identificationRF
I'm trying to disable the receiver circuit on a garage door opener due to security concerns with the old rolling code algorithms and can't identify this component. I've seen these before but I'm not sure what it is or what its purpose is.
Regarding disabling the receiver circuit. I've already un-soldered the antenna and a resistor to the antenna with no positive results.
Thanks!
1)place to look eqn 9 is what you'll need.
2) no exceptions, unless you get a registered device and go through that hassle -> or move to ISM band
3) they get away with it but not being able to connect at those distances. The power limits are there to limit the locality.
Looking through the Microchip KeeLoq "code hopping encoder designed for secure Remote Keyless Entry (RKE) systems" datasheets, I'm 99% sure that this is one of them, either rebranded for a customer, or a close custom version.
Look for the HCS3xx series. The Packaging Information for those chips show the top code use. 33192c would be the end user custom code.
Best Answer
That's a variable inductor, probably part of the RF tuning circuit.