In previous posts (Ref.1/Ref.2) I looked at using WWV and the NCDXF beacons as a quick guide to assessing the existing propagation conditions. Yesterday it suddenly warmed up, so I had to get out on my newly rebuilt balcony and do a quick HF propagation test. I scanned for WWV and the NCDXF beacons using SDR# and the RTL-SDR with 125MHz upconverter.
HF Reception Results
|Station||Frequency||Relative Rx Power|
|WWV||2.5MHz||-85dBFS noise level|
|WWV||5.0MHz||-85dBFS noise level|
Figure 1 shows a table of reception results. WWV came through very well on 15MHz and 20MHz, weakly on 10MHz and not at all on 2.5 & 5MHz. The only NCDXF beacon I was able to receive was NewYork 4U1UN at 14.1MHz which came in very well. Figures 2/3/4 show the received spectrum and Figures 5/6 the VOACAP propagation wheel for my location to WWV and NewYork.
Please send your comments, questions and suggestions to:
#1. – “RTL-SDR for HF WWV Propagation”
#2. – “RTL-SDR for HF Beacons Propagation Predictions”
#3. – “Major Solar Cycle 25 Geomagnetic Storm”, June 2023 ARRL QST Magazine
#4. – “Experience the Wonders of Solar Cycle 25’s Solar Maximum”, May 2023 ARRL QST Magazine