Use this tag for questions related to vertical antennas, the construction, characteristics and performance.
Use this tag for questions related to vertical antennas, the construction, characteristics and performance.
Questions tagged [vertical-antenna]
122 questions
4
votes
1 answer
How Does Earth Conductivity Affect the "Takeoff Angle" of a Vertical Monopole?
NEC4.2 gives some insight into this ...
Richard Fry
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4
votes
1 answer
What is the radiation pattern and feedpoint resistance of a raised feed point vertical?
If you put a vertical 1/4 wavelength antenna on a pole of about 15 feet and tie the base of the pole to a massive grid of radials and the ground itself how does it affect the radiation pattern and the feed point resistance? It is like an infinitely…
david
- 141
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3
votes
1 answer
What are the pros and cons of mounting an HF vertical on raised bank?
My garden has, at one end, a wall of large (chest freezer size) randomly placed granite boulders loosely filled with earth and stones.
Currently my vertical is in the garden about 10m east of the bank.
I could mount it up on the bank, putting it 2…
quanglewangle
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3
votes
2 answers
Vertical antenna with feedpoint below ground plane?
What happens when a groundplane antenna's vertical element, bottom feedpoint, and/or bottom loading coil move down and encroach into the area below the plane formed by its own perpendicular elevated radials?
I have never seen a book or article about…
Bitbang3r
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2
votes
1 answer
Will a multi band vertical 'choose' correct radial?
For elevated radials.
If I put up a 40m/80m fan vertical can I do the same for radials, that is cut some for quarter wave on each band?
Radials will be about 2m off ground.
quanglewangle
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2
votes
1 answer
What Are the Properties of 43' Vertical Monopoles Used as Multiband Radiators?
43' vertical monopoles sometimes are used with an auto-tuner at their input as radiators in the ham bands from 40m through 10m, but are any performance compromises required to do that?
Richard Fry
- 2,922
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- 18
2
votes
0 answers
Vertical antenna near power and cable lines
I have a 40M vertical on top of my roof. When I transmit at 100W, my internet drops. My neighbor's internet too (different cable company). At 50W it seems to be OK.
As an expermient, I used a smaller vertical (Hustler 40M mobile), clamped to a…
hjf
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votes
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Vertical Antennas: Compare Cushcraft R9, no radials to 43 foot vertical with ground radials
Small lot, must go vertical.
Which antenna will preform better, with less noise, good DX.
Cushcraft R9, NO ground radials. Or, 43' with ground radials.
Kevin
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