Re: [RFI] Thermostat/HVAC Susceptibility

[Jim Brown <jim@audiosystemsgroup.com>]

On 1/7/2026 1:03 PM, Dan K2YWE wrote:
> That's not surprising. My installer told me that Ecobee. I think, provided
> a ferrite bead with their thermostat.
A ferrite bead MAY satisfy EMC requirements at VHF/UHF, but is next to 
useless at HF and below.
Multiple turns must be wound around a Fair-Rite #31 core, and they must 
be wound in sequence around the core, to be effective at HF and below.
73, Jim K9YC

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