[Hackrf-dev] Disturb a RF signal

[Geoffrey Feldman]

Actually Chuck – Not as you state.  No, sharing facts of science is not making oneself an accessory, at least not in the free world.   In the US, what you state is not against the law.  Interfering with other services is against administrative law.  In most cases, one is asked politely to stop.  In extreme cases and when there is intent, equipment has been confiscated.  I don’t think I have ever heard of criminal penalties.

 

I also think you mis-interpreted Matteo’s request.  I think he means “Within equipment”, not in the sense of a broadcast signal.   However, in the US, one can do that, if the signal is confined within private property or so as not to interfere with another service.  I’ve done that many times, and for decades. I’ve never gotten a phone call or letter of complaint.

 

I doubt one could take a course in RF engineering without interfering with a signal, albeit in confined circumstances – but often not that confined.

 

Matteo – I have a suggestion for you.  Mike Ossman recommends this in his videos (which you should also watch).  It’s a book called “Practical Signal Processing” by Mark Owen.  I’ve found it quite enlightening and it covers many of the subjects of your questions, probably better than any of us can.

 

Geoff

 

From: HackRF-dev [mailto:hackrf-dev-bounces at greatscottgadgets.com] On Behalf Of Chuck McManis
Sent: Thursday, May 10, 2018 1:47 PM
To: Matteo Terzi
Cc: hackrf-dev
Subject: Re: [Hackrf-dev] Disturb a RF signal

 

Hi Matteo,

 

Interfering or intentionally disturbing another RF transmission (even in the unlicensed bands)  is illegal in pretty much every country in the world. Thus any help someone might offer for you to interfere with a signal would make them an accessory to that offense. 

 

Typically such interference has occurred during times of war or during espionage. Because of that the places where you might go to learn about how governments have historically interfered with radio signals is a book on Electronic Warfare available at your library or amazon. 

 

--Chuck

 

 

On Thu, May 10, 2018 at 3:03 AM, Matteo Terzi <matteo.terzi97 at gmail.com> wrote:

Hi all,

anybody know how can I disturb radio signal with hackrf?

I'd like to eliminate a certain value of frequency. I read something about the radio signal noise and I know that I should use the same frequency, same modulation and with a power higher or equal. Is it correct?

Thanks

 

Matteo

 

-- 

Matteo TERZI

Google Gmail Member


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