Proxmark3 RVD4 amplifier

Support
1

Hello
I need to know what type of amplifiers are used in the proxmark3 RVD4 for LF antennas? I want to increase the distance, so that I want to replace amplifier with higher power amplifier. I have schematic but I cannot recognize the ICs. I might have old schematic.

Thanks in advance for any helping

2

have you considered other antenna options for increased range?

What exactly are you trying to read from a distance?

What sort of distance?

What about a DT PM3 RDV4 LF Antenna

More Information, will mean we can help more…

3 Likes
3

I am working on academic research for reading mice ID. I want to read small capsul glass rfid tag in 7 cm. I could with other readers, but not with proxmark. I need to know about driving coil IC and how to put amplifer before coil.

4

photo_2025-03-19_11-16-52
photo_2025-03-19_11-16-52960Ă—1280 221 KB

There are two driving coil ICs, but its part not mentioned in the schematic

5

A proxmark3 the definition of overkill for reading animal chips. I would start with something more simple like this;

2 Likes
6

Thank you so much