Monday, April 27, 2020

GSM AMPLIFIER GSM 850MHz Repeater CHIPS

l -6 4v   l-5  4.2 v  l-7 3.2  l-8 2,3   l-9 2.1 v   l-10  4.58v   c9 0.2 mv    r 20   5v   R 18 2.98V


s-m 4677b3 b2
LM358 IS USED  OPERATION AMPLIFIER   TO THE  SIGNAL LEVEL  IN   THE   INPUT  ANTENNA  FOR  DUAL GSM  OPERATION  COMPANY


WITH SIGNAL  ON  PROB
OUT PUT 7 80 MV  - 30 MV
INPUT 6  0-1.3V
INPUT5  0--1.3V

FILTER  COILS

S- M 4677B3-B2

NDF9269   USED  IN  B5   AND  B6

EPCOS4677
 HDF6956  B 5   B 6

EPCOS 7604

RF FILTER   SCHEME


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