RFI at 2M is a good candidate for #43 or #31 clamp-ons without a second
turn on wiring connected to the source. You may need more than one.
Multiple turns through #31 will be required for suppression at HF.
73, Jim K9YC
On 11/17/2021 6:05 AM, nlsa@nlsa.com wrote:
Dear friends,
I am seeing RFI on 2m from the cathodic protection circuit in our geothermal
heating system. The protective circuit's on-board SMPS generates a large
broad emission around 150 MHz, verified with a spectrum analyzer and
sniffer. Before I dive in with the usual filters and toroids, does anyone
on the list have experience and suggestions?
Thank you,
Michael Owen
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