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--- projects:storm:antenna [2015/03/10 22:41] – storm
+++ projects:storm:antenna [2015/03/17 20:52] (current) – storm
@@ Line 1: / Line 1: @@
 ====== Antenna tuning ======
+Since I created this article rtl-sdr.com published a similar tutorial (http://www.rtl-sdr.com/rtl-sdr-tutorial-measuring-filter-characteristics-and-antenna-vswr-with-an-rtl-sdr-and-noise-source/) and mentioned rather cheap directional couplers, which I might acquire in the future.
 ===== Motivation =====
@@ Line 34: / Line 36: @@
 {{ :projects:storm:payload_step10_350-500.png?direct&600 |}}
-Interestingly the bandwith goes up with the central frequency, while the maximum radiated signal strength slightly drops.
+Interestingly the bandwith goes up with the central frequency, while the maximum radiated signal strength slightly drops. To further investigate, I will have to do a proper compensation for the frequency dependence of the noise generator.
 It should also be noted, that I see a slight dependence on the orientation of the antenna. I suspect this is due to reflections of metallic surfaces in my rather cramped room. I will test outside and report back.