Panasonic EB-G60 Service Manual

Also see for EBG60 - CELL PHONE: Operating instructions Operating instructions

– 5–1 –5.1. RF Overview5.1.1. Introduction5. TECHNICAL DESCRIPTION■ General SpecificationsThe telephone is a Dual Band product incorporating two switch able transceivers, one for the E-GSM 900 bandand another for the GSM 1800 (DCS 1800) band. The transmit and receive bands for the mobile are given inthe table below:Other salient technical features are as follows:■ Main PCB DescriptionAll components required for the RF and Logic circuits, excluding the LCD module, are contained on a singleprinted circuit board (PCB). The PCB has six layers with lay1-2 and layer 5-6 build-up Surface and back layertracks are gold-plated to prevent oxidization and enable better soldering. The PCB mother broad thickness is 1mm ± 0.1 mm; MMI is 0.4 min ± 0.05 mm. All RF components are located on one side of the bottom half area ofthe PCB, with the baseband components (Logic circuits) occupying the lower half of the PCB. A metallised shieldshields the RF circuit area. The top half of the back case has been designed to provide a shielded enclosure toreduce further spurious emissions and logic noise.Tx RxE-GSM 900 880 - 915 MHz 925 - 960 MHzGSM 1800 1710 - 1785 MHz 1805 - 1880 MHzGSM 850 824 - 849 MHz 869 - 894 MHzGSM 1900 1850 - 1910 MHz 1930 - 1990 MHzE-GSM 900 GSM 1800 GSM 850 GSM 1900Rx Bandwidth 35 MHz 75 MHz 25 MHz 60 MHzTx Bandwidth 35 MHz 75 MHz 25 MHz 60 MHzDuplex Spacing 45 MHz 95 MHz 45 MHz 80 MHzNumber of Channels 174 374 124 299AFRCN(Channel Numbers) 0 - 124975 - 1023512 - 885 128 - 251 512 - 8101st Tx Channel 880.2 MHz(Ch975)1710.2 MHz(Ch512)824.2 MHz(Ch128)1850.2 MHz(Ch512)Last Tx Channel 914.8MHz(Ch124)1784.8 MHz(Ch885)848.8 MHz(Ch251)1909.8 MHz(Ch810)1st Rx Channel 925.2 MHz(Ch 975)1805.2 MHz(Ch512)869.2 MHz(Ch128)1930.2 MHz(Ch512)Last Rx Channel 959.8 MHz(Ch124)1879.8 MHz(Ch885)893.8 MHz(Ch251)1989.8 MHz(Ch810)Maximum Tx power 33.0dBm{Class 4}(PL5)30dBm{Class 1}(PL0)33.0dBm{Class 4}(PL5)30dBm{Class 1}(PL0)Minimum Tx power 5.0dBm(PL19)0.0dBm(PL15)5.0dBm(PL19)0.0dBm(PL15)