Okay, this is new (Originally posted on Thursday, January 30, 2020)

 

Sorry that I was out cold for a long time now. Was just packed in-between a lot of stuff. So in the next coming months, we will be deep-diving into some arcane concepts with regards to radio their hardware and their software and to make one and break one that you have made(apparently it's still illegal to break other people stuff as much I want to do it). So we will be concentrating on all parts of the system in aspects of hardware, software if the wretched thing has a elinux in it then that as well.

Comments

Post a Comment

Popular posts from this blog

Software Defined Radio (SDR) 101(Originally published on Monday, June 8, 2020)

  Software Defined Radio (SDR) 101. What is an SDR? A Software-Defined Radio(SDR), is a radio environment that has all the front end devices(amplifiers, mixers, IQ units, CPLD, mod/demod equipment) in hardware and the operation of all these equipment including but not limited to signals processing is done using software.   How is it useful? Consider this scenario you are behind lines somewhere in a godforsaken land, and you need to have a very re-programmable front end and flexible signals processing software that can be swapped at will. Et Voila enter SDR, change the software, and modify the front end code you got real-time signals intelligence on the field.   Apart from that in the civvie world, it's used for the analysis of radio signals be it sub-1-GHz systems and analysis and security assessment of wireless systems.   Some SDR. RTL-SDR, cheap effective for understanding stuff regarding SDR and it's accompanying software which is mostly GnuRadio Companion(GRC), L...
Read more

Understanding IQ in Communication Systems: Complex Numbers (Originally posted on Wednesday, October 14, 2020)

Image
So, as far as this blog goes this is not going to be one of those other blogs where profanity runs amok (though it can be, and it will be in some points here and there). The concept of signals and application of IQ data in communication system math in our area is rather a in-depth and detailed concept heavy area. Like IQ modulation has it's roots in complex numbers, and how actually these things play a role in defining digital modulation concepts and how constellation points are actually defined in IQ mode, and what does that mean as an equivalent in it's analog domain. But first things as they go, understanding what is an complex number is an essential part of this blog post an not-so brief introduction is given here. At this point I frankly don't know how I am split up these parts and publish as an blog post article, but I'll make a decision about it as I go through that bolg post. Now with the second part of this. The following article can be considered a the theror...
Read more

Recovering clock from Arduino.(Wlessly) (Originally published on Sunday, March 22, 2020)

Image
  So with our previous post, we got a very basic introduction to EM and EMI. This post will concentrate mostly on hands-on working into EMI and data recovery from EMI. For this I am using a simple arduino, and trying to recover some clock signals that occur in the arduino. Now with my arduino uno the clock is 16MHz, and one can observe a harmoic @ the multiples of fundamental frequencies, so a simple test with your probe at those frequencies we will have peaks in the FFT spectrum. The images are attached below. So the above attached images are the clock at the original frequency and it's odd and even harmonics, usually in MIL and AVI class equipments and instruments this type of harmonics is suppressed without mercy ruthlessly, like the same way conquistadors captures Mexico city ( https://www.pastmedicalhistory.co.uk/smallpox-and-the-conquest-of-mexico/ ), I mean it took them 3 years to erase the entire fucking race for the race and urge for gold and the possible fountain of youth...
Read more