2 Box coil on a P.I detector

[detectormods]

Who was it who had a 2 box coil assembly? Was it Garrett with the old A2B?

Who wants to try one one a high power Pulse induction detector? Theory is the same but the depth would be outstanding....probably would cause severe interference for miles.

[fordranger]

Who was it who had a 2 box coil assembly? Was it Garrett with the old A2B?

Who wants to try one one a high power Pulse induction detector? Theory is the same but the depth would be outstanding....probably would cause severe interference for miles.

Detectormods... What kind of pulse Induction detector that can real deep??/....Fordranger

[detectormods]

A 2 coil arrangement will work on any P.I detector, i may make a 2 box up and test it out as i am curious on how well it would work.

[mikebg]

Almost Orthogonal Loop Configuration

To VK3KCG (Peter)
Hi Woody.au
The correct name of TWO BOX loop configuration is "Almost Orthogonal" or shortly "orthogonal". The picture shows in use mine detectors model MIL D1/DS designed in Italian company CEIA. When both "boxes" are adjusted in induction balance, they are not exactly orthogonal. Each "box" has overall diameter 280 mm.
The (R)EMI group experimented as search oscillator for BFO metal detector an almost orthogonal loop configuration with larger TX coil (overall diameter 520 mm) and two 250 mm RX coils connected as TWIN LOOP. The experiment shows that the configuration can be adjusted in wideband induction balance (2kHz - 20kHz) if the TX coil is made of Litz wire. That means the configuration is suitable and for PI metal detector.

[fordranger]

A 2 coil arrangement will work on any P.I detector, i may make a 2 box up and test it out as i am curious on how well it would work.

Hello DetectorMods.... Can you please state your e-mail add ..I can't find it in your link...Thanks..

[mikebg]

Fordranger, it is written in his site:
"Contact : detectormods (at) gmail.com The (at) = @ Its to stop spammers. You can also contact me via my Ebay username Metaldetector on Ebay.
Woody"

[fordranger]

Fordranger, it is written in his site:
"Contact : detectormods (at) gmail.com The (at) = @ Its to stop spammers. You can also contact me via my Ebay username Metaldetector on Ebay.
Woody"

Hi Mike... Thanks for the info...

[WM6]

To VK3KCG (Peter)
Hi Woody.au
The correct name of TWO BOX loop configuration is "Almost Orthogonal" or shortly "orthogonal". The picture shows in use mine detectors model MIL D1/DS designed in Italian company CEIA. When both "boxes" are adjusted in induction balance, they are not exactly orthogonal. Each "box" has overall diameter 280 mm.
The (R)EMI group experimented as search oscillator for BFO metal detector an almost orthogonal loop configuration with larger TX coil (overall diameter 520 mm) and two 250 mm RX coils connected as TWIN LOOP. The experiment shows that the configuration can be adjusted in wideband induction balance (2kHz - 20kHz) if the TX coil is made of Litz wire. That means the configuration is suitable and for PI metal detector.

Hi mikebg,

can you post block diagram about this here? Thanks!

[mikebg]

Hi mikebg,

can you post block diagram about this here? Thanks!

Hi WM6,
The title should be "2 box coil on a BFO detector", but more correct is "Orthogonal loop configuration in search oscillator".