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AM/FM STEREO RADIO
WITH CD/MP3/USB/SD PLAYER
CONTENTS
1. SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3~4
2. PCB DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5~8
3. PRODUCT SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9~12
4. EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5. BOM PART LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14~26
AM SPECIFICATION
MODEL : BC-4904SAC BAND : AM DATE : 2007/06/06
SUPPLY VOLTACE LOAD REF. MOD. MOD. FREQUENCY
O/P DEPTH
AC 220 V. 8 Ohm 50 mW 30% 1 KHz
DC 12 V.
DESCRIPTION TEST TEST UNIT NOR . LIMIT MEAS .
CONDITION POINT
BAND COVERAGE LOW END LOW KHz 520 +/-10
BAND COVERAGE HIGH END HIGH KHz 1630 +/-20
INTERMEDIATE FREQUENCY HIGH END HIGH KHz 455 +/-5
MAXIMUM SENSITIVITY 600 KHz LOW dB 76 82
MAXIMUM SENSITIVITY 1000 KHz MED dB 76 82
MAXIMUM SENSITIVITY 1400 KHz HIGH dB 74 82
20 dB S / N SENSITIVITY 600 KHz LOW dB 82 94
20 dB S / N SENSITIVITY 1000 KHz MED dB 82 94
20 dB S / N SENSITIVITY 1400 KHz HIGH dB 80 94
I.F. REJECTION 600 KHz LOW dB 45 35
IMAGE REJECTION 1400 KHz + 2 I.F. HIGH dB 40 30
6 dB BANDWIDTH REF. O / P + 6 dB MED KHz 5 4-9
ADJACENT CHANNEL ATTENTUATION