Can you jam an FM radio signal with a FZ?
Let’s say, hypothetically, there’s a guy who parks on your street once a week and – for some reason that no one understands and he refuses to explain – he absolutely BLASTS a butt rock radio station from his car speakers for 20 minutes at a time, so loud that it bounces off all the buildings on your narrow street and it sounds like it’s coming from every single window. And when you go out and say, “Hey dude, I’m taking a call for work, could you not do that here? Or anywhere, really?” he smirks and looks at you like you’re the one acting crazy.
Again, this is a hypothetical.
But in this hypothetical situation, could you use a FZ to jam his car radio? How? (I know that many people might call the police/311 and ask them to do something about this. That is not how I want to do this.)
Thank you for indulging this completely made up scenario.
I remember reading a story about a guy who went to prison for running a cell phone jammer on the interstate to keep people from using their phones while driving, so keep that in mind if you decide to try jamming radio signals in an area. Hypothetically.
You are correct. It is against the law because it prohibits emergency services.
Then there was that old fart who did it on a train quiet compartment https://www.cnet.com/culture/man-arrested-for-allegedly-using-cell-phone-jammer-on-train/
Have you considered just tossing a rock through his windshield instead?
hypothetically of course
Hypothetically no. You’d have a better chance with one of two ways. 1. If the radio receives RF signals someone might be able to find the correct RF signal that would allow them to change the station on a radio or turn it off and on to the point of frustration. Again this is only if it has the ability to receive rf signals and the the send/receive is in range 2. An FM transmitter with the same radio frequency that would over power the radio signal in the local area. If you have ever heard two radio signals at the same time it is because they are competing on the same band. If there was a strong enough signal close enough whatever was playing on the more powerful signal would be heard. Unfortunatly if the hypothetical person just decided to play a CD this would not help in any way. Blocking FM transmissions could be prohibited in areas based on the fact that emergency services might use them. Pressing a panic button on a car alarm is not against the law but it is very annoying to anyone around.
What’s the radio station frequency? I wonder if you’d be able to do it with one of those car fm transmitters. They’re typically limited to between 87.9 and 107.9, but they’re also limited in power to around 200 feet of range - and within those constraints it’s fully legal in the US. But sticking to the legal transmit power limit would make me feel a lot safer about not getting in trouble because if you have to transmit out of the legal frequency range, it’ll make it much much less likely someone will notice.
Flipper zero out of the box does not cover frequencies between 88 MHz and 108 MHz. Maybe a GPIO attachment and custom software like extreme. But I’m still not sure it will cover the FM band.
I wonder if we can build an FM jammer for this hypothetical situation. You know, just to see if it works.
I would be happy to contribute some money to this hypothetical effort. I wish I had skills or knowledge to contribute as well, but I’m afraid those are in even shorter supply
Maybe we can start with one of those wireless FM transceivers that allow you to connect your phone to an available radio station. Most of the time those are frequency agile. Meaning you can change the frequency to whatever you want. Now we need an amplifier to amplify the output side of the transceiver and voila, we’ve created an FM band frequency agile jammer. Hypothetically of course.
