ELB149C5M. 125K RFID Reader

Just wanted to note one thing I found out experimentally.
One can make his own antenna for this unit by winding an air-core coil that has 450-500 microhenries. However doing this accurately requires an inductance bridge.

I have access to one at work so I was able to make an antenna with a 10" diameter.

Sounds good.Could you show us some pictures about your experiment here.