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  • TETRA stands for Terrestrial Trunked Radio.
  • It has been adopted in many countries since about 2000 to provide communications for the emergency services.
  • Its technical specifications vary from country to country, and accordingly its health effects also vary.
  • It was allegedly not fully safety tested before being brought into use.

Ill health from TETRA
TETRA can produce the specific ill health symptoms caused by similar radiation.

These include:

  • cancers,
  • cardiovascular effects (e.g. irregular heartbeat, shortness of breath, stroke),
  • hypersensitivity to electromagnetic energy,
  • neurological effects (e.g. sleep disorders, dizziness, nausea, headaches, migraine),
  • reduced fertility,
  • skin effects (rashes, itch).

Similar 2G and 3G radio frequency (RF) radiation shows ‘clear evidence’ of causing cancer (NPT, 2018)

Reasons why TETRA is especially dangerous

Radio frequency polarised radiation has much greater biological effect than natural non-polarised radiation.

Low carrier frequency
TETRA uses radio frequency microwave radiation, from about 380 MHz to 921 MHz, most often 380-400 or 460 MHz.
This radiation penetrates more deeply into the body than some higher frequencies.

Pulsed radiation at 17 Hz frequency
TETRA’s 17.65 frames per second create a pulsed amplitude modulation at 17.65 Hz. This is close to the 16 Hz resonance frequency of calcium ions, causing calcium flux through the cell membrane, an established cause of ill health from radio frequency radiation (Pall ML, 2013).

TETRA towers
Ordinary citizens can experience the established specific symptoms of intolerance to RF radiation when crossing a TETRA ‘line’ between two TETRA masts.

The TETRA masts send out pulsed radiation at full power all the time, 24/7, unlike cellphone towers.

A TETRA ‘line’ can cause road accidents or sickness in a particular apartment or work space, as can living close to a TETRA mast.

Actions needed:

TETRA should be regulated under long-term biological limits, not short-term heating limits
TETRA should come under biological guidelines, such as EUROPAEM EMF Guidelines 2016.
The ICNIRP 1998 guidelines and FCC standards prevent only short-term heating, averaged over 6 or 30 minutes, based on Schwan’s mistake of 1953, and so are not relevant to people having to work using TETRA or live near it.

The ICNIRP in 2002 stated that some people need long-term biological guidelines.

Devices should not be worn on the body
Radiation devices positioned close to the body have a greater effect than those held at a distance.
Since health effects from RF radiation are known to be cumulative, wearing devices is not advised.