't
bought it, it's that simple. Especially to very tiny gold-objects
it was sensitive and this even 20m nearby a house with the
usual EM-pollution.

However I'm used to this kind of analog technic because of
my Fisher 1266x experiences for a long time but todays
Ace 250 switch on and go generations may have no nerves
for the technical adjustments, finetuning and collecting some
search-experience first.

I could post you the old printed Fisher manual with the
"snap crackle and pop" section and alot persons would find
it very confusing or even amusing - but that's life -
take it or leave it!


@ Qiaozhi
>find a real live Blisstool user

What's "real live" for you?

Belgium test:

http://www.geotech1.com/forums/showthread.php?p=52640

[target]

any buyers will buy direct from the dealer in Cardiff where they can go and try them out to make sure they do what they claim.ebay is no yardstick of sales.
thats what i would do ,try and buy .
they will start turning up at UK rallies this summer where they can be seen working then there will be more feedback on their true capabilities .
i could add a v3 to my collection if it is deeper than my Deus when i try it out at the dealers.i will run a comparison

[Qiaozhi]

I think we may have to wait some time before we find a real live Blisstool user. The UK distributor still has an eBay score of zero.

[Skippy]

I notice the better/newer V2,V3 models run at 8KHz, rather than the 8.15K/8.5K? of the V1.This intrigues me. Maybe the oscillator is quartz locked in these, 8KHz is a round number. Though so is 8192Hz if you want. I'm sure quartz-controlled injection-locking or direct-switching has to be essential for what is apparently a high-gain machine. I suppose you could lock the TX to a high-stability RC oscillator, that way you could fine-tune the frequency.

[holyuser]

Interesting ... so the rumour is true then?

Yes, this is the truth.

[Qiaozhi]

The first picture in reply # 27, is an early version of blistool metaldetector, and the second picture (which is blurry, unfortunately) is "Enigma".

Interesting ... so the rumour is true then?

[holyuser]

I've heard a rumour that it's a derivative of another Bulgarian detector called "Enigma", which in turn is an over-amplified copy of a Fisher 1235.

The first picture in reply # 27, is an early version of blistool metaldetector, and the second picture (which is blurry, unfortunately) is "Enigma".

[Qiaozhi]

I've just noticed the 0.1 inch jumper link on the internal picture, I wonder if this is the frequency adjust, adding a few nanoFarads extra capacitance to the tuned circuit? It doesn't look like it's a crystal-controlled oscillator. I would have thought that crystal locking of the master oscillator would be essential for making a very sensitive machine.

I've heard a rumour that it's a derivative of another Bulgarian detector called "Enigma", which in turn is an over-amplified copy of a Fisher 1235. If true, I guess (with all the extra external controls) that it's been modified quite a lot.