New Year, New LRL

[Clondike Clad]

I seen it alll

Anyone who knows metal detector circuits.
PLEASE TELL ME WHAT DO YOU SEE.

[zenit52]

Hi Dear Geo...

Hi Dear Geo,
This LRL seems very interesting,
Do you test it ?!!! How it works ?
Please put schematic and for information about it...
With best regards...zenit52

[Esteban]

Anyone who knows metal detector circuits.
PLEASE TELL ME WHAT DO YOU SEE.

This is not problem. Receiver part of MD can be used as absorptive electronic LRL.

[Esteban]

Geo

Also you can try spiral. This is very good. But make this is some difficult (consume more time).

[Esteban]

You can see before painting (barnished) trough magnifier.

[Esteban]

My technic

My technic. Use small circular form in center, make a hole between plastic form and wood (for to pass the wire) and start winding and paste time to time and in a many parts during windings. Some difficult... Care with your fingers with this type of glue...

Also I think this can very good for PI detectors. In this sample I use wire 0.70, 71 turns in a form 12.5 cm. The coil is 11.5 cm. This results in real 0.7 ohms (tester shows 0.9, but 0.2 ohms is resistence of cable). Inductance is 210 uH.

[Geo]

Hahaha....
Sorry but now i have not time!!!! maybe tommorow
Regards

[humhum]

Hi Esteban, can I search (try) with my absorbtion ferrite sensor device in winter time?
Favourable whether it will work ?

[Esteban]

Hi Esteban, can I search (try) with my absorbtion ferrite sensor device in winter time?
Favourable whether it will work ?

Don't know, we don't have ice or snow climate here...

[humhum]

Don't know, we don't have ice or snow climate here...

Ok , thank you Esteban.

[Geo]

Geo , The hundreds of turns of copper enamel wire is to give more gain for the small telescoping antenna ?? , and is it somewhere in the KHZ range , Ground waves maybe ?? Does it Transmit a signal , or does it just recieve ? Please let us know more !! And have a Great Birthday !!!!!!!!!!!!...............Regards..........Eugene 52

Hi Eugene.
Reasons are two. First as you say....... and second bacause this coil has very good directionality.
It can work with a small coil as chock but not so good sensitivity.
Also if i will use a normal smaller coil with a ferrite as radio coils then i have problems with the earth magnetic field (south-north).
It use transmit and receive.
Thanks for your wishes
Regards

[Geo]

Hi Eugene
How are you? In my opinion, Seem as big coil with big XL series with antenna,
For increase antenna XL. It is tuning at low frequency and maybe only VLF
Receiver.
Best regards

Hi Aft.
It transmit at 300Khz via a crystal oscillator.
Receive frequency is adjustable !!!!!!
The shematic is secret for the moment.... sorry
Regards

[Geo]

Hi Dear Geo,
This LRL seems very interesting,
Do you test it ?!!! How it works ?
Please put schematic and for information about it...
With best regards...zenit52

Hi . I make some small tests at my garden. The weather is not good , many rain so i can't go to the farm for a big, good test.
Sorry, no schematic
Regards

[Geo]

Geo

Also you can try spiral. This is very good. But make this is some difficult (consume more time).

Hi Esteban.
Thanks for the photo.
Do you use this coil inside the head of your red pistol????
Maybe my LRL has the same prinsiple with your pistol
Regards

[Esteban]

Hi Esteban.
Thanks for the photo.
Do you use this coil inside the head of your red pistol????
Maybe my LRL has the same prinsiple with your pistol
Regards

No, the red pistol is inside a BFO.

This spiral I use in absorptive magnetic type. I found with it silver items, old riffle 7.62 cartridge only gove one beep, but for silver is good. Also buttons platted gold, etc. I think is the king of coil for this use (receiver-absorptive). But I think your conic version is good for transmitter. Also I use the conic type (I post the pics months ago).


Regards

Esteban