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Crystal frequency:

30 MHz Low Pass Filter

Crystal frequency:
30 MHz Low Pass Filter
50pF CRYSTAL 30.xxx MHz
Output
CAP osc osc osc osc Gain Output B Output B Bypass Vcc Vcc Vcc Out LTRA1 DIP8-PHILIPS-SA612A C18 DIP8-PHILIPS-SA612A C10 C21 47n
Output A
CAP Input A
SA612A
Input B GND
SA612A
Input A GND C13 QF 30 MHZ BW 15 KHZ Input B
LM386
+Input -Input R4 GND 10 R5 1.5k Gain C28 1
Q1 R6 50 BF245
C24 1 Input 500 Ohm Output 500 Ohm 4
C23 10n 100n 10n 2 R7 2.2k
DIP8-NSC-LM386 1n C26 100n C27 2.2n 0.47µ R8
Principle of DRM Demonstration Receiver
DRM Demonstration Shortwave Receiver PASD Panasonic Automotive Systems Christoph Petermann DF9CY July 2003
A Antenna
30 MHz Lowpass
UpMixer
30 MHz Quarzfilter
DownMixer
AF Amplifier
AF Out
1st Oscillator 0 . 30 MHz
30 MHz Oscillator
Title
Range 30 kHz . 30 MHz External oscillator required Upmixing to 1st IF 30 MHz with 15 kHz bandwidth Downmixing to 12 kHz out center frequency
DRM Demonstration Shortwave Receiver
Number Revision
Size B Date: File:
22-Jul-2003 Sheet of