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this post was submitted on 17 Jun 2024
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Privacy Guides
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This is the first I've heard of a dummy load. What exactly would be the purpose of replacing the antenna with a dummy load?
RF analog electronics can often be damaged if powered without the antenna load, and of those that won't be damaged, many will be able to detect and fault for lack of antenna load.
So replacing the antenna with a dummy load will keep the system operating "normally" without risk of damage, but also without actually sending data.
So you're saying that other electronics used within the car (ones that aren't damaged by the lack of antenna) may be able to detect the lack of antenna as a "fault" and thus hinder their own functionality? Also, by "antenna", are you referring to the one used for the radio? Like an Aerial? So my understanding is that giving the antenna connection a "dummy load" is a way of removing the antenna, and stopping the sending of data, without damaging or hindering any other electronics/components of the car.
Sort of.
The electronics that do the communicating could sense the lack of antenna as a fault, then indicate to other devices in the vehicle that fault. This could potentially cause the vehicle to light it's fault indicator, among any number of other things.
And by antenna, yes it could be what you think of as an Aerial, but it likely won't be the same one as for the radio (some antennas are multi purpose, but most are tuned to specific bands)