Yeah. "Near" in terms of metal objects near an antenna is generally regarded as 1 wavelength of distance. For 2.4GHz wireless, that would be around 124mm. 59mm for 5GHz wifi.
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On Mar 8, 2023, at 02:38, Chip Louie <chiplouie@...> wrote:
Hi Rob,
With radio waves it's not that there is metal nearby so much as that the metal is so near the antenna and parallel to the antenna that can cause a problem with the radiation and worse, the reception pattern. These stick antennas tend to radiate in the shape of a toroid. Interestingly placing a plate of metal under the antenna was an old school way to increase RF signal strength. The mini travel router sits on top of my DIY power pack which is in a plastic tool box as shown in the photo. This setup allows me very good range and even connects to my home Wi-Fi network alloing access to the ASIAIR from the PC workstation in the basement running ASIAIR under the Blue Stacks 5 emulator.
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Chip Louie Chief Daydreamer Imagination Hardware
Astropheric Weather Forecast - South Pasadena, CA
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