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#1 2020-06-29 14:25:48

AlexFresh
Contributor
Registered: 2020-03-26
Posts: 3

Proxmark 3 RDV4 only finds card once out of many amount of times

hey all,

i am using a proxmark3 RDV4 to detect ISO15693 cards,
the problem i am facing is that when using HF search it only works a very small amount of times.
9/10 times it doesn't see the card.

and when i try to write to a block it never works cause it can't find a card:
hf 15 write * 0 03 00 00 00

this is my start up info in proxspace:

[=] Session log C:\ProxSpace\pm3/.proxmark3/logs/log_20200629.txt
[=] Using UART port com14
[=] Communicating with PM3 over USB-CDC


  ██████╗ ███╗   ███╗█████╗
  ██╔══██╗████╗ ████║╚═══██╗
  ██████╔╝██╔████╔██║ ████╔╝
  ██╔═══╝ ██║╚██╔╝██║ ╚══██╗       iceman@icesql.net
  ██║     ██║ ╚═╝ ██║█████╔╝    https://github.com/rfidresearchgroup/proxmark3/
  ╚═╝     ╚═╝     ╚═╝╚════╝   bleeding edge

[=] Creating initial preferences file
[=] Saving preferences...
[+] saved to json file C:\ProxSpace\pm3/.proxmark3/preferences.json

[ Proxmark3 RFID instrument ]

[ CLIENT ]
  client: RRG/Iceman/master/v4.9237-414-gbc00b29a-dirty-unclean 2020-06-23 07:55:43
  compiled with MinGW-w64 10.1.0 OS:Windows (64b) ARCH:x86_64

[ PROXMARK3 ]

[ ARM ]
  bootrom: RRG/Iceman/master/v4.9237-414-gbc00b29a-dirty-unclean 2020-06-23 07:57:06
       os: RRG/Iceman/master/v4.9237-414-gbc00b29a-dirty-unclean 2020-06-23 07:57:32
  compiled with GCC 9.2.1 20191025 (release) [ARM/arm-9-branch revision 277599]

[ FPGA ]
  LF image built for 2s30vq100 on 2020-02-22 at 12:51:14
  HF image built for 2s30vq100 on 2020-01-12 at 15:31:16

[ Hardware ]
  --= uC: AT91SAM7S512 Rev A
  --= Embedded Processor: ARM7TDMI
  --= Nonvolatile Program Memory Size: 512K bytes, Used: 224104 bytes (43%) Free: 300184 bytes (57%)
  --= Second Nonvolatile Program Memory Size: None
  --= Internal SRAM Size: 64K bytes
  --= Architecture Identifier: AT91SAM7Sxx Series
  --= Nonvolatile Program Memory Type: Embedded Flash Memory

here is the HW tune feedback:
[=] Measuring antenna characteristics, please wait...
[/] 10
[+] LF antenna: 37.17 V - 125.00 kHz
[+] LF antenna: 26.59 V - 134.83 kHz
[+] LF optimal: 36.99 V - 123.71 kHz
[+] LF antenna is OK

[+] HF antenna: 36.28 V - 13.56 MHz
[+] HF antenna is OK

i would appericiate any help!

Last edited by AlexFresh (2020-06-29 14:27:08)

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