Tweet
To Erol
Please,copy in"Geotech" Thread.
Please,copy in"Geotech" Thread.
-
-
This will help much to compare and resolve misty parts...
Thanks Erol!Comment
-
HI,
Hi,Originally posted by erolunall View Post
Did you have any more info or just found this when browzing?
ThanksComment
-
Hi
Because most of ICs are with unknown values?!??
U............?But what are they?
ThanksComment
-
Hi,Originally posted by ivconic View Post
I think a bit interesting stuff is the temp compensated voltage reference: LM336-2.5
It's something that is there to mean "you need a stable voltage here"... and often something that in "common" MD you don't see. Seems that the stability issue is related to stability of that reference over temperature... and that's nice cause one could even find better solutions today, though a bit expensive... but if the purpose is making one clone... I see no problems at all.
Other interesting stuff is related to TX section...
Ivconic you used RH much as far I remember... what do you think of non-motion mode in it ? Is it superb for you or not ?
Kind regards,
MaxComment
-
Hi,Originally posted by ivconic View Post
took a look at it more deeply... please correct me if I'm wrong...A,B,C are tone ID signals used to control audio stage (well... frequency of tone generated I think depending on target composition).
The modes controls the time constants of integrators giving a preset for each mode to suit user needs: slow, medium and L ??? L means "large" maybe (widescan)... referring to sweep lenght at more speed ?
Uhm... I think the misterious parts need effectively some deeper understanding... but we are on the way ???
I think also... the first sampler stuff is about like in TGS, two channels about 90° one each other...
What do you think?
Kind regards,
MaxComment
-
Hi,
Hi,
Max!
How are you?
The S M L is switch wich changes the searching mode S-small ithems;M-medium ithems;L-large ithems.
This is what I now.But more interesting for me is fixed GEB!Comment
-
Hi,Originally posted by tiktak View Post
yes probably is like you said... I confused things... but it's about same stuff reversed: at L device is slower, so can catch deeper and larger targets... and at S is faster so can catch small things at few depth.
Kind regards,
MaxComment
-
Hi,
Hi,
max.
yes,maybe you are right.I am cnfused looking only the schematic.
Can anyone make PCB?According original schema?Max can you see any purpused facked parts?
ThanksComment
-
Yup! Used it for 3 years almost.Originally posted by Max View PostHi,
I think a bit interesting stuff is the temp compensated voltage reference: LM336-2.5
It's something that is there to mean "you need a stable voltage here"... and often something that in "common" MD you don't see. Seems that the stability issue is related to stability of that reference over temperature... and that's nice cause one could even find better solutions today, though a bit expensive... but if the purpose is making one clone... I see no problems at all.
Other interesting stuff is related to TX section...
Ivconic you used RH much as far I remember... what do you think of non-motion mode in it ? Is it superb for you or not ?
Kind regards,
Max
What non-motion mode??
You mean Pinpoint mode? Oh yes. No. I used it almost always in Disc mode.
Real thrill - using RH!
Before RH i had White's Eagle IIc, also excellent detector, but not so powerfull as RH.
Only one which can compete with RH in depth test is White's Eagle serie starting from Spectrum and up to MXT. RH is deeper a bit and have more accurate discrimination, although White's machines are also hell of machines.
I am talking here about highest league of metal detectors, not about medium class, so keep in mind that if you want to pull maximum out of those, you must have pretty rich experience in operating them.
RH actually acts as motion detector unlike mentioned White's models. On White's you can "simulate" motion mode by preseting so many presets there, but in their nature, those are full non motion machines - great advantage over motion detectors, especially in hands of experienced users.
Once you get used on some good non motion detector, i guarantee - you will forget motion detector for ever.
But...good non motion detectors are very expensive...always some catch!
Best i can advice to every interested is some from Eagle serie...plenty of those !
Carl once mentioned some Nautilus. I guess it is also non motion, although not sure.Never had chance to see it in action.
It is funny...but DFX, although great machine, is a bit worse than previous models....or it was just my subjective impression!? Not sure yet...
Comment
-
Hi,
Hi,
Ivica.
How are you?
So this is non motino not like TGS?
What is the diferance?Comment
-
Hello Ivconic and the forum,
You know well the RH Ivconic because you use it 3 years .
what is the difference with the GSL for the discrimination and primary for the DEPH research ...
Tell us if it is better to make the GSL or the RHL ....
do not know if you experiment yours coils with the RH ...Tell us we are very interesting ...
If the RHL is the deeper VLF machine because i NEED one ...
Thank you Ivconic
AlexisComment
-
Hi Alexis,Originally posted by Alexismex View Post
sure depth and disc are the most important issues about doing one or the other... also both projects are complex enough and require so much time that one must be really motivated to make one, including coil etc.
Sure , also, about TGS and TGSL we have plenty of informations and people that already made clones... and so who wanna try them will for sure achieve good results and could find help from the forum members who already made.
I think the question you made to Ivconic is meaningful but we have to consider a "little" detail too: coil size
We have TGS/TGSL running with the large DD but not as large like RH's coil is.... if I remember well RH was equipped with something 15'' minelab coil !
15'' means 37.5cm diameter.... WOW very big coil for a VLF, and we have just 27cm DD coil on TGS.
That's the problem: how to compare them this way ? too much difference at coil size to make reliable compare between the two.
Then where the RH probably shine ???
Well , I need Ivconic confirms that cause he has great experience with it, but think RH shine on stability and operation in worse soil conditions.
The unit is an australian product... and that say everything for me... worse soil couldn't be a problem for RH where , probably, TGS will drive you crazy...
Why ??? I think we modded TGS , changed e.g. fixed GEB etc to suit our needs... but RH was thinked from scratch to be rock solid in hell of a ground... with hi-mineral content etc etc it uses 5KHz oscillator... not 14.6Khz and this is another fact to keep in mind when compare...
So... probably the question must be changed in:
"do you think RH has a better electronics and balance, so will shine over TGS using same coil type/dimension" ?
Do you agree ?
Kind regards,
MaxComment
-
Hi,
Hi,
Max.
I am fully agree.
But the probleme is that TGS become unstable and hard to balance with coil over 27 cm!Thats and Ivconics opinion I am shore because I were so interested in bigger coil that have asked several times this quetion.But maybe the differance here is that RH could handle this bigger coil/which buy itself means much more depth/and stay rock stabile!?!??!
We will seeComment
-
Hi,
Ivconic,
now when I have read all again one question pupout in my mind!
I use my TGS with very slow moves because of the difficulies provoked buy terain.rocks etc........
So I use it almost like non-motion.Now I am curies what is the differance?
Please tell me you are EXPERT here.
thanksComment
Comment