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Gsm coin payphone Frequencyú¦gsm850/900/1800 /1900mhz Operating mode--gsm900 mhz tx880 ~ 915 mhz Rx925 ~ 960 mhz Gsm1800 mhz tx1710 ~ 1785 mhz Rx1805 ~ 1880 mhz Peak power--2w 900 mhz 3.6v 1w 1800 mhz 3.6v Sensitivity--
