Lost fob for keyless car door locking system
wrote:
Get a spectrum analyzer, set it to sweep from about 170 to 500 MHz,
put fresh batteries in the remote, put the remote next to the spectrum
analyzer input, and start pushing buttons on the remote. You will see
a spike on the spectrum analyzer display when the remote is
transmitting. Narrow the sweep on the analyzer to find the exact
frequency.
** A radio scanner will do exact the same job.
Use the wide band FM setting to find the signal, narrow FM to get it within a few kHz.
Not that knowing the exact *frequency* is ANY use at all to the OP.
You colossal ******.
.... Phil
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