Agreed. That appears to be part of the approach in the commercial version, which looks to extend about 18” down.
Mark Sent from my iPhone > On Mar 10, 2021, at 10:52 AM, Nizar Mullani <mull...@tlite.com> wrote: > > > The easiest, and cheapest solution is to hang a self contained FSM a few feet > down the Drone.to get away from the PWM noise. Otherwise, you will have to > filter the noise in the FSM. > >> On Wed, Mar 10, 2021 at 10:06 AM Mark Brantana <n5...@yahoo.com> wrote: >> Ok. So researching the available drones and addressing noise is job one. No >> doubt the smaller the drone, the noisier. Likewise, the cheaper ones will >> probably have more noise. I was hoping since everything is DC, noise might >> not be an issue. But clearly it is a key consideration. Thanks Nizar. Are >> there fixes? >> >> Sent from my iPhone >> >>>> On Mar 10, 2021, at 9:53 AM, Gary Sitton <gasit...@comcast.net> wrote: >>>> >>> >>> Nizar is right, those drone motors are 3 phase permanent magnet, brushless >>> DC motors with PWM controllers which are very noisy. This would require >>> sophisticated noise canceling software as well as hardware mitigation. >>> Gary >>> >>> >>>> On March 10, 2021 9:21:33 AM Nizar Mullani <mull...@tlite.com> wrote: >>>> >>>> Make sure the Drone electronics is quiet enough to not interfere with the >>>> Field Strength Measurements. >>>> Nizar K0NM >>>> >>>>>> On Mar 10, 2021, at 9:13 AM, Mark Brantana via BVARC <bvarc@bvarc.org> >>>>>> wrote: >>>>>> >>>>> Considering you can buy a small drone with a camera for less than $100, >>>>> an amateur FSD could cost less than $200. >>>>> https://bunnytags.com/products/mini-hd-camera-drone-pocket-quadcopter-remote-controlled-for-kids?utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping¤cy=USD&gclid=EAIaIQobChMIoamGyYCm7wIVUb7ACh1nAA5OEAQYCyABEgIkAvD_BwE >>>>> >>>>> Sent from my iPhone >>>>> >>>>>>> On Mar 10, 2021, at 9:05 AM, Gary Sitton via BVARC <bvarc@bvarc.org> >>>>>>> wrote: >>>>>>> >>>>>> >>>>>> Super great idea! >>>>>> Gary, K5AMH >>>>>> >>>>>> >>>>>>> On March 10, 2021 12:22:18 AM Mark Brantana via BVARC <bvarc@bvarc.org> >>>>>>> wrote: >>>>>>> >>>>>>> OK, what is an FSD? It is a Field Strength Drone. It’s an idea I am >>>>>>> sure others have had, and I don’t expect to get around to designing or >>>>>>> patenting such a thing. But inventions are often just the merging of >>>>>>> new technologies, and this is not much different. I don’t see any >>>>>>> YouTubes about this or any other reference, so here’s the idea: >>>>>>> >>>>>>> With all the capabilities of little drones I wonder if anyone has >>>>>>> designed one which can carry a field strength meter and fly a grid >>>>>>> around an antenna to evaluate antenna performance. The guts of my >>>>>>> little Radio Shack FSM would have weighed way less than an ounce. >>>>>>> >>>>>>> Ideally, the field strength meter could communicate to the base through >>>>>>> the drone transmitter, reducing weight. Software at the base could link >>>>>>> the drone 3D location data with the FS reading. The drone would have to >>>>>>> wait at test locations for the operator to transmit, and ideally would >>>>>>> move to the next location. Finally, the software might be able to link >>>>>>> with existing simulation software for comparison with theory and allow >>>>>>> for simulation model improvement. This looks like it would take a small >>>>>>> team to develop. >>>>>>> >>>>>>> This sounds like it would have many uses besides antenna evaluation, >>>>>>> like RFI evaluation. >>>>>>> >>>>>>> What about it? Has anyone done this? >>>>>>> >>>>>>> Mark >>>>>>> N5PRD >>>>>>> ________________________________________________ >>>>>>> Brazos Valley Amateur Radio Club >>>>>>> >>>>>>> BVARC mailing list >>>>>>> BVARC@bvarc.org >>>>>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >>>>>>> Publicly available archives are available here: >>>>>>> https://www.mail-archive.com/bvarc@bvarc.org/ >>>>>> >>>>>> >>>>>> ________________________________________________ >>>>>> Brazos Valley Amateur Radio Club >>>>>> >>>>>> BVARC mailing list >>>>>> BVARC@bvarc.org >>>>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >>>>>> Publicly available archives are available here: >>>>>> https://www.mail-archive.com/bvarc@bvarc.org/ >>>>> ________________________________________________ >>>>> Brazos Valley Amateur Radio Club >>>>> >>>>> BVARC mailing list >>>>> BVARC@bvarc.org >>>>> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >>>>> Publicly available archives are available here: >>>>> https://www.mail-archive.com/bvarc@bvarc.org/ >>> >>> > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/
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