Reading pet RFID chips


My cat has a FECAVA type RFID chip. So far I haven’t been able to read it with the 125KHz reader I got here. I’m curious if it’s possible to modify it to be able to read that chip type.
I have a scope but not enough experience to know where I need to connect it to see some sort of signal :frowning:

Any ideas, anyone?

Update: found – this might help