Animals were housed in groups of six to seven in polycarbonate cages (W 40 x L 25 x H 7 cm) with no metal parts. They were RF or sham exposed in the same room as the cage controls in two identical radial waveguides. The waveguides were 4 m in diameter with a vertical plate distance of 8 cm in the region of the cages and below 6 cm toward the center to produce a well-defined field distribution. RF-absorbers were installed at the outer boundaries of the units to reduce reflections and standing waves.
Twenty-four cages per unit were placed at an equal distance from the center and covered with trapezoidal lids (three cages per opening) with wire mesh. The signal was connected to the cone antenna of one unit via a black box (blind design).
Animals were exposed 24 h per day with the exception of the time during which they were weighed and palpated and while the cages were cleaned. The waveguides were slightly overmoded with H = 0.525 λ. To prevent additional modes caused by field scattering by the mice, metal rip structures with a height and width of 2 cm were attached to the upper and lower plate between adjacent cages.
Lee HJ et al.
Lymphoma development of simultaneously combined exposure to two radiofrequency signals in AKR/J mice.
Bartsch H et al.
Effect of chronic exposure to a GSM-like signal (mobile phone) on survival of female Sprague-Dawley rats: Modulatory effects by month of birth and possibly stage of the solar cycle.
Tillmann T et al.
Indication of cocarcinogenic potential of chronic UMTS-modulated radiofrequency exposure in an ethylnitrosourea mouse model.
Sommer AM et al.
Effects of radiofrequency electromagnetic fields (UMTS) on reproduction and development of mice: a multi-generation study.
Lerchl A et al.
Effects of mobile phone electromagnetic fields at nonthermal SAR values on melatonin and body weight of Djungarian hamsters (Phodopus sungorus).
Shirai T et al.
Lack of promoting effects of chronic exposure to 1.95-GHz W-CDMA signals for IMT-2000 cellular system on development of N-ethylnitrosourea-induced central nervous system tumors in F344 rats.