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I suspect that teflon dielectric is used throughout the Gainmaster but when I try my hand at home-building one I want to use RG-213 for it's power handling characteristics, but the capacitance is a little higher than RG-303 and RG-393 so it might not tune correctly, depending on the importance of that spec on the lower half of the main element, not the matching sections.
I definitely have a couple questions about the reason for the 16 turns and how interesting it is that it is close to an electrical half wave, depending on the velocity factor.

[QUOTE="Needle Bender, post: 350526, member: 13339"] I suspect that teflon dielectric is used throughout the Gainmaster but when I try my hand at home-building one I want to use RG-213 for it's power handling characteristics, but the capacitance is a little higher than RG-303 and RG-393 so it might not tune correctly, depending on the importance of that spec on the lower half of the main element, not the matching sections. I definitely have a couple questions about the reason for the 16 turns and how interesting it is that it is close to an electrical half wave, depending on the velocity factor. [/QUOTE]

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