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Date: 19-11-02 Page 6 of 8
3.3 IF Filter types
The following Murata filter types are fitting into the IF filter footprint in the SW77 receiver:
Part Number 6 dB bandwidth
CFWM455G +/- 4.5 kHz
CFWM455F +/- 6.0 kHz
CFWM455E +/- 7.5 kHz
4 Connection of DRM Miniature Mixer Unit
The IF frequency is 455 kHz in the SW77 receiver. Therefore the mixer unit with a 467,0 kHz
oscillator is needed. It is recommended to use the mixer unit with the crystal oscillator.