perfect, we are waiting to order one !

On the 112 post, we see the Payalneg RC4 transponder, so why your decoder don't support RC4 ?
I have some rechargeable transponders, and they haven't the same preamble than personal transponder : valid signal don't go up.

So, the howard decoder does not support RC4 and rechargeable chips because preambles are different?

For the SPI converter problem, Have you stopped your research?

Today only 8 bits are decoded by the microprocessor, D7 to D0 are used by the decoder preamble and not by the microprocessor, is it correct ?

thanks.