NOISE ADVANTAGE OF LONG WIRE ANTENNA FAR END TERMINATION

[glovisol]

NEW Vs. ORIGINAL ANTENNA TERMINATION - COMPARATIVE RESULTS, 3.6 MHz

Guys, I apologise for always posting diagrams, diagrams....but cannot be helped. If one converts the raw measurement data shown in these diagrams and compares with his own data, he can very well understand what is the noise class of the site he is in and maybe how noisy his antenna is.

[sdrom33]

What you mean by "convert".?

[glovisol]

NEW Vs. ORIGINAL ANTENNA TERMINATION - COMPARATIVE RESULTS, 7.2 MHz

Hi sdrom33, "convert" means converting the raw measured noise data on the power meter of the RSP receiver into the standard ITU value, to classify the noise level in one of the ITU categories, as explained in my thread "assessing the performance of the RSP receiver system in HF":

https://www.sdrplay.com/community/viewt ... f=5&t=3685

But even if you are lazy, the comparative data presented in the graphs shows the advantage obtained by modifying the antenna terminations. Even if in some points past levels seem better on a spot, the improvement on average noise level is quite noticeable. Please understand, as already explained, that the noise advantage becomes bigger when man made noise is effectively present and man made noise level tends to decrease with increasing frequency, so the best advantage was obtained in the lower HF. In the graph below, ignoring the big variations of October 2018, the advantage obtained in June 2019 over November 218 on 40 m is immediately apparent .

[glovisol]

NEW Vs. ORIGINAL ANTENNA TERMINATION - COMPARATIVE RESULTS,14.2 MHz