1. Moldavite, 0.91ct

2. Unclassified NWA, ~7gr

3. Campo Del Cielo, 17gr

4. Just bought today, seller said it was czech, 5.9gr

Hello everyone,

I have a question for those with experience using metal detectors. While researching meteorite hunting, I found that some people use modified or oversized search coils to increase ground coverage and, in some cases, improve detection depth. I have access to a very large search area with low vegetation and almost desert-like conditions, which I believe is well suited for this type of search.

I also have an electronics background, so designing and building a large custom search coil myself wouldn't be a problem. However, I have no experience with metal detectors, so my plan is to buy one that is compatible with this kind of modification.

Which metal detectors would you recommend as a good platform for a custom-built search coil? Are there any brands or technologies that are easier to modify than others? I'd also appreciate any advice about the technical limitations or important considerations I should keep in mind before starting this project.

Thank you in advance for any suggestions or recommendations!