Can anyone suggest a good way to estimate the incoming RF arrival angle for a given QSO? Are there any software tools to help in that type of analysis? 73, Rick ZL2HAM _______________________________
You would need at least two separate antennas and the ability to measure the phase angle between the signals received by the two antennas. When I was in grad school in college in radio science, we us
Luckily the world is not that simple we really could measure the arrival angle. There are often more than one sky wave propagation models happening all the time if you are in ZL2. the propagation usu
VOACAP does indeed predict optimum arrival angle for any particular path, but that's based upon statistical averages -->by month<-- and has no bearing at all to instantaneous conditions ... which can
using stacked antennas to eliminate notches or somehow being able to quickly raise/lower your antenna as conditions require. Or perhaps using an antenna with tunable element lengths (SteppIR/UltraBe
I think the link below is the right Webinar. I hope so, But I remember one had some very good information on this very subject. http://www.pvrc.org/webinar/n6bv.wmv Joe WB9SBD Sig The Original Rollin
I'm afraid I don't understand. The vertical pattern of a horizontally polarized antenna has very little dependency upon element length, and certainly not within element lengths that would provide any
Dave has a real point here. Plus, I add anyway on HF, for horizontal antennas the vertical pattern is rather wide. And, the need to adjust the height of the antenna is several meters in order to get
I agree, Changing the length should have little to no change of the main lobe angle above the horizon. But what did make a HUGE change, was what I had in the 80's I had small Mosley TA-33 Vintage 70'
Arriving signal polarity is indeed something that others have found to be quite variable at times. It is generally accepted that HF skywave signals arrive with an elliptical polarization, but the sha
It varies million of times a second. :-) A horizontally polarized dipole, or Yagi, is only perfectly horizontal straight off the broadside of the element. I made that mistake installing a 160 dipole