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#1 2011-08-31 11:07:32
- cormas
- Member
- Registered: 2011-07-25
- Posts: 5
Antenna 125Khz strange behaviour !
I made 2 different 125 khz antennas.
In reading there are no problem but i have problem with the emulation with command
lf em4x em410xsim 29006f1059
This antenna have better parameter (23,77v) but doesn't work in emulation
# LF antenna: 23.77 V @ 125.00 kHz <---------------------
# LF antenna: 21.89 V @ 134.00 kHz
# LF optimal: 26.45 V @ 127.66 kHz
# HF antenna: 9.76 V @ 13.56 MHz
This antenna is worst but work in emulation (10,34v)
# LF antenna: 10.34 V @ 125.00 kHz <------------------
# LF antenna: 16.38 V @ 134.00 kHz
# LF optimal: 24.71 V @ 141.18 kHz
# HF antenna: 9.76 V @ 13.56 MHz
So I want to know your opinion about this strange behaviour ..
this is my portable PROXMARK with size of card and double antenna (125khz & 13mhz)
Last edited by cormas (2011-08-31 11:23:17)
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#2 2011-08-31 18:43:53
- spinoinside
- Member
- From: Italy
- Registered: 2010-02-06
- Posts: 14
Re: Antenna 125Khz strange behaviour !
Nice cormas 
i'm think your problem is a different version of the client and core
Last edited by spinoinside (2011-08-31 18:45:18)
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#3 2011-08-31 21:15:12
- cormas
- Member
- Registered: 2011-07-25
- Posts: 5
Re: Antenna 125Khz strange behaviour !
Nice cormas
i'm think your problem is a different version of the client and core
I am not agree because version of client and core are always the same ... I just change antenna and the worst work instead the other doesn't work also if it has the beter parameters
proxmark3> hw version
#db# Prox/RFID mark3 RFID instrument
#db# bootrom: svn 486-suspect 2011-07-11 02:33:09
#db# os: svn 486-suspect 2011-07-11 02:33:22
#db# FPGA image built on 2009/12/ 8 at 8: 3:54
the bin of client is r486
PS: ciao Andrea
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#4 2011-08-31 21:26:50
- cormas
- Member
- Registered: 2011-07-25
- Posts: 5
Re: Antenna 125Khz strange behaviour !
I made other test so I modify the antenna that I called worst (this was parameter:
# LF antenna: 10.34 V @ 125.00 kHz <------------------ 10,34
# LF antenna: 16.38 V @ 134.00 kHz
# LF optimal: 24.71 V @ 141.18 kHz
# HF antenna: 9.76 V @ 13.56 MHz )
I add some coils to have a beter signal so now the antenna has this new parameter and it doesn't work anymore in simulation
# LF antenna: 21.75 V @ 125.00 kHz <-----------------------21,75
# LF antenna: 19.87 V @ 134.00 kHz
# LF optimal: 24.57 V @ 127.66 kHz
# HF antenna: 9.73 V @ 13.56 MHz
Can I think that beter is signal and worst is the functionality in simulation ??????
1) Tha size of antenna is the same
2) The version of PROXMARK is the same
3) the LF FEED is always the same
PLEASE IF YOU READ THIS POST CAN YOU TEST THE COMMAND "lf em4x em410xsim 29006f1059" AND SEND THE OUTPUT
OF YOUR "hw tune" !
Thank you
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