LF of NExT Implant not reading after 3 Weeks, HF Works

[landwirt]

I can read/write the HF side without Problem using my Phone and the PM3 Easy.
I want to use the LF side for Access Control, Vehicle Start, etc.

Unfortunately, I have no bigger Reader than the Proxmark3 Easy.

For a custom Ferrite Core Antenna, I found this thread:

DIY LF antenna for Proxmark 3 Easy

Hey everyone! This post isn’t a tutorial, but theres a lot of things you’ll be able to take away from this if you’re wanting to build you own. Figured if I’m already making one, I may as well share my journey and write it up for those playing along at home! Thanks to @TomHarkness for getting me on the right track with this - without further ado, let’s get this project started! [IMG_0126] Supplies acquired! @TomHarkness suggested 9mm ferrite rod and 0.25mm enamel wire as a place to start, wit…

Before going through all that trouble of Optimizing and buying the parts I need for that project, I would consider just buying the pretested Version of the RDV4 and ProxLF antenna, they should (I hope at least) work definitely.