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#1 2014-12-11 10:20:48

hamdycam
Member
Registered: 2012-03-29
Posts: 7

Antenna for 14443 type B tags (srix4k)

Hi,

I need to build an antenna for srix4k, can help me?

do I have to hfa-small.png

but reading is very poor, and often fails. Anyone have information to create my own antenna for better results?

thanks.

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#2 2014-12-11 11:43:26

asper
Contributor
Registered: 2008-08-24
Posts: 1,409

Re: Antenna for 14443 type B tags (srix4k)

Have a look here and here.

Last edited by asper (2014-12-11 11:53:56)

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#3 2014-12-11 18:07:46

hamdycam
Member
Registered: 2012-03-29
Posts: 7

Re: Antenna for 14443 type B tags (srix4k)

asper wrote:

Jonor you are right, that small antenna works GREAT with small tags! Thank you man !!!

thanks.

I created my antenna with 6 laps and Cable 1.2mm . The voltage is too low ... but I read more or less well (25 % of the time correct reading ) .

As I can improve it ?

proxmark3> # LF antenna:  0.00 V @   125.00 kHz         
proxmark3> # LF antenna:  0.00 V @   134.00 kHz         
proxmark3> # LF optimal:  0.00 V @ 12000.00 kHz         
proxmark3> # HF antenna:  3.00 V @    13.56 MHz         
proxmark3> # Your LF antenna is unusable.         
proxmark3> # Your HF antenna is marginal.   

img20141211175745.jpg

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