[RFI] Tesla Wall RFI

[Tom Thompson]

Let me say this more clearly. -95 dBm on my loop corresponds to -66 dBm on my dipole which is S9 + 7 which is substantial. The upside is, in this case, the carrier is in the middle of the band and will probably just appear as someone turning up.

> On Apr 29, 2026, at 6:38 AM, Tom Thompson <w0ivj at tomthompson.com> wrote:
> 
> You are correct, Dave. I did the math in the wrong direction. However, I have since made some measurements of my loop compared to a dipole, and with that correction the signal was S9+ 7 dB.
> 
>> On Apr 28, 2026, at 9:19 PM, Steve Dyer W1SRD via RFI <rfi at contesting.com> wrote:
>> 
>> The Power Wall and car are different animals.
>> 
>>> On 4/27/2026 2:37 PM, Jim Brown via RFI wrote:
>>>>> On 4/27/2026 1:14 PM, David Eckhardt via RFI wrote:
>>>>> There have been a number of reports of the Tesla chargers being quite a
>>>>> source of RFI on other sites as well as this one.
>>> 
>>> When I bought my Model 3 six years ago, I probed around with my Kenwood TH-F6A talkie it while charging from a 120V 15A outlet and did not detect any noise. I subsequently added a 30A 240V outlet, and now charge from that. I should repeat the probe with that higher voltage and current.
>>> 
>>> About 4 years ago, I found a couple of youtube videos from a ham in W5 who detailed installation of both VHF and HF rigs in his Model 3. He reported hearing moderate noise only when regenerative braking. Regenerative braking is a significant element of the mileage efficiency of all forms of EVs, beginning with those like the Prius, that also run on petrol.
>>> 
>>> 73, Jim K9YC
>>> 
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