On 4/7/2021 3:01 PM, David Eckhardt wrote:
I have used RG-142 for the purpose. It is high-power Teflon center
insulated with double shield. All conductors are silver plated. It will
take a kW at HF.
The shortcoming of all of these coaxes in this application is bend
radius, which when wound on 2.4-in o.d. toroids is significantly less
than they are specified. With a lot of consultation with other engineers
whose judgement I trust, I settled on RG400, because the center is
stranded silver on copper, making it less likely to migrate with the
tight wind.
73, Jim K9YC
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