Sunday, April 26, 2020
Reception of the OZ7IGY beacon on 40 MHz - Sat 25th April 2020
There was a pretty intensive opening on 28 MHz on Saturday 25th of April 2020 with the MUF going up as high as 50 MHz.
After hearing the OZ7IGY beacon on 28.271 MHz, I had a listen for the beacon on 40.071 MHz and it eventually came out of the noise.
These were the decodes with the PI4 programme...
40M 13:30 UTC OZ7IGY PI4: S/N=-22 dB Q=64 T=-0.06 s F=3 Hz Carrier: F= Hz C/N= dB
40M 13:31 UTC OZ7IGY PI4: S/N=-1 dB Q=100 T=-0.06 s F=3 Hz Carrier: F= Hz C/N= dB
40M 13:32 UTC OZ7IGY PI4: S/N=-12 dB Q=98 T=-0.06 s F=3 Hz Carrier: F= Hz C/N= dB
40M 13:34 UTC OZ7IGY PI4: S/N=-21 dB Q=38 T=-0.08 s F=3 Hz Carrier: F= Hz C/N= dB
40M 13:38 UTC OZ7IGY PI4: S/N=-11 dB Q=100 T=-0.08 s F=3 Hz Carrier: F= Hz C/N= dB
40M 13:39 UTC OZ7IGY PI4: S/N=-15 dB Q=78 T=-0.08 s F=3 Hz Carrier: F= Hz C/N= dB
40M 13:40 UTC OZ7IGY PI4: S/N=0 dB Q=100 T=-0.06 s F=3 Hz Carrier: F= Hz C/N= dB
40M 13:41 UTC OZ7IGY PI4: S/N=6 dB Q=100 T=-0.06 s F=9 Hz Carrier: F= Hz C/N= dB
40M 14:16 UTC OZ7IGY PI4: S/N=-16 dB Q=82 T=-0.16 s F=3 Hz Carrier: F= Hz C/N= dB
40M 14:17 UTC OZ7IGY PI4: S/N=-20 dB Q=62 T=-0.15 s F=9 Hz Carrier: F= Hz C/N= dB
The strongest signal had a signal to noise (S/N) ratio of +6dB, the weakest -22dB.
Updated version of PI4 reception software... After a successful decode of the PI4 signal, there is the option to right click on it and spot it on the DX Cluster.
OZ7IGY Beacon website... These spots also appear on the OZ7IGY website. When I tried this a few days ago with an older version of PI4 (Ver 0.9.7.0), the spots didn't on the site. With the newer version (Ver 0.9.8.0), they do.
This is screen shot of the site showing the 28 MHz and 40 MHz spots from the 25th...
It worth noting that the various DX Clusters seem to handle the PI4 and 40 MHz spots differently.
DXWATCH DX Cluster... On the DXWATCH site, the PI4 spots sent from within the programme don't appear. The site also seems to filter out 40 MHz as it assumes it's a mistake as it isn't one of the usual bands. The spot above for 28 MHz from me was sent via the DXMaps website.
DXSUMMIT DX Cluster... On the DXSummit site, the PI4 spots appear successfully.
These are the spots on the DXSUMMIT site for OZ7IGY on the 25th of April 2020...
The spots from me shown as just 'EI7GL' are from DXMaps where I am a registered user.
The spots with 'EI7GL-@' were sent from within the PI4 programme.
Also note that EI3GYB also heard the beacon an hour later later at a location further north.
More information about the OZ7IGY beacon and the PI4 can be found here... http://www.oz7igy.dk/