Timeline for Is there a suitable alternative to using a metal pole to mount a vertical yagi apart from wood and fiber glass?
Current License: CC BY-SA 4.0
6 events
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| Oct 16, 2019 at 9:08 | comment | added | tomnexus | Yes, if you keep it to less than a quarter wave. But that won't support the antenna, as each element hangs out by a quarter wave. So you will need multiple insulated segments. Connecting fibreglass to metal is quite difficult, bulky and takes up a lot of length, so I still think its easier to make the whole top 3/4 wavelength of the pole out of fibreglass. | |
| Oct 16, 2019 at 8:03 | comment | added | Andrew | so you are saying that i could use a metal pole for a vertical yagi provided that it isn't too long and not connected to the boom ? What is the maximum length it could be without affecting the antenna too much ? | |
| Oct 15, 2019 at 14:43 | comment | added | tomnexus | Short pieces of metal have very little effect on the antenna. If the section connected to the boom is << 0.25 $\lambda$ or an unconnected section is << 0.5 $\lambda$, it won't couple much to the antenna. | |
| Oct 15, 2019 at 4:33 | comment | added | Andrew | But won't the broken up metal pole segments still get in the way if they are in between the elements ? even if they re less RF "visible" at the frequency being used ... | |
| Oct 15, 2019 at 4:31 | vote | accept | Andrew | ||
| Oct 11, 2019 at 5:50 | history | answered | tomnexus | CC BY-SA 4.0 |