Of course.
On 4/29/2020 6:21 AM, jimlux wrote:
On 4/28/20 9:35 PM, Wes wrote:
I agree with Dave. We had a similar discussion about this (using monopoles)
nearly 20 years ago in the rec.radio.amateur.antenna forum. I wrote a little
paper at the time; I see it's available at:
https://www.qsl.net/n7ws/Loaded_Antennas.pdf ; Of note is my reference #1.
Wes N7WS
I think, though, that the whole "short vertical" thing (typically in the
context of vehicle mounted antennas) is a much more extreme case than a loaded
40m, where the elements are nearly full sized (46 ft vs 66 ft).
The radiation resistance of a 8 foot monopole for 7 MHz is a lot smaller than
the loaded 40m yagi element.
Loss resistance is going to be a much bigger factor for something with a 2 ohm
radiation resistance than for something with a 20 or 50 ohm Rrad.
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