Bredhurst Receiving and Transmitting Society

Advanced Radio Amateur Examination

Prefixes

You first saw a very similar table to this in the ILC but now there is added an extra column in the scaling which shows you the exponential value.

Prefix	Prefix Name	Scaling			Example
p	pico	1/1,000,000,000,000	0.000000000001	1.0 x 10-12	1pF	1 pico farad
n	nano	1/1,000,000,000	0.000000001	1.0 x 10-9	1nF	1 nano farad
u	micro	1/1,000,000	0.000001	1.0 x 10-6	0.1uF	1 micro farad
m	milli	1/1,000	0.001	1.0 x 10-3	1mA	1 milli amp
		1		1.0 x 100
k	kilo	1000		1.0 x 103	1k	1 kilo ohms
M	Mega	1,000,000		1.0 x 106	1M	1 mega ohms
G	Giga	1,000,000,000		1.0 x 109	1GHz	1 giga hertz

You need to be able to convert between one prefix and another. NOTE: that the interval between the changes is 1,000 10³ or 10^-3 whichever way you are going !!!

This was also introduced to you in the ILC

Goal Makers Kick Once Many Underestimate Noise Pollution

Goal = Giga

Makers = Mega

Kick = kilo

Once = 1

Many = milli

Underestimate = u for micro

Noise = nano

Pollution = pico

End of maths for the exam..

Well that really is the end of the basics to the maths in the course. If you still find things difficult then ask your tutor to help you or email the course tutor of this web site and additional information could be placed here to help you and other students.

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