Surf PI that likely will be apprehended....

[6666]

Nezocas
Thanks,
thats a great result on your gold ring for a 200mm coil , what coax did you use to connect the coil ?
your video should be used as an example of a well built surf Pi.

[Nezocas]

just normal RG06, that costs no more than 0.30€ / meter

[6666]

Nezocas
Thanks for the cable info, I have not seen RG6 with a white outside sheath on it before,
Just wondering why the Portuguese legislation does not allow detection on the beaches ?

[Dixix]

My Surf PI

I also bought the fine kit from Silverdog . It was difficult for me to find a suitable housing for the circuit . So I built it myself. Made of aluminum sheet.
There was a problem when installed in the housing. Every time the circuit was installed - nothing worked. I was almost in despair ....
I have searched persistently for the cause.
It was the metal housing.
The headphone jack must not be connected to the "ground" (metal housing). After isolation of the Headphone jack -- the Surf PI works perfectly!
I love it. Nice small and fits perfectly to the detector - rod.
Dirk

[6666]

Great job Dirk
now what are you going to use for the coil housing ?

[Dixix]

The coil I want to installed in a coil housing from Georgi Zehlev.
But I still do not know how I can shield the coil. So I will only test "without anything." (Resin, etc) Maybe the Surf PI works even without shield ....
we'll see
Dirk

[joop]

Yes, it will work without a shield, but you will notice that your detector will react to ground minerals. For a simple shield you can use graphite spray. it is not cheap, about 12 euro for a can...

[Impulsive]

Shame about Portuguese beaches. Anyone thinking about Cyprus, forget it. There used to be little problem on the land, and no problem on the beach or wading, not so now. Total ban on detecting on the land and in the sea. Some beaches are o.k. but only with written permission for which to need to apply on the appropriate application form, and supply proof of no criminal convictions. Penalty is 3 years in prison and/or 30,000 euros fine (plus they will probably confiscate your detector so the police can use it themselves !). Check it out at www.mcw.gov.cy/da then look under legislation, then The antiquities (amendment) law 2012 for details and form. Justification is just in case there might be another submerged city like Pavlopetri. (Check it out, fascinating).

[Nezocas]

Laws completely ridiculous .... any country, would benefit from the taxes from sales of metal detectors and even more with the possible licenses to its growing use .... if allowed ....!!
I'm ashamed to be Portuguese

[Dixix]

Hi Joop
Yes. I know the Graphite - Spray (CONRAD). I have read much in this forum about shielding. There are so many materials (Mylar, lead tape, copper tape, aluminum foil, etc).

Mylar I have tried. (Space blanket). But it does not conduct. I tested it with a continuity tester.
Kitchen aluminum foil I have also tried - coil has a very damping. A few inches deep loss ....

HOWEVER, I got me a couple of weeks ago, fine graphite - bought powder. Very Inexpensive. I will mix it with boat varnish.

Whether shielding even in flat spiral coil works ...?
Dirk

[Dixix]

Hello Nezocas and Imulsive
It is sad that it is illegal in Portugal to look at the beach. Search on the beach make fun ... (euros, jewelry, etc). The law is not to be understood.
But is it right (with the help of metal detectors) to prohibit illegal excavations on historic cultural sites ....
Why must always fall into the extremes of the legislature ....?

regards
Dirk

[Impulsive]

Unfortunately, it's the same in all walks of life, the many suffer for the indiscretions of the few. Funny how the local council can dredge tons of sand out of the sea and dump it on the beach without damaging any archaeology ?!At least the local guys had a golden field day for a short while. Dave.

[Waikiki_Sweep]

What led me to try to find information about a homemade metal detector, was the Portuguese legislation, because it does not allow detection on the beaches.
Do not wanna lose my GoldmaxxPower V4 or my Minelab Explorer SE, to the cops and still carry a heavy fine.

Good idea to use in your country: Slippers are equipped with metal detectors can sense the metal object. It is powered by a 9V battery to sustainable work for 6 hours.




I would like to be invisible on my beach too because of 100's questions spectators asking every day. Probably I will start from invisible bone conduction headphones

[Dixix]

Genial idea with the sandals! (Although the plug bottom right will not hold long in real use, I think).
If I can something can build myself ...? Certainly.
A little flat coil with a shoe insert. best glue with silicone. I will certainly try.
No more stupid questions from viewers on the beach ...
Is an IB or a pi detector? Ferrous and non-ferrous discrimination would be important.
Dirk

[WM6]

My holidays beach "invisible" solution with Nokta RS pinpointer in vibro mode: