This might also stabilize the drone with a lower center of gravity. Sent from my iPhone
> On Mar 10, 2021, at 10:57 AM, Mark Brantana <n5...@yahoo.com> wrote: > > 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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