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#1 2015-06-01 16:05:13
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,537
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T5 transponder trace.
Hi,
Ref Trace:: https://www.sendspace.com/file/oegvlf
It is supposed to be a T5 transponder chip, but I don't know how to read it..
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#2 2015-06-02 02:38:31
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: T5 transponder trace.
it appears your tag is outputting 128 0 bits (or 1 bits i suppose).. there appears to be a "marker" between the transmissions. remove the first of those (ltrim) and data rawd am ...
it will output a 7 when it hits the "marker" as the marker isn't a proper manchester wave.
Last edited by marshmellow (2015-06-02 02:47:03)
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#3 2015-06-02 02:40:36
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: T5 transponder trace.
we could use the em4x50 read i fixed as a guide and make a similar demod for this, as it had a similar "marker" between blocks.
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#4 2015-06-02 02:42:21
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: T5 transponder trace.
btw, the read looks very weak, so either chip has a small or weak antenna, or your lf antenna is weak, or 134khz?
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#5 2015-06-02 08:06:25
- iceman
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- Registered: 2013-04-25
- Posts: 9,537
- Website
Re: T5 transponder trace.
Its a small small glasschip, like they have inside car keys I guess. 10mm x 2mm so yes the antenna signal will be somewhat weak.
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