Unless you have a cell tower right in your driveway (near-field), it's highly unlikely that's the cause. More likely would be a local cell-phone (yours) inside the car causing this when it responds to control channel messages or you are on a call.
The most energy a cell tower puts out is somewhere below a few watts in total, and due to the Inverse Square law: The radiation Intensity is inversely proportional to the square of the distance. A WiFi access point close to your car is going to expose it to more RF than a cell tower a block away, but in either case the energy at the car is super low. It would take an exceptionally "perfect storm" of bad engineering in the EV to have this be a cause. More likely it's interfering with itself. The amount of electrical and RF noise in an EV is astounding, which is why even on carefully engineered production EVs, AM radio doesn't work so well, and why it's being removed from most of them. There are myriad ways your home-built EV could be doing this, but impossible to determine without a thorough analysis. Though obvious things to consider; Did you use shielded HV cables? Did you take steps to minimize wire length, especially from controller to motor? Are these routed as close together as practical? Are they shielded? What about the battery wiring? Did you design the layout to minimize battery loop inductance? Is the motor and controller grounded to the body with a heavy flat braided jumper? On Fri, Jun 23, 2023 at 10:30 AM David Heacock via EV <ev@lists.evdl.org> wrote: > I have converted a 1985 Avanti to an EV and with the current LFP battery > pack I have a reasonable range of about 100 miles. Everything works well > with different components from different sources. However, one problem I > have yet to resolve is what appears to be interference from Cell towers > which basically seems to cut out the throttle and at slow speeds can > actually cause the vehicle to shut off and then come back on as the car > moves relative to the cell tower position. I have contacted a number of > people and suppliers about the issue and tried a number of things to > provide RF protection but have not been able to solve the problem. Has > anyone ever experienced this issue and a possible solution? > David Heacock > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20230623/c58f993d/attachment.htm > > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20230623/d9a2723e/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
