NEW TIRE PRESSURE MEASURING SYSTEM IS EMI PRONE
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As if BPL was not enough for hams to worry about, now comes word of a new vehicle tire 
pressure monitoring system on luxury cars in Europe and the United States that is far 
from interference proof. The system operates in the 70 centimeter ham band using a 
frequency of 433.92 MHz to communicate between the tires and a monitor receiver mounted 
in the dashboard.
Recent tests conducted by the Korean Amateur Radio League found that this system is 
at the mercuy of radio frequency interference ingress. K-A-R-L noted that the system 
is seriously affected by any amateur station transmitting on or near the frequency at 
close range. The transmitter does not even have to be mounted in the vehicle for the 
interference to occur. Oh yes, 433.92 MHz is that same frequency also under consideration 
worldwide for remote keyless vehicle entry systems.
AR-Newsline