tag:blogger.com,1999:blog-1744037563333293322.post8181255531434410675..comments2023-10-26T11:00:05.212+02:00Comments on ZS6A - Amateur Radio Blog: WSPR - Antenna performance evaluationPierrehttp://www.blogger.com/profile/16230877697387453564noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-1744037563333293322.post-51408780031352229492015-02-11T15:43:19.490+02:002015-02-11T15:43:19.490+02:00Hi John,
I imported the data into Excel and creat...Hi John,<br /><br />I imported the data into Excel and created my own scatter graphs.<br /><br />73, Pierre ZS6A<br />Pierrehttps://www.blogger.com/profile/16230877697387453564noreply@blogger.comtag:blogger.com,1999:blog-1744037563333293322.post-72828102836729934472015-02-11T15:34:19.101+02:002015-02-11T15:34:19.101+02:00What software did you use to plot them on a time:s...What software did you use to plot them on a time:strength graph?John AE5Xhttps://www.blogger.com/profile/06884676867006975179noreply@blogger.comtag:blogger.com,1999:blog-1744037563333293322.post-66658206909588870692015-02-11T14:47:55.463+02:002015-02-11T14:47:55.463+02:00Hi Bas,
I believe Kevin also uses a rigid rotatabl...Hi Bas,<br />I believe Kevin also uses a rigid rotatable dipole for 10m at 12m agl. I will check with him, but I assume he would be pointing north to Europe.<br />There are many variables as you pointed out and one must guard against jumping to incorrect conclusions. It could be due to feed line losses, lossy balun, QRM, or receiver performance etc.<br />I still believe this method of using WSPR data provides us with a means to compare one setup with another in a real world situation.<br />In my all 40 years of amateur radio have I never seen a conscious effort to test antennas using real world data. Everything is based on math modelling and hearsay….<br /><br />73. Pierre ZS6APierrehttps://www.blogger.com/profile/16230877697387453564noreply@blogger.comtag:blogger.com,1999:blog-1744037563333293322.post-54203139741482511342015-02-11T13:47:33.344+02:002015-02-11T13:47:33.344+02:00Interesting analysis. There is a large difference ...Interesting analysis. There is a large difference in the total decodes. Could be the orientation of the antenna and surroundings or Kevin has more QRM/QRN?<br />Computer soundcard, different radios could also be the case? Could be interesting to find out why things are different. 73, BasPE4BAS, Bashttps://www.blogger.com/profile/12958141238330445285noreply@blogger.com