Md coil technology

[chizm]

Md coil technology:
Since there is a need for better coil performance and penetration, is it possible to add a MOD such as an amplifier circuit before the coil to make it more powerful, diodes, caps and or any other electronics? If possible at all.
thanks
cHz

[treasurehunter747]

cHz,
When you amplify the signal going into the ground you also amplify the noise coming back from the ground so it doesnt really help. To much amplification can overload the front end circuit and cause the detector to be very erratic...

[homefire]

Noise and Blinding Minerals in the Earth are the limiting factors.

[Koala]

Doesn't moving the preamp off the main board into the coil help. Amplifying the week signals before looses and noise introduced by the cable.

[Skippy]

An in-coil pre-amp puts less demand on the cable, I'm sure. Issues like cable microphony are less of a problem, and the shielding doesn't need to be so good, either. It could potentially allow more noise-resistant signal transfer, if you used a differential-output pre-amp, and sent it down the cable on a (shielded) twisted-pair.
Another advantage of having amplification inside the coil is you can choose the gain to suit the coil, so you could make a small 5 inch coil with (say) double the gain of the stock 10 inch coil, to make up some of the sensitivity loss.

But plenty of high-end machines manage with no pre-amp, so it's certainly not essential. If yo use good cable, and quality connectors (this is where many manufacturers cut corners) the simple way works fine.

[DonCaffeDelaSkobalj]

The only way to over boost detector depths on the current level of technology is Nitrogen cooled Front End Receiver.
We should put Front End receiver in Cryogenic Cavity.



Cryo Supplies and Accessories:

https://www.emsdiasum.com/microscopy/products/cryofixation/cooling_chamber.aspx

[DonCaffeDelaSkobalj]

Russian Verba 9K333 Man-Portable Air Defence System


The seeker has two detectors - a nitrogen cooled MWIRInSb detector for detection of the target and uncooled PbS SWIR detector for detection of IR decoys (flares). The built-in logic determines whether the detected object is a target or a decoy.

On the picture frontlet cylinder is Nitrogen cooled Cryogenic Chamber with InSb detector inside.

On this way dramatically suppression of all kinds of noise was solved on genius way.

Put front end receiver inside Cryo chamber and boost detector depth 200%-300% !!

Or most better put whole electronic pcb inside chamber and GOLD is going up.

[scs]

Usefully...

[DonCaffeDelaSkobalj]

Братко scs много полезно за дълбоко търсене. !!


Very good for deep hunting !!