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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Metal Detecting > Metal Detecting in General (Moderators: Bugar, Ridge Runner) >

Roll your own

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Rickster Topic starter

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Radio Shack

	Roll your own « on: March 23, 2009, 12:41:56 pm »

In general, is it worth it to build your own MD? I've seen that there are schematics available (being and ET myself, this could be very appealing!!!) even in this forum. I am a very capable electronic tech, versed in the technical (theory) end of the field. I'm just not sure of the overall "burden" required to build your own.
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Homefire

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	Re: Roll your own « Reply #1 on: March 23, 2009, 02:26:27 pm »

I've built a few.

I also mod others .

Yep! Good Stuff.

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Christian

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	Re: Roll your own « Reply #2 on: March 23, 2009, 03:08:31 pm »

Hello Rick,

well, Iguess I would say it depends from what direction you are coming: If you would like to do it for the jpy of building one or learning about how it works then give it a shot! If you are in to safe some money then it would be more econimic to buy a used machine.

We have some very knowledgeable folks like Eugene aboard who will be happy to assist you with the project of building a detector.

Regards,

Christian

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Homefire

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	Re: Roll your own « Reply #3 on: March 23, 2009, 04:06:04 pm »

A few hundred years ago I built the SandBanks PI! Come to think about it I still have a Kit for one stashed away.

A Few BFO's!

Completing Mods on a Garrett SeaHunter 500. Working 10 times better on small stuff then it was.

I just enjoy using what I do.

Kinda get a charge using them around other folks with there Fancy ones finding just a much too.

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Cornelius

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	Re: Roll your own « Reply #4 on: March 23, 2009, 04:16:30 pm »

Homefire . I did not know that the Sandbanks PI came in kit form . But since you built the unit can you tell me where you got the transformer ? Cornelius

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	Re: Roll your own « Reply #5 on: March 24, 2009, 07:46:25 am »

	Quote:	Posted by Cornelius
Homefire . I did not know that the Sandbanks PI came in kit form . But since you built the unit can you tell me where you got the transformer ? Cornelius

Yep! A company called Cirkets put them out. Think I paid like 17.00 lb for it back in the 80's////
It's just a Toyo Transformer. Do you want one? I can scare one up and send it to yea!

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Cornelius

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	Re: Roll your own « Reply #6 on: March 24, 2009, 07:56:21 am »

Homefire . Yes I too have built the Sandbanks PI detector but I left the transformer out and substituted it for another 9 v supply . What I like to do is build this detector again but than following the original schematic . It will be put up with my other detectors I have built sofar . Nothing is better than having followed the original . If you can spare one of your transformers I would be gratefull . Send me our E-Mail no. to alphaor@versatel.nl ... Regards and thanks again . Cornelius ( I will make it up to you somehow )

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	Re: Roll your own « Reply #7 on: March 24, 2009, 11:34:57 am »

Cool! Need to locate my stash of old parts.

In the Schematic they listed it as YOKO 87 BX 135.

In fact the part supplied is a 87 BNS 135 BX. Color Code Yellow.

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Eugene52

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	Re: Roll your own « Reply #8 on: March 24, 2009, 11:02:00 pm »

Great work Homefire !!! A 20 year old mystery is solved on this Great Thunting.com Forum !!! I will research the part number and see if I can find other manufacturers . It would be great to find out the exact inductance ? I believe this part is a fixed transformer with a primary that is center-tapped ? Refresh my alzheimers !! Anyone else , please comment here .

Great

............. Wise

.........Eugene

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	Re: Roll your own « Reply #9 on: March 25, 2009, 08:31:02 am »

I can't find any references to the Old Toko coil numbers at all. Can't find that version in my mess.

I have a pile of other coils and sure more then one would work.

Yellow Coded ones are for 455KHz IF Work.

I would be willing to bet that almost any of them (Yellow) would work in this application.

If Not!

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http://g4hup.com/DFS/Rewinding%20Toko%2010k%20Series%20Coils.pdf

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