Telescopic Scanner

Optimum length for my scanner antenna ?

I have bought a telescopic antenna for my scanner. I am interested in listening to the VHF frequency 130 MHZ. I can extend my antenna upto nearly two meters, but for this frequency,what will be the optimum length of extension ?

Optimum is a quarter wavelength for a whip aerial.

Wavelength (metres) = 3 x 10^8 divided by Freq (Hz)

i.e. 3 x 10^8 div by 130 x 10^6 = 2.3 metres

A quarter wavelength for 130MHz is thus 0.577 metres.

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About the Author:

© 2006 Maureen P Cook
In this article, Maureen Cook shows you how vision
aids can make life with low vision very good.
To read more, go to
Low Vision Aids

Article Source: ArticlesBase.com – Optical Aids to Help You Cope with Low Vision