White's TR Series 2 mod project.

[ysabxe]

I gues my Cscope TR 200 see coins deeper than this mode, may be someone show test on video?

[dfbowers]

The Whites TR is not really “Transmit Receive” It’s off resonance as far as I can tell. It has no ability to discriminate either.
I will post additional videos here later today.
Don..

[dfbowers]

Here is a little video of my second build. 6 -8” max for a 7” coil. All metals respond as there is no discrimination. This circuit responds most favorably to low conductors and will beat some of the low end PI machines like the Pirate PI.
it’s super stable, pleasant sounding and rejects ground response somehow..

https://youtu.be/AoSlGBBYKtQ

[MartyJ1963]

@dfbowers,,Can't view your video. It says 'Video unavailable' - this video is private. Really would like to view this video as I built your version and it works great! Thanks, Marty.

[6666]

Ditto, private video

[bernte_one]

meanwhile the standard setting at youtube after upload a video is "privat"
go to setting and select the "public" option

[dfbowers]

meanwhile the standard setting at youtube after upload a video is "privat"
go to setting and select the "public" option

Sorry.. It's public now..
Don.

[ysabxe]

Hm... why no minimal Disc. like TR 200 have? May be you need to do DD coil for that?

[MartyJ1963]

Thanks for the Vid! Regards, Marty

[dfbowers]

Good question for the experts. You would expect that from an off resonance detector.
Also, how ground rejection works. I don’t know.. but it does.

[SVEN1]

Just rec'd a couple small enclosures to use with mine.

[MartyJ1963]

Nice one Sven, I put mine in the same enclosure,,,fits nice and dainty! Regards, Marty.

[kt315]

Just rec'd a couple small enclosures to use with mine.

[ATTACH]53711[/ATTACH]

your ruler in metric side is amazing LOL!

[kt315]

it is mine one. just for a comparison.

[SVEN1]

At work, I use a metric caliper to measure down to 0.01mm. An do use metric rulers like you have. So yeah, the yellow inch-cm ruler I just grabbed off the shelf for the picture. Makes it easier for those that don't use the metric system.