Scott Gardner, Comm Engineer
About Me: I am a Communications / Network Engineer I have over 39 years experience working for the Air Force. I have worked on Ground to Air and Land Mobile Radio systems. I have also spent the last 15 years working on Networking systems. I set up this site to provide information to the class I am teaching at SWIC on Communications Electronics as well as my EET121 class semiconductor basics , so it will not be fancy, but may be useful. I hold a Professional Engineers license in Illinois.
NIST Link Budget Calculator
A link to a useful program called "convert" by Josh Madison , drop it on your desktop
Satellite Link Budget Calculator
Another Satellite Link Budget Calculator
An RF Engineering Site Chock Full of useful tools
A set of Link Budget Spreadsheets for various RF systems
A paper to help you determine slant range, and look angles
A good website that explains orbital dynamics(for you who want to be astrophysicists) http://astronauticsnow.com/vp/index.html
A good site for an extensive tutorial on all aspects of networking
The Telephone Cable color code
A great youtube site showing how Fourier Series work.
Another youtube site showing how Fourier Series work.
An excel spreadsheet from Rfcafe.com that has a lot of great functions
A good brief on GSM
A good brief on CDMA
A Map of the internet........Sort of
AN MPEG You Tube Tutorial also look at this Wikipedia page and this tutorial
A paper that explains Broadcast TV data transmission 8VSB works
A free packet sniffer Wireshark.
MITs Open Course Ware website
An Excel spreadsheet I created for determining path loss
I also have an interest in Linux operating systems, and have set up numerous computers to use different distributions I particularly like these
Two free, low overhead, Operating Systems (Perfect for your obsolete Windows XP Computers) based on Ubuntu.
Peppermint and Mint
A Linux/Unix Command Line Cheat Sheet from Fossware
Two excellent Cybersecurity podcasts: https://thecyberwire.com/ and https://thecyberwire.com/podcasts/hacking-humans.htmlL
EET121 Pertinent data.
You will find the EET121 lectures and Multisim Examples in a sub page below. You will also find the Multisim 10 lab exercises in the sub page below
LTSPICE a free circuit analysis software program available from https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html
There are both LTSPICE and Multisim 14 examples that come directly from the textbook available. Please ask me for a copy of the files on CD or Thumb Drive.
A good site for learning electronics is https://www.electronics-tutorials.ws/
A great site full of calculators for designing BJT and JFET circuits is https://guitarscience.net/theory.htm Just pick the calculator for BJT or JFET you like.
A Good youtube video for understanding how Brushless DC motors work (BLDC) is: https://www.youtube.com/watch?v=bCEiOnuODac
A more technical explanation is here: https://www.youtube.com/watch?v=ZAY5JInyHXY
A detailed look at the BLDC motors used on the Tesla work: https://www.youtube.com/watch?v=esUb7Zy5Oio