HFU HF Underground
Loggings => 10/11 meters => Topic started by: RobRich on September 05, 2023, 2022 UTC
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Doing a quick upper HF test of the recently released RTL-SDR V4 (https://www.hfunderground.com/board/index.php/topic,117125.0.html). Using my 31' vertical antenna as usual. 3.2M/s sampling rate, so a waterfall showing ~26-29MHz.
There is some RF imaging or similar right at the 28.8MHz lowpass filter, but that is largely a "whatever" IMO.
The V4 is not really a SDR for serious weak signal HF work, but it has thus far sufficed fine for casual listening. I am not using any extra external filters at this time, either. It is certainly a better situation IMHO than dealing with a V3 for casual HF listening using an upconverter and often needing external filters.
(https://i.ibb.co/QKY5Hg1/11m-activity-09-05-2023.png)
(Click to enlarge) (https://ibb.co/gRtnW2B)
Lowered the sampling rate to ~900K/s and narrowed the RFBW for those perhaps interested.
(https://i.ibb.co/hWc9ZBQ/11m-activity-09-05-2023-2.png)
(Click to enlarge) (https://ibb.co/FwX305Z)