Many thanks to SWLing Post contributor, Ivan (NO2CW), who writes:
The new RSPdx has what they call “High Dynamic Range: (HDR) mode below 2 mHz. I tested a day after receiving the new unit by turning HDR mode on and off. It seemed to make quite a difference when receiving Non Directional Beacons.
As far as Medium Wave itself, I did see some difference but it was harder to make conclusions there as propagation of weak signals on medium wave can change up and down in the course of a minute and some additional testing on Medium Wave will be done in the future. Overall for anyone interested in the world below 2 mHz HDR mode is definitely something to explore!
My video is here:
Thank you for sharing, Ivan!
Unfortunately the video is not very convincing . In two out of 6 cases shown the dx was superior to the RSP1a the model i also use . Another less important factor was the video’s low audio volume
i m just thinking for a model possibly Uno or another that can use diversity or phasing to null out unwanted local noise which is quite high at S5-7 across all the M+HF bands
Thanks Ivan for the great video!
I received my RSPdx yesterday and look forward to going after tough MW signals with it. I wonder if the HDR mode is more than just a low pass filter that kicks in via that feature in the new SDRuno version 1.33?