How to Test Whites Metal Detector Coil Frequency 5900/di MXT All Pro
Vložit
- čas přidán 5. 04. 2018
- Several forums that I have read discuss operating frequency of their detectors. How can I measure the frequency and perhaps power output? What is the best VLF range. Well, here is a method I came up with. I did not spend a lot of time fixturing the detectors at certain heights or angles, just wanted to see if I could capture the signal. I was impressed with the clean symmetrical signal radiating off the search coil. You can perform a similar test using an inexpensive frequency counter. Just connect a small coil of wire rather than the telescopic antenna. I plan to deliver more testing videos Plus comparisons between the Vintage 5900 (6000/di) and MXT Pro. Stay tuned. I hope this info is of value to you. By the way, I do repair the Vintage detectors, not the new ones. Whites are my all time favorite. I have tried many other brands and keep going back. TD
- Jak na to + styl
My first detector was a 5000D back in the early 80's bought it used :))
This is really cool... I love how you show that these common pieces of test equipment can be used for many things. EXCELLENT Video Terry. Thanks Ron
That is a cool opening for your WHITES METAL DETECTOR, REALLY COOL !
Nice demonstration Terry. I like to see different brands on this.
Another cool video Terry, my Dad loved his White also.But he did like the Garrett too,I believe that was the name.He had a buddy they probably went out to the desert at least once every Month.I was a litt me kid then.He even had a Geiger Counter too,him and his partner thought they were going to hit the mother lode! Memories!!Thanks can't wait for your follow up.
Wow that's cool ! Great educational video!
Great show!!
Great video. So interesting.
Is that a D104 in the background? Brings back memories...Nice video!
Excellent demonstration. You took me back to my days in the early 1990’s when I was a Rf bench technician repairing and tuning Motorola pagers “beepers”! We did it all back in the day all the way down to surface mount component repairs and Xtal oscillator tuning.
Looking to grabbing a handheld frequency counter to test some of our new fast multi frequency metal detectors and possibly publishing some fresh content on this to my channel.
Cheers, #SeattleRingHunter
FIRST!! Exellent video terry THX
Super Cool...Thanks!
Thank you !
Hello. Great video. Very informative. I bought a White's DFX brand new in '04. Really enjoy it. I also have the Digging Deeper w/the DFX book by J. F. That book really helped me to understand why I was missing nickels and gold jewelry during the first few years after I bought the machine. Question: Is it possible to modify the detector with a higher frequency to better detect gold nuggets? Is that a software item? Could it be done w/a few electronic parts changes to the main board? The 15 hz 'can' work but it is not optimum. I've had to make alot of adjustments to block edit /hot rock reject, and a few others, to keep a quieter headset in areas of hot rocks. Thanks.
Weird looking Guitar Amp there hehe :) I have a BEAUTIFUL old radio that needs to be converted, might give you a ring this weekend Terry... interesting video... even for a guy that’s never touched a metal detector.
Hey man,
I will be here, plus have $$ for you on that Heathkit amp sale. TD
Cool, you sold the Zenith Conversion too Right? I just wanna re-invest it into a build with this beautiful Old Radio I picked up, so it's all gonna be yours anyway lol ... It's literally the PERFECT size, shape for a cool conversion.
So you must be a Silver Stacker too! ;^) OK Now your going to make me get out my detectors and go dig in the yard this weekend. Since most might not have a fancy spectrum analyzer but may have an O'scope, we could basically get the same info using it to test a metal detector too right? Nice tip to hook a scrap radio coil inductor to our input and wave the MD over it! We might have to do some basic math calculations by hand to get our result numbers. By hand those tenths and hundredths of a Khz get rounded off to, close enough. LOL 8^)
Would you be able to test a CTX 3030 ,they are saying it uses FBS and uses 1.5KHz to 100KHz all in one go ?
Have you ever tried to change the pin configuration to make adapters to swap coils between models? I think whites change this in order to make us buy other coils, in case of the Vcoils like your mxt they can run in 4 khz up to 20khz in a v3i at the same time or single freq selectable too, it seem you are a techi guy an can pull this one up, this could be a game changer for some of us that have older machines and have to buy scarse older coils
Have you looked at the Equinox? Rumour (US forum) is it either doesn't transmit or doesn't use all of the claimed frequencies in the various programme modes. Would welcome your PoV.
hello i would like to do this same test and i thank you very much for the information in your video im strugling to find a simulair 2.5mH coil do you no if the sercher coil 5000 turns would work or would that be to big or any links to anything that would work i appreciated your time and all your content thank you
Please help! What is the reason that my detector also detects gold as iron? Where can the error be? in a roll? Or in the display instrument panel? Thanks for your response!
Any source for old Whites Goldmaster and Coinmaster schematics and service manuals? I expect to need to replace capacitors in my 40 year old unit and it would be nice to see test points or at least a schematic.
Does anyone know if the "BLUE Max' series "Maxima 1500" search coil fits on old Whites Coinmasters. The plug looks the same. I have a 6000 DI series 2, whites coinmaster Thanks for the video
2:20 All of this is based on "the induced frequency is the same"
Where have you read that? I can't find it anywhere.
I picked up a 6000/DI with no dish or rod can i test it to see if it works ?
Do you still go out detecting Terry?
Hi Terry: VERY nice video. 👍
Question:
Your 1st detector, Whites 5900di, like the others was frequency tested with its circuitry case intact. It was discovered to be off frequency higher than it should be, on your Spectrum Analyzer. Its freq spike was to the right of where it was supposed to be on the units graph. So you rotated your "magic knob" to bring the spike to the left to its correct frequency position on the graph.
So, my question is that where the units case remained intact, thereby no adjustments/tweaks to the units circuitry were made to vary its frequency, it seems to me that the Spectrum Analyzer itself was adjusted to come in line with the advertised frequency of the detector, versus adjusting the detectors innards to bring it to the correct frequency position on the analyzer.
I watched the vid 3 times and keep asking myself the same question.
Am I missing something?
Help out this 1960s electronics
era (tubes/transistors) old guy.
Sam P Great question...I agree. None of the parameters of the metal detectors were adjusted to see a range of frequency or where they were sitting at. No baseline was established at all.
Michael Massa Thanks. Its nice to know I am not alone.
Hello, For this simple test, the desired center frequency is set on the analyzer, then you adjust the fine frequency adjust until the peak centers on the screen, this will be the frequency that the analyzer reports. You do not adjust the metal detector internal or external adjustments. You can do the same type test using a basic frequency counter that has a bar graph showing amplitude. The instruments are simply used for monitoring the signal. The intent was not to repair or adjust the detectors output. Hope this helps. TD
D-lab Electronics Okay, thanks Terry. Setting the "desired center frequency" and then centering the units waveform on the graphs center seems to indicate my interpretation is correct.
The main takeaway here is seeing the individual units output waveform & frequency, incorrect or otherwise.
Love your videos! I have an MXT that will not turn on. The battery pack is good and I have power to the terminals on the board. Checked with a meter. Still nothing. The battery pack was left in when it went into storage 😑. Wondering if there's anything I could try that might help. Thanks in advance.
Well, I just watched your dead 5900 video and said, ya know, lemme just get new batteries just in case.......bingo 😁
Another hobby? Electronics and treasure? Where do I find the time? Interesting video!
Yep, way too many hobbies here. Just an electronics junkie.
It looks a little deferent than yours I don't know we're two start please help
Cool video. I wonder if you couldn't do a "poor man's version of this test and wave the detector over a small output transformer or inductor coil and feed to a speaker instead of the spectrum analyzer. Then you could simply get a free smart phone guitar tuner and measure the frequency. Would that be possible?
Man, excellent idea. Your right, most people do not have a signal analyzer laying around. I am trying to locate a general purpose hand help frequency counter with a bar graph display for another demo. I will also see if the coil trick to tuner will work. There is a real lack of info out there regarding metal detector repair.
Never done it myself but I subscribe to nuggetnoggin, who is a detectorist. Younger kid. Good channel. He uses Garrett AT Pros. I know virtually nothing outside what I've learned watching his channel.
a dynamic mic on the tuner input, or perhaps just the smartphone itself under the coil should work, too ;)
TC-90 metal detector It looks the same
Terry, before I start watching the video I must tell you, the d-labamps domain is gone, Wham!
Yep, I let it lapse, due to inability to manage it.
Can you not just test the khz with a multimeter?