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NShepherdParticipantHello, I have been comparing the weak signal sensitivity of my SA44B using Spike and HDSDR. In Spike the gain control can be manually set to maximum with 0 dB front end attenuation and the pre-amp engaged. Weak signal sensitivity is excellent. In HDSDR it seems there is no control allowing the pre-amp to be selected. Otherwise the RF gain control seems to function as it should. However to get equivalent sensitivity in HDSDR I have to use an external pre-amp. Not sure if this is me doing something wrong in HDSDR or if it’s a safety feature to prevent accidents for HDSDR users. Nick VE3OWV
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