Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
f requency(MHz) = 300 / wavelength(meters)
...
Measure the length of the whip antenna in meters and multiply by four. Then use the formula
as a first approximation assuming that the whip antenna is designed to be a 1/4 wave vertical antenna.Code:f requency(MHz) = 300 / wavelength(meters)
True, but the OP did not mention those things. We can assume anything we want, but that doesn't mean it has any relevance whatsoever. He said wip[sic.] antennas with no mention of loading colis or helical wound wires -- sheeshThis won't work if there is an obvious helical-wound wire under heatshrink on a fiberglas whip. Most CB and some 4-30Mhz Ham antennas are made that way. They are much shorter than a quarter wavelength.
True, but the OP did not mention those things. We can assume anything we want, but that doesn't mean it has any relevance whatsoever. He said wip[sic.] antennas with no mention of loading colis or helical wound wires -- sheesh
The only other thing he mentioned was bench testing and I think he got that answer.
Except what you posted was a qualitative description of things that might be. No mention was made of how to analyze them if they were there. I'll let the other 50 readers weigh in on the usefulness of your post.Sheesh yourself! The OP is not the only person who reads these posts. Did you ever think that perhaps what I posted might be useful to the 50 or so other readers of this thread!
Except what you posted was a qualitative description of things that might be. No mention was made of how to analyze them if they were there. I'll let the other 50 readers weigh in on the usefulness of your post.
I have photo's of the three aerial's The longest aerial is 2.360 ,
the middle one is 1.750 and the solid wire is 1.310 Meters long an I have photo's of the base area of the aerial's. I have placed a sketch of the long aerial to show what is at the base
I hope this helps.