Table 3

Average output power and percentage maximum power by study centre

Study centre900 MHz1800 MHzPMax (%)
No of callsOutput power per call (mW)No of callsOutput power per call (mW)No of callsCall time using PMax (%)Calls made entirely at PMax (%)Mean call time using PMin (%)
Mean (SD)MedianInteroperator range§Mean (SD)MedianInteroperator rangeMean (SD)Interoperator range
Australia5919143.0 (84.1)148.2299870.1 (43.5)69.1678238.0 (37.9)15.71.1
Canada¶0339555.0 (45.2)42.144.7–65.9†339530.4 (38.0)26.0–35.115.34.3
Denmark1830160.4 (82.7)172.7111.8–204.0†229764.2 (41.9)58.546.9–92.1345836.8 (39.7)27.3–45.218.30.2
Finland4208167.7 (87.0)205.4161.5–188.4130488.3 (40.6)107.478.1–93.0458160.3 (39.4)54.8–72.132.11.1
France2368152.4 (86.0)157.0121.3–157.8202282.4 (42.5)90.971.9–95.4*379652.0 (38.1)49.7–52.925.33.3
Germany2946155.5 (95.2)183.7105.6–190.9†38579.1 (36.7)78.976.4–83.0*302354.3 (42.0)33.0–69.3†38.31.5
Israel1360092.3 (82.8)65.8627647.2 (40.8)32.11505823.7 (32.6)10.04.4
Italy4744162.7 (79.7)172.5150.3–185.3*510374.7 (45.0)79.666.0–91.1†804945.7 (41.3)37.5–58.8†26.71.2
New Zealand2265171.8 (92.4)231.253067.3 (51.6)75.5246654.8 (44.1)39.91.6
Norway3350132.1 (93.5)128.0125.4–145.0102470.7 (43.9)68.664.3–99.0†394638.1 (41.8)32.2–41.4*22.61.4
Sweden4185118.2 (95.2)101.667.6–146.5†236652.1 (47.4)36.245.5–68.7546131.6 (39.6)21.6–43.9*17.28.9
UK North 1104104.0 (83.0)88.951473.0 (46.6)78.460743.7 (41.3)24.70.1
UK North 21475157.8 (92.9)187.0150.2–183.0129174.1 (45.8)79.249.7–93.3*252950.4 (43.0)33.7–54.732.90.2
Total46994133.3 (91.7)127.267.6–204.0‡2950564.2 (45.5)57.844.7–99.0‡6315139.0 (40.3)21.6–72.1‡21.02.8
  • *LR test p value for operator effect within country <0.05. †LR test p value for operator effect within country <0.001. ‡LR test p values for operator effect overall <0.001. §Interoperator range: lowest mean output power – highest mean output power in centres with more than one operator. ¶In Canada the GSM network uses a 1900 MHz frequency band with the same standards as the 1800 MHz band (table 2).

  • GSM, Global System for Mobile communications; LR, likelihood ratio; PMax, maximum power: 250 mW at 900 MHz and 125 mW at 1800 MHz; PMin, minimum power: 0.4 mW at 900 MHz and 0.13 mW at 1800 MHz.