Our low frequency PCB antenna is specifically designed for the Proxmark III. It is tuned to operate at 125kHz and 134kHz and is capable of reading proximity cards at a distance of 4cm.
When connected to a working Proxmark, the antenna registers approximately 13-15V in the 125kHz coil and 14-18V in the 134kHz coil (as produced by the `tune` command).
The antenna measures 10.5cm in diameter and ships with a 3' Hirose USB cable that is used to connect it to a Proxmark.
Low Frequency Antenna
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