Car key fob (IR) What is the infrared Carrier Frequency?

Question

I know that Household infrared remote controls for example Tv's and Radios/Sterios are typically 38-40khz but what would an Infrared Key fob for a car be?

The car is a Rover 820 but i'm sure they are all along the same lines

Other car that have them from what i can remember are some fords like Puma's and other rovers like 600's

Answer 1

Infrared is LIGHT, there is no "carrier frequecy". There is a pulse code that causes the IR LED to flash at a rate that is decoded by the receiver.



Key fobs use UHF radio frquencies around 303MHz. The exact carrier frequency can be found by opening the fob and looking. To know what group of freqs are assigned, go to the FCC's web site www.fcc.gov, search for FCC ID numbers, enter the FCC ID number from the fob, the FCC site has the tech specs as they were presented to the FCC for testing to get the FCC Certification.

Answer 2

Car Key Frequency

Answer 3

BoB is wrong about IR. A carrier is used to modulate the data on, with IR remotes.



BoB is right though about car and garage remotes usung RF in the 300 to 400 Mhz range.

Answer 4

My '92 Jeep would not have an alarm and individually, i think of they're a waste of time. i've got considered too lots of them going off as a results of fact the vehicle gets touched or bumped or the wind blows too not common and that i've got observed the human beings enormously plenty overlook approximately them. My neighbor's used to pass off interior the midst of the night and it only P|ssed me off as a results of fact it became into in basic terms the wind. They pass off so relatively that it is the "Cry Wolf" syndrome. BTW, I save my keys on a hook by way of the front door. I asked the question under and seems that it would be a moot element if the vehicle alarm DID pass off. .... Sorry