Roger, K8RI, commented on the tension required to install a sloper antenna so that it had little or no 'sag' as it went from top to bottom. That caused me to contemplate the 'requirement' that all el
I am sure I could model this with NEC. However, I don't think trying that is even worthwhile, because I suspect the pattern distortion from having the wire sag will be negligible compared to the patt
Actually a good example of this is the inverted vee. Where you deliberately add a lot of sag :-) This tends to lower the feed point impedance of the antenna. One thing to realize is that the resonant
I wonder if you mean that the apparent length of the wire is increasing Erich. I suspect that the actual length of wire is not really changing -- at least not significantly -- when the wire is saggi
What I suspected here was that when the wire antenna was put up, sag was minimal. Then it began to droop further as time went by. This is due to the wire lengthening under load. I experienced this a
I use Aircraft stainless steel control cable for my inverted V's / slopers. They are tight and sag is minimal since I also use them as guy wires. I install them fixed at the top of the tower and allo
If the sag is due to stretching then the resonant frequency will change due to the length change. The antenna is effectively lower with a different shape and that would change not only the capacitanc