Foundation Radio Amateur Licence - BDARS Online Syllabus
Units of measurement and multiple/sub-multiple prefixes.
Identify the units of, and abbreviations for, Voltage (Potential Difference), Current, Power and Resistance. Note: Prefixes milli, kilo and Mega may be used.
Simple circuit theory
Recall the relationship between Voltage (Potential difference), Currentand Power. (P=V×I, I=P/V, V=P/I)
Calculate the unknown quantity given the numerical value of the other two.
Recall that resistance is the opposition to current flow.
Recall the relationship between Voltage (Potential difference), Current and Resistance. (V=I×R, I=V/R, R=V/I)
Calculate the unknown quantity given the numerical value of the other two.
Recall that a battery provides voltage (Potential Difference) at its terminals and that a circuit is needed to allow current to flow.
Recall that the polarity of a battery is not relevant if a filament bulb is used but that electronic circuits can be damaged by the wrong polarity.
Recall what is meant by the abbreviations d.c. and a.c.
Identify the circuit symbols shown in section 11
Frequencies used in power, audio and radio systems.
Recall the unit of frequency and understand the meaning of the abbreviations r.f. and a.f. Identify the graphic representation of a sine wave and recall that sine waves are produced by oscillators
Recall the frequency of the mains supply - 50Hz
Recall the range of frequencies for normal hearing – 100Hz- 15kHz
Recall the range of frequencies for audio communication - 300Hz-3kHz.
Recall the frequency bands for h.f., v.h.f. and u.h.f. radio signals.
Understand that frequency bands are allocated for particular use, e.g.broadcasting, aeronautical, maritime and amateur.
Understand the relationship between frequency and wavelength. Use a graph to convert from one to the other.