title: [Electromagnetic fields in the vicinity of DECT cordless telephones and mobile phones].
abstract: BACKGROUND
  Mobile telephones belong to the most frequently used personal devices. In their surroundings they produce the electromagnetic field (EMF), in which exposure range there are not only users but also nearby bystanders. The aim of the investigations and EMF measurements in the vicinity of phones was to identify the electric field levels with regard to various working modes.
  
  
  METHODS
  Twelve sets of DECT (digital enhanced cordless telecommunications) cordless phones (12 base units and 15 handsets), 21 mobile telephones produced by different manufactures, and 16 smartphones in various applications, (including multimedia) in the conditions of daily use in living rooms were measured. Measurements were taken using the point method in predetermined distances of 0.05-1 m from the devices without the presence of users.
  
  
  RESULTS
  In the vicinity of DECT cordless phone handsets, electric field strength ranged from 0.26 to 2.30 V/m in the distance of 0.05 m - 0.18-0.26 V/m (1 m). In surroundings of DECT cordless telephones base units the values of EMF were from 1.78-5.44 V/m (0.05 m) to 0.19- 0.41 V/m (1 m). In the vicinity of mobile phones working in GSM mode with voice transmission, the electric field strength ranged from 2.34-9.14 V/m (0.05 m) to 0.18-0.47 V/m (1 m) while in the vicinity of mobile phones working in WCDMA (Wideband Code Division Multiple Access) mode the electric field strength ranged from 0.22-1.83 V/m (0.05 m) to 0.18-0.20 V/m (1 m).
  
  
  CONCLUSIONS
  The mean values of the electric field strength for each group of devices, mobile phones and DECT wireless phones sets do not exceed the reference value of 7 V/m, adopted as the limit for general public exposure.
authors.affiliation: Instytut Medycyny Pracy im. prof. J. Nofera / Nofer Institute of Occupational Medicine, Łódź, Poland (Zakład Ochrony Radiologicznej / Department of Radiation Protection). pawrot@tlen.pl.
authors.forename: Paweł
authors.initials: P
authors.lastname: Mamrot
authors.affiliation: Instytut Medycyny Pracy im. prof. J. Nofera / Nofer Institute of Occupational Medicine, Łódź, Poland (Zakład Ochrony Radiologicznej / Department of Radiation Protection). magmar@imp.lodz.pl.
authors.forename: Magda
authors.initials: M
authors.lastname: Mariańska
authors.affiliation: Instytut Medycyny Pracy im. prof. J. Nofera / Nofer Institute of Occupational Medicine, Łódź, Poland (Zakład Ochrony Radiologicznej / Department of Radiation Protection). h_aniol@imp.lodz.pl.
authors.forename: Halina
authors.initials: H
authors.lastname: Aniołczyk
authors.affiliation: Instytut Medycyny Pracy im. prof. J. Nofera / Nofer Institute of Occupational Medicine, Łódź, Poland (Zakład Ochrony Radiologicznej / Department of Radiation Protection). piopolit@imp.lodz.pl.
authors.forename: Piotr
authors.initials: P
authors.lastname: Politański
mesh_terms: D001822:Body Burden; D040421:Cell Phone; D004574:Electromagnetic Fields / Q000009:adverse effects*; D004781:Environmental Exposure / Q000032:analysis*; D006801:Humans; D011044:Poland; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D015203:Reproducibility of Results
keywords: bystanders exposure; cordless DECT phones; electromagnetic field; general public exposure; mobile phones; smartphones