More than a month ago my QDX lost sensitivity. The FTS3253, which switches the input bandpass filter, is broken. I ordered FTS3253 and am waiting for the parcel. To stay on the air, I fed the input signal to the mixer transformer, bypassing the filter. Over the course of a month of active work, I did not notice any deterioration in reception.
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73, Oleh, UY2ZA
