Our high frequency PCB antenna is specifically designed for the Proxmark III.
It is tuned to operate at 13.56mHz and is capable of snooping the UID of a Mifare 1k classic card at a distance of 3cm.
The antenna can be switched to match either a 100pF or 47pF capacitor on the HF circuit of the Proxmark. When connected to a working Proxmark, the antenna registers approximately 8-9V (as produced by the `tune` command).
The antenna is the size of a credit card and ships with a 3' Hirose USB cable that is used to connect it to a Proxmark.
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