Cheatography

# Ham Radio Technician's Exam Cheat Sheet Cheat Sheet (DRAFT) by avryhof

This Cheat sheet is designed to be something you can use to study for the HAM Radio Technician's exam. It is based on the technique at http://arfunk.com/fun/amateur-ham-radio/guide-to-passing-amateur.html which instructs you to make a cheat sheet, and transcribe it to another piece of paper just before taking your exam so the material is fresh in your head. DO NOT TRY TO TAKE THIS INTO THE EXAM!

This is a draft cheat sheet. It is a work in progress and is not finished yet.

### Variables

 E Voltage in Volts I Current in Amperes (A) R Resistance in Ohms (Ω) P Power in Watts (W)

### Formulas

 300 = Frequency (MHz) x Wavelength (Meters) E ``I x R`` (Ohm's Law) P ``E x I``

### Prefixes

 giga G 1,000,­000,000 GHz mega M 1,000,000 MHz kilo k 1,000 KHz 1 Hz milli m 0.001 thousandth micro μ 0.000 001 millionth nano n 0.000 000 001 billionth pico p 0.000 000 000 001
Sometimes these are written as exponents in scientific notation.
For values > 1: 10^(number of places)
- ex:
``Kilo: 10^3 = 1,000``

For Values < 1: 10^(-n­umber of places­)[n­ega­tive]
- ex:
``milli: 10^-3 = 0.001``