How does the RX attenuator work?
Posted: Tue Jan 18, 2022 8:29 pm
Dear friends,
I am having trouble understanding how the drop-down RX attenuator works. I would expect that adding attenuation would lower RX levels; this is how an external (physical) attenuator works. You add a 10 dB attenuator to the RX input and all received signals are reduced by 10 dB. In Thetis, it seems to do the opposite. Adding 10 dB from the drop-down box raises everything by abut 10 dB. Could someone explain?
Thanks,
W9IP
I am having trouble understanding how the drop-down RX attenuator works. I would expect that adding attenuation would lower RX levels; this is how an external (physical) attenuator works. You add a 10 dB attenuator to the RX input and all received signals are reduced by 10 dB. In Thetis, it seems to do the opposite. Adding 10 dB from the drop-down box raises everything by abut 10 dB. Could someone explain?
Thanks,
W9IP