125khz rfid reader

Hello,

I'm using a RDM6300 rfid 125khz reader. I can read the coils, thats not a problem.

But its only read when a coil comes in. I want the reader also read when the coil is already there. In the datasheet from the RDM6300 it said there are two versions:

standard (mine) :
card can’t be read again within the range of read antenna after read once. User must
move it out of reading antenna range first, swipe card again & can be read.

special:
card can be read continuously within the range of read antenna.

Someone has the special. On ebay I saw some boards with print 'v2.0', wondering if this is the special version.

Or someone knows if there is another (cheap) reader 125 khz with external antenna? Later on I will try to switch antenna's.

antenna switsching: RFID Sequencer
datasheet: http://www.seeedstudio.com/depot/datasheet/RDM630-Spec..pdf