UNDERSTANDING RF

UNDERSTANDING RF


Radio frequency (RF) – Radio Frequency is the area (or band) of the electromagnetic spectrum where most radio communication takes place.



The signal can be thought of as a wave that spreads out from its source (the antenna). It is often referred to as an electromagnetic wave that is made up of linked electric and magnetic components. The radiofrequency (RF) part of the electromagnetic spectrum includes electromagnatic waves produced by television and radio transmitters (including base stations) and microwaves. The electric and magnetic components that form the electromagnetic wave can be referred to as radiofrequency fields.

From "Radiation, Mobile Phones, Base Stations and Your Health" by Prof Ng Kwan-Hoong, Universiy of Malaya.

Radio Frequency and Health Talk by Prof Ng Kwan Hoong.


It is established that RF do not have sufficient energy to damage cell structures.

Thus, the RF energy is considered as "non-ionizing". Non-ionizing radiation (NIR) is a general term for certain parts of the electromagnetic spectrum with energies that are too weak to break atomic bonds. They include extremely low frequency (ELF) fields, radiofrequency and microwave (RF/MW) fields, infrared radiation, visible light and ultraviolet (UV) radiation.

As non-ionizing radiation cannot break chemical bonds, there is no similarity between the biological effects of non-ionizing radiation and ionizing radiation (such as x-rays).

At the extremely high frequencies of electromagnetic spectrum (such as xrays
and gamma rays), electromagnetic particles (photons) have sufficient energy to cause ionization (create positive and negative electrically charged atoms or parts of molecules) by breaking the atomic bonds that hold molecules in cells together. This is how x-rays damage the genetic material of cells, potentially leading to cancer or birth defects.

Even at high intensity, NIR cannot cause ionization in a biological system.

Compiled from: Ministry of Health Malaysia - Guidance To Safety and Health Aspects Of Base Stations and Mobile Phones.



TERMINOLOGIES

EMF – Electromagnetic Field are invisible lines of force surrounding any electrical wire or device. They consist of two components — the electric field, which is the result of voltage, and the magnetic field, which is the result of current flow.

EM - The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation frequencies.The "electromagnetic spectrum" (usually just spectrum) of an object is the characteristic distribution of electromagnetic radiation from that particular object.

Electromagnetic radiation - takes the form of self-propagatingwaves in a vacuum or in matter. EM radiation has an electric and magnetic field component which oscillate in phase perpendicular to each other and to the direction of energy propagation. Electromagnetic radiation is classified into types according to the frequency of the wave, these types include (in order of increasing frequency): radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.

Radio waves - are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum. A common use is to transport information through the atmosphere or outer space without wires.

Non-ionizing radiation (NIR) - refers to any type of electromagnetic radiation that does not carry enough energy per quantum to ionize atoms or molecules — that is, to completely remove an electron from an atom or molecule. Near ultraviolet, visible light, infrared, microwave, radio waves, low frequency RF and static fields are all examples of non-ionizing radiation.

Ionizing Radiation - Radiation that carries more than 1216 kJ/mol of energy. Enough energy per quantum to ionize atoms or molecules e.g.UVB rays (higher end of the UV spectrum), x-rays, gamma rays, cosmic rays.


THE ELECTROMAGNETIC SPECTRUM

proposed Celcom 3G tower at TKP

Rujukan: 2/ctwr/6/10 Tarikh:8hb Jun 2010

Salam Sejahtera,
Kepada Semua Penduduk Taman Kumbar Permai,

CADANGAN PENYEWAAN TAPAK UNTUK PENEMPATAN MENARA TELEKOMUNIKASI CELCOM 3G DI TAMAN KUMBAR PERMAI.

Adalah dimaklumkan Celcom bercadang untuk menempatkan Menara Telekomunikasi 3G di atas bangunan Blok 4 (roof top). Perbincangan awal, lawatan tapak dan kajian kesesuaian telah dijalankan dan mendapati amat sesuai untuk dibina menara tersebut.

Dari sewaan tapak itu nanti, pihak persatuan dijangka dapat menjana pendapatan RM14 ribu ke RM15 ribu setahun. Hasil dari pendapatan ini akan di gunakan untuk kebajikan penduduk Taman Kumbar Permai melalui aktiviti aktiviti Persatuan Penduduk.
Untuk makluman, kenyataan media (press release) dari Suruhanjaya Komunikasi dan Multimedia Malaysia – SKMM menyatakan hasil kajian yang dijalankan oleh organisasi dan pakar pakar dari dalam dan luar negara telah menunjukan bahawa RF emission dari menara menara telekomunikasi ini adalah tidak membahayakan manusia. Kebimbangan ini terjadi apabila maklumat sebenar tidak didedahkan kepada mesyarakat dengan secukupnya. Sila layari www.rfrad.gov.my atau www.skmm.gov.my untuk membantu anda mendapat maklumat lanjut.

Pihak persatuan memohon kerjasama penduduk untuk memberi maklum balas dengan mengisi keratan dibawah dan diserahkan ke peti surat khas di pondok pengawal dalam tempoh 14 hari dari tarikh surat ini. Kami akan membuat keputusan yang terbaik secara kolektif yang akan menguntungkan semua pihak dan semestinya akan melihat dari pelbagai sudut dan pandangan. Kerjasama anda terlebih dahulu di ucapkan jutaan terima kasih.



Sekian terima kasih,




KAMARUZAMAN BIN SURADI
Pengerusi PPTKP