Practical Wireless

From Here to Eternity?


Dear Don,

Following on from Ray Howes’ G4OWY letter in October, I offer this letter in my defence regarding the ‘truth’ about cellphones mentioned in my letter to PW in May I include an excerpt from a government website below:

Is the radiation from cell phones harmful? Cell phones (2G, 3G, 4G) emit radiofrequ­ency in the frequency range of 0.7–2.7GHz. Fifthgener­ation (5G) cell phones are anticipate­d to use the frequency spectrum up to 80GHz. These frequencie­s all fall in the non-ionising range of the spectrum, which is low frequency and low energy. The energy is too low to damage DNA. By contrast, ionising radiation, which includes x-rays, radon, and cosmic rays,

is high frequency and high energy. Energy from ionising radiation can damage DNA. DNA damage can cause changes to genes that may increase the risk of cancer.

The human body does absorb energy from devices that emit radiofrequ­ency radiation. The only consistent­ly recognised biological effect of radiofrequ­ency radiation absorption in humans that the general public might encounter is heating to the area of the body where a cell phone is held (eg. the ear and head). However, that heating is not sufficient to measurably increase body temperatur­e. There are no other clearly establishe­d dangerous health effects on the human body from radiofrequ­ency radiation.

When I worked as a medical physics technician at The Christie Hospital in the 1990s I was informed by the staff there that much investigat­ion into the effects of EMF on treating cancer (ie destroying cancerous tissue) had been done before that line of research had been dropped as a dead end. Radio waves have little or no effect on living tissue.

I hope this clarifies what might have appeared as a rash statement. Perhaps I should forward this to OFCOM and the RSGB as well. Pat. Walton M1BNH Bury

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