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amateur radio antenna balun basikal dan radio amatur half-wave hamradio homebrew physic science wavelength

Antena Dipole Separuh Gelombang

9M2PJU November 21, 2011

Seperti yang kita sudah sedia maklum, dipole antenna adalah antenna ringkas yang boleh dibuat dari…

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acoustic decibel hearing physic
9M2PJU 0 Comments

What Is Decibel ?

The decibel (abbreviated dB) is the unit used to measure the intensity of a sound.…

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October 8, 2011
amateur radio band ducting frequency physic propagation radio amatur refract scatter science signal tropospheric UHF VHF
9M2PJU 0 Comments

The Basics of VHF and UHF Signal Propagation

The Electromagnetic Spectrum - The electromagnetic spectrum is a continuum of all electromagnetic waves arranged…

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September 19, 2011
amateur radio frequency knowledge physic radio amatur science wavelength
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Wavelength

The distance between crests of a wave. The wavelength determines the nature of the various…

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September 19, 2011

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