I have a 10 day old NExT install which feels very well settled now but I still really struggle to get a read on the LF side with my Proxmark3.
The HF side reads perfectly well with no problems and did after a day or two after install however I’ve only had a successful read (
lf search) maybe once or twice with the flat antenna but never with the ProxLF and when I try a
lf tune I can’t get the voltage to budge at all, except maybe 100mV sometimes but honestly not sure if that’s just noise or something else going on.
I can read other flat cards with the ProxLF no problem if I line up the card antenna perpendicular to the ProxLF coil as you would expect. Both
lf search and
lf t5 detect - no problems. My LF field detector keyring shaped like an implant lights up nice and bright too.
Am I just being too impatient or is something wrong?
[usb] pm3 → hw version
[ Proxmark3 RFID instrument ]
[ CLIENT ]
client: RRG/Iceman/master/v4.9237-3970-g899f269a9 2021-06-02 17:55:15
compiled with Clang/LLVM Apple LLVM 12.0.5 (clang-118.104.22.168) OS:OSX ARCH:x86_64
[ PROXMARK3 ]
external flash… present
smartcard reader… present
FPC USART for BT add-on… present
[ ARM ]
bootrom: RRG/Iceman/master/v4.9237-3970-g899f269a9 2021-06-02 17:55:54
os: RRG/Iceman/master/v4.9237-3970-g899f269a9 2021-06-02 17:56:12
compiled with GCC 10.2.1 20201103 (release)
[ FPGA ]
LF image built for 2s30vq100 on 2020-07-08 at 23:08:07
HF image built for 2s30vq100 on 2020-07-08 at 23:08:19
HF FeliCa image built for 2s30vq100 on 2020-07-08 at 23:08:30
[ Hardware ]
–= uC: AT91SAM7S512 Rev A
–= Embedded Processor: ARM7TDMI
–= Internal SRAM size: 64K bytes
–= Architecture identifier: AT91SAM7Sxx Series
–= Embedded flash memory 512K bytes ( 60% used )
hw tune (ProxLF)
[usb] pm3 → hw tune
[=] ---------- Reminder ------------------------
hw tune doesn’t actively tune your antennas,
[=] it’s only informative.
[=] Measuring antenna characteristics, please wait…
[=] ---------- LF Antenna ----------
[+] LF antenna: 27.71 V - 125.00 kHz
[+] LF antenna: 26.01 V - 134.83 kHz
[+] LF optimal: 28.34 V - 127.66 kHz
[+] Approx. Q factor (): 4.1 by frequency bandwidth measurement
[+] Approx. Q factor (): 4.9 by peak voltage measurement
[+] LF antenna is OK
[=] ---------- HF Antenna ----------
[!] HF antenna is UNUSABLE
(*) Q factor must be measured without tag on the antenna
[+] Displaying LF tuning graph. Divisor 88 (blue) is 134.83 kHz, 95 (red) is 125.00 kHz.
[!] You appear to be on a MacOS device without XQuartz.
[!] You may need to install XQuartz (https://www.xquartz.org/) to make the plot work.