Filter
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Date: 19-11-02 Page 4 of 8
wide band filter
narrow band filter
ZF in GND
The IF section has two IF filters, a narrow band filter and a wide band filter. One of these
filters has to be replaced by a wider filter with appr. 10 kHz bandwidth. The filter ‘W’ is
active if the receiver is in ‘wide’ mode, the filter ‘N’ is active if the receiver is in ‘narrow’
mode.