an introduction to amateur radio. the purpose of amateur radio “to encourage self- training in...
TRANSCRIPT
An Introduction to Amateur Radio
The purpose of Amateur Radio
“To encourage self- training in radio”
Education vs Training
STELAR: Education
Foundation LicenceFoundation Licence
Technical BasicsTechnical Basics
The The BIGBIG 3 3
The Big 3The Big 3
• Current (Amps)
• Resistance and Impedance (Ohms)
• Potential Difference (Volts)
A peculiar way of thinking?
Current as electron vibration
A peculiar way of thinking?
Resistance: transfer of electron energy to atoms resulting in energy dissipation by heating.
A peculiar way of thinking?
Electrical Potential = energy possessed by electrons
Potential Difference = energy transferred from electrons to a
component
V = IR
Battery / Cell provides Potential Difference for circuit
Battery/Cell source of Direct Current (DC).
Frequency
Electrical mains 50 Hz
Hearing 100 – 15000Hz
Audio comms 300 – 3000 Hz
Frequencies you should know
300MHz- 3000MHzUHFUltra High
Frequencies
30MHz- 300MHzVHFVery High
Frequencies
3MHz- 30MHzHFHigh Frequencies
300kHz- 3MHzMFMedium Frequencies
RangeAbbreviationName
Radio Frequencies to know